Merge commit 'upstream/2.0.0'

190 files changed, 2323 insertions, 5649 deletions

diff --git a/engine/SCons/Action.py b/engine/SCons/Action.py
index 3e766d9..7cad8a5 100644
--- a/engine/SCons/Action.py
+++ b/engine/SCons/Action.py
@@ -97,13 +97,15 @@ way for wrapping up the functions.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Action.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Action.py 5023 2010/06/14 22:05:46 scons"
+
+import SCons.compat
 
-import cPickle
 import dis
 import os
+# compat layer imports "cPickle" for us if it's available.
+import pickle
 import re
-import string
 import sys
 import subprocess
 
@@ -117,7 +119,7 @@ import SCons.Subst
 is_String = SCons.Util.is_String
 is_List = SCons.Util.is_List
 
-class _null:
+class _null(object):
     pass
 
 print_actions = 1
@@ -153,7 +155,7 @@ else:
             else:
                 result.append(c)
                 i = i+1
-        return string.join(result, '')
+        return ''.join(result)
 
 strip_quotes = re.compile('^[\'"](.*)[\'"]$')
 
@@ -208,8 +210,8 @@ def _object_contents(obj):
                 except AttributeError:
                     # Should be a pickable Python object.
                     try:
-                        return cPickle.dumps(obj)
-                    except (cPickle.PicklingError, TypeError):
+                        return pickle.dumps(obj)
+                    except (pickle.PicklingError, TypeError):
                         # This is weird, but it seems that nested classes
                         # are unpickable. The Python docs say it should
                         # always be a PicklingError, but some Python
@@ -249,19 +251,19 @@ def _code_contents(code):
     # Note that we also always ignore the first entry of co_consts
     # which contains the function doc string. We assume that the
     # function does not access its doc string.
-    contents.append(',(' + string.join(map(_object_contents,code.co_consts[1:]),',') + ')')
+    contents.append(',(' + ','.join(map(_object_contents,code.co_consts[1:])) + ')')
 
     # The code contents depends on the variable names used to
     # accessed global variable, as changing the variable name changes
     # the variable actually accessed and therefore changes the
     # function result.
-    contents.append(',(' + string.join(map(_object_contents,code.co_names),',') + ')')
+    contents.append(',(' + ','.join(map(_object_contents,code.co_names)) + ')')
 
 
     # The code contents depends on its actual code!!!
     contents.append(',(' + str(remove_set_lineno_codes(code.co_code)) + ')')
 
-    return string.join(contents, '')
+    return ''.join(contents)
 
 
 def _function_contents(func):
@@ -271,7 +273,7 @@ def _function_contents(func):
 
     # The function contents depends on the value of defaults arguments
     if func.func_defaults:
-        contents.append(',(' + string.join(map(_object_contents,func.func_defaults),',') + ')')
+        contents.append(',(' + ','.join(map(_object_contents,func.func_defaults)) + ')')
     else:
         contents.append(',()')
 
@@ -284,12 +286,12 @@ def _function_contents(func):
 
     #xxx = [_object_contents(x.cell_contents) for x in closure]
     try:
-        xxx = map(lambda x: _object_contents(x.cell_contents), closure)
+        xxx = [_object_contents(x.cell_contents) for x in closure]
     except AttributeError:
         xxx = []
-    contents.append(',(' + string.join(xxx, ',') + ')')
+    contents.append(',(' + ','.join(xxx) + ')')
 
-    return string.join(contents, '')
+    return ''.join(contents)
 
 
 def _actionAppend(act1, act2):
@@ -299,7 +301,7 @@ def _actionAppend(act1, act2):
     a1 = Action(act1)
     a2 = Action(act2)
     if a1 is None or a2 is None:
-        raise TypeError, "Cannot append %s to %s" % (type(act1), type(act2))
+        raise TypeError("Cannot append %s to %s" % (type(act1), type(act2)))
     if isinstance(a1, ListAction):
         if isinstance(a2, ListAction):
             return ListAction(a1.list + a2.list)
@@ -353,8 +355,7 @@ def _do_create_action(act, kw):
         return act
 
     if is_List(act):
-        #TODO(1.5) return CommandAction(act, **kw)
-        return apply(CommandAction, (act,), kw)
+        return CommandAction(act, **kw)
 
     if callable(act):
         try:
@@ -378,10 +379,9 @@ def _do_create_action(act, kw):
             # like a function or a CommandGenerator in that variable
             # instead of a string.
             return LazyAction(var, kw)
-        commands = string.split(str(act), '\n')
+        commands = str(act).split('\n')
         if len(commands) == 1:
-            #TODO(1.5) return CommandAction(commands[0], **kw)
-            return apply(CommandAction, (commands[0],), kw)
+            return CommandAction(commands[0], **kw)
         # The list of string commands may include a LazyAction, so we
         # reprocess them via _do_create_list_action.
         return _do_create_list_action(commands, kw)
@@ -409,7 +409,7 @@ def Action(act, *args, **kw):
         return _do_create_list_action(act, kw)
     return _do_create_action(act, kw)
 
-class ActionBase:
+class ActionBase(object):
     """Base class for all types of action objects that can be held by
     other objects (Builders, Executors, etc.)  This provides the
     common methods for manipulating and combining those actions."""
@@ -434,7 +434,7 @@ class ActionBase:
         if is_String(vl): vl = (vl,)
         for v in vl:
             result.append(env.subst('${'+v+'}'))
-        return string.join(result, '')
+        return ''.join(result)
 
     def __add__(self, other):
         return _actionAppend(self, other)
@@ -450,7 +450,7 @@ class ActionBase:
         # and CommandGeneratorAction will use this env
         # when it calls its _generate method.
         self.presub_env = env
-        lines = string.split(str(self), '\n')
+        lines = str(self).split('\n')
         self.presub_env = None      # don't need this any more
         return lines
 
@@ -497,7 +497,7 @@ class _ActionAction(ActionBase):
             SCons.Util.AddMethod(self, batch_key, 'batch_key')
 
     def print_cmd_line(self, s, target, source, env):
-        sys.stdout.write(s + "\n")
+        sys.stdout.write(s + u"\n")
 
     def __call__(self, target, source, env,
                                exitstatfunc=_null,
@@ -534,9 +534,9 @@ class _ActionAction(ActionBase):
             if executor:
                 target = executor.get_all_targets()
                 source = executor.get_all_sources()
-            t = string.join(map(str, target), ' and ')
-            l = string.join(self.presub_lines(env), '\n  ')
-            out = "Building %s with action:\n  %s\n" % (t, l)
+            t = ' and '.join(map(str, target))
+            l = '\n  '.join(self.presub_lines(env))
+            out = u"Building %s with action:\n  %s\n" % (t, l)
             sys.stdout.write(out)
         cmd = None
         if show and self.strfunction:
@@ -590,7 +590,7 @@ def _string_from_cmd_list(cmd_list):
         if ' ' in arg or '\t' in arg:
             arg = '"' + arg + '"'
         cl.append(arg)
-    return string.join(cl)
+    return ' '.join(cl)
 
 # A fiddlin' little function that has an 'import SCons.Environment' which
 # can't be moved to the top level without creating an import loop.  Since
@@ -617,7 +617,7 @@ def get_default_ENV(env):
 # it in the long run as more and more places use subprocess, but I'm sure
 # it'll have to be tweaked to get the full desired functionality.
 # one special arg (so far?), 'error', to tell what to do with exceptions.
-def _subproc(env, cmd, error = 'ignore', **kw):
+def _subproc(scons_env, cmd, error = 'ignore', **kw):
     """Do common setup for a subprocess.Popen() call"""
     # allow std{in,out,err} to be "'devnull'"
     io = kw.get('stdin')
@@ -632,7 +632,7 @@ def _subproc(env, cmd, error = 'ignore', **kw):
 
     # Figure out what shell environment to use
     ENV = kw.get('env', None)
-    if ENV is None: ENV = get_default_ENV(env)
+    if ENV is None: ENV = get_default_ENV(scons_env)
 
     # Ensure that the ENV values are all strings:
     new_env = {}
@@ -642,7 +642,7 @@ def _subproc(env, cmd, error = 'ignore', **kw):
             # because that's a pretty common list-like value to stick
             # in an environment variable:
             value = SCons.Util.flatten_sequence(value)
-            new_env[key] = string.join(map(str, value), os.pathsep)
+            new_env[key] = os.pathsep.join(map(str, value))
         else:
             # It's either a string or something else.  If it's a string,
             # we still want to call str() because it might be a *Unicode*
@@ -655,16 +655,16 @@ def _subproc(env, cmd, error = 'ignore', **kw):
 
     try:
         #FUTURE return subprocess.Popen(cmd, **kw)
-        return apply(subprocess.Popen, (cmd,), kw)
+        return subprocess.Popen(cmd, **kw)
     except EnvironmentError, e:
         if error == 'raise': raise
         # return a dummy Popen instance that only returns error
-        class dummyPopen:
+        class dummyPopen(object):
             def __init__(self, e): self.exception = e
             def communicate(self): return ('','')
             def wait(self): return -self.exception.errno
             stdin = None
-            class f:
+            class f(object):
                 def read(self): return ''
                 def readline(self): return ''
             stdout = stderr = f()
@@ -684,17 +684,16 @@ class CommandAction(_ActionAction):
         # variables.
         if __debug__: logInstanceCreation(self, 'Action.CommandAction')
 
-        #TODO(1.5) _ActionAction.__init__(self, **kw)
-        apply(_ActionAction.__init__, (self,), kw)
+        _ActionAction.__init__(self, **kw)
         if is_List(cmd):
-            if filter(is_List, cmd):
-                raise TypeError, "CommandAction should be given only " \
-                      "a single command"
+            if list(filter(is_List, cmd)):
+                raise TypeError("CommandAction should be given only " \
+                      "a single command")
         self.cmd_list = cmd
 
     def __str__(self):
         if is_List(self.cmd_list):
-            return string.join(map(str, self.cmd_list), ' ')
+            return ' '.join(map(str, self.cmd_list))
         return str(self.cmd_list)
 
     def process(self, target, source, env, executor=None):
@@ -704,7 +703,7 @@ class CommandAction(_ActionAction):
             result = env.subst_list(self.cmd_list, 0, target, source)
         silent = None
         ignore = None
-        while 1:
+        while True:
             try: c = result[0][0][0]
             except IndexError: c = None
             if c == '@': silent = 1
@@ -771,7 +770,7 @@ class CommandAction(_ActionAction):
                     # path list, because that's a pretty common list-like
                     # value to stick in an environment variable:
                     value = flatten_sequence(value)
-                    ENV[key] = string.join(map(str, value), os.pathsep)
+                    ENV[key] = os.pathsep.join(map(str, value))
                 else:
                     # If it isn't a string or a list, then we just coerce
                     # it to a string, which is the proper way to handle
@@ -782,7 +781,7 @@ class CommandAction(_ActionAction):
         if executor:
             target = executor.get_all_targets()
             source = executor.get_all_sources()
-        cmd_list, ignore, silent = self.process(target, map(rfile, source), env, executor)
+        cmd_list, ignore, silent = self.process(target, list(map(rfile, source)), env, executor)
 
         # Use len() to filter out any "command" that's zero-length.
         for cmd_line in filter(len, cmd_list):
@@ -806,7 +805,7 @@ class CommandAction(_ActionAction):
         from SCons.Subst import SUBST_SIG
         cmd = self.cmd_list
         if is_List(cmd):
-            cmd = string.join(map(str, cmd))
+            cmd = ' '.join(map(str, cmd))
         else:
             cmd = str(cmd)
         if executor:
@@ -859,8 +858,7 @@ class CommandGeneratorAction(ActionBase):
                              source=source,
                              env=env,
                              for_signature=for_signature)
-        #TODO(1.5) gen_cmd = Action(ret, **self.gen_kw)
-        gen_cmd = apply(Action, (ret,), self.gen_kw)
+        gen_cmd = Action(ret, **self.gen_kw)
         if not gen_cmd:
             raise SCons.Errors.UserError("Object returned from command generator: %s cannot be used to create an Action." % repr(ret))
         return gen_cmd
@@ -885,7 +883,9 @@ class CommandGeneratorAction(ActionBase):
                  show=_null, execute=_null, chdir=_null, executor=None):
         act = self._generate(target, source, env, 0, executor)
         if act is None:
-            raise UserError("While building `%s': Cannot deduce file extension from source files: %s" % (repr(map(str, target)), repr(map(str, source))))
+            raise UserError("While building `%s': "
+                            "Cannot deduce file extension from source files: %s"
+                % (repr(list(map(str, target))), repr(list(map(str, source)))))
         return act(target, source, env, exitstatfunc, presub,
                    show, execute, chdir, executor)
 
@@ -930,7 +930,7 @@ class LazyAction(CommandGeneratorAction, CommandAction):
     def __init__(self, var, kw):
         if __debug__: logInstanceCreation(self, 'Action.LazyAction')
         #FUTURE CommandAction.__init__(self, '${'+var+'}', **kw)
-        apply(CommandAction.__init__, (self, '${'+var+'}'), kw)
+        CommandAction.__init__(self, '${'+var+'}', **kw)
         self.var = SCons.Util.to_String(var)
         self.gen_kw = kw
 
@@ -945,8 +945,7 @@ class LazyAction(CommandGeneratorAction, CommandAction):
             c = env.get(self.var, '')
         else:
             c = ''
-        #TODO(1.5) gen_cmd = Action(c, **self.gen_kw)
-        gen_cmd = apply(Action, (c,), self.gen_kw)
+        gen_cmd = Action(c, **self.gen_kw)
         if not gen_cmd:
             raise SCons.Errors.UserError("$%s value %s cannot be used to create an Action." % (self.var, repr(c)))
         return gen_cmd
@@ -955,10 +954,8 @@ class LazyAction(CommandGeneratorAction, CommandAction):
         return self._generate_cache(env)
 
     def __call__(self, target, source, env, *args, **kw):
-        args = (self, target, source, env) + args
         c = self.get_parent_class(env)
-        #TODO(1.5) return c.__call__(*args, **kw)
-        return apply(c.__call__, args, kw)
+        return c.__call__(self, target, source, env, *args, **kw)
 
     def get_presig(self, target, source, env):
         c = self.get_parent_class(env)
@@ -986,8 +983,7 @@ class FunctionAction(_ActionAction):
                 # This is weird, just do the best we can.
                 self.funccontents = _object_contents(execfunction)
 
-        #TODO(1.5) _ActionAction.__init__(self, **kw)
-        apply(_ActionAction.__init__, (self,), kw)
+        _ActionAction.__init__(self, **kw)
 
     def function_name(self):
         try:
@@ -1018,7 +1014,7 @@ class FunctionAction(_ActionAction):
                 else:
                     s = str_for_display()
                 return s
-            return '[' + string.join(map(quote, a), ", ") + ']'
+            return '[' + ", ".join(map(quote, a)) + ']'
         try:
             strfunc = self.execfunction.strfunction
         except AttributeError:
@@ -1045,7 +1041,7 @@ class FunctionAction(_ActionAction):
             if executor:
                 target = executor.get_all_targets()
                 source = executor.get_all_sources()
-            rsources = map(rfile, source)
+            rsources = list(map(rfile, source))
             try:
                 result = self.execfunction(target=target, source=rsources, env=env)
             except KeyboardInterrupt, e:
@@ -1095,40 +1091,34 @@ class FunctionAction(_ActionAction):
 
 class ListAction(ActionBase):
     """Class for lists of other actions."""
-    def __init__(self, list):
+    def __init__(self, actionlist):
         if __debug__: logInstanceCreation(self, 'Action.ListAction')
         def list_of_actions(x):
             if isinstance(x, ActionBase):
                 return x
             return Action(x)
-        self.list = map(list_of_actions, list)
+        self.list = list(map(list_of_actions, actionlist))
         # our children will have had any varlist
         # applied; we don't need to do it again
         self.varlist = ()
         self.targets = '$TARGETS'
 
     def genstring(self, target, source, env):
-        return string.join(map(lambda a, t=target, s=source, e=env:
-                                  a.genstring(t, s, e),
-                               self.list),
-                           '\n')
+        return '\n'.join([a.genstring(target, source, env) for a in self.list])
 
     def __str__(self):
-        return string.join(map(str, self.list), '\n')
+        return '\n'.join(map(str, self.list))
 
     def presub_lines(self, env):
         return SCons.Util.flatten_sequence(
-            map(lambda a, env=env: a.presub_lines(env), self.list))
+            [a.presub_lines(env) for a in self.list])
 
     def get_presig(self, target, source, env):
         """Return the signature contents of this action list.
 
         Simple concatenation of the signatures of the elements.
         """
-        return string.join(map(lambda x, t=target, s=source, e=env:
-                                      x.get_contents(t, s, e),
-                               self.list),
-                           "")
+        return "".join([x.get_contents(target, source, env) for x in self.list])
 
     def __call__(self, target, source, env, exitstatfunc=_null, presub=_null,
                  show=_null, execute=_null, chdir=_null, executor=None):
@@ -1153,9 +1143,9 @@ class ListAction(ActionBase):
         for act in self.list:
             for var in act.get_varlist(target, source, env, executor):
                 result[var] = True
-        return result.keys()
+        return list(result.keys())
 
-class ActionCaller:
+class ActionCaller(object):
     """A class for delaying calling an Action function with specific
     (positional and keyword) arguments until the Action is actually
     executed.
@@ -1204,9 +1194,7 @@ class ActionCaller:
         return self.parent.convert(s)
 
     def subst_args(self, target, source, env):
-        return map(lambda x, self=self, t=target, s=source, e=env:
-                          self.subst(x, t, s, e),
-                   self.args)
+        return [self.subst(x, target, source, env) for x in self.args]
 
     def subst_kw(self, target, source, env):
         kw = {}
@@ -1217,20 +1205,17 @@ class ActionCaller:
     def __call__(self, target, source, env, executor=None):
         args = self.subst_args(target, source, env)
         kw = self.subst_kw(target, source, env)
-        #TODO(1.5) return self.parent.actfunc(*args, **kw)
-        return apply(self.parent.actfunc, args, kw)
+        return self.parent.actfunc(*args, **kw)
 
     def strfunction(self, target, source, env):
         args = self.subst_args(target, source, env)
         kw = self.subst_kw(target, source, env)
-        #TODO(1.5) return self.parent.strfunc(*args, **kw)
-        return apply(self.parent.strfunc, args, kw)
+        return self.parent.strfunc(*args, **kw)
 
     def __str__(self):
-        #TODO(1.5) return self.parent.strfunc(*self.args, **self.kw)
-        return apply(self.parent.strfunc, self.args, self.kw)
+        return self.parent.strfunc(*self.args, **self.kw)
 
-class ActionFactory:
+class ActionFactory(object):
     """A factory class that will wrap up an arbitrary function
     as an SCons-executable Action object.
 
diff --git a/engine/SCons/Builder.py b/engine/SCons/Builder.py
index 7a9a028..3b4f2e8 100644
--- a/engine/SCons/Builder.py
+++ b/engine/SCons/Builder.py
@@ -96,12 +96,10 @@ There are the following methods for internal use within this module:
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Builder.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Builder.py 5023 2010/06/14 22:05:46 scons"
 
-import UserDict
-import UserList
+import collections
 
 import SCons.Action
 from SCons.Debug import logInstanceCreation
@@ -113,17 +111,16 @@ import SCons.Node.FS
 import SCons.Util
 import SCons.Warnings
 
-class _Null:
+class _Null(object):
     pass
 
 _null = _Null
 
 def match_splitext(path, suffixes = []):
     if suffixes:
-        matchsuf = filter(lambda S,path=path: path[-len(S):] == S,
-                          suffixes)
+        matchsuf = [S for S in suffixes if path[-len(S):] == S]
         if matchsuf:
-            suf = max(map(None, map(len, matchsuf), matchsuf))[1]
+            suf = max([(len(_f),_f) for _f in matchsuf])[1]
             return [path[:-len(suf)], path[-len(suf):]]
     return SCons.Util.splitext(path)
 
@@ -139,7 +136,7 @@ class DictCmdGenerator(SCons.Util.Selector):
         self.source_ext_match = source_ext_match
 
     def src_suffixes(self):
-        return self.keys()
+        return list(self.keys())
 
     def add_action(self, suffix, action):
         """Add a suffix-action pair to the mapping.
@@ -156,22 +153,25 @@ class DictCmdGenerator(SCons.Util.Selector):
             for src in map(str, source):
                 my_ext = match_splitext(src, suffixes)[1]
                 if ext and my_ext != ext:
-                    raise UserError("While building `%s' from `%s': Cannot build multiple sources with different extensions: %s, %s" % (repr(map(str, target)), src, ext, my_ext))
+                    raise UserError("While building `%s' from `%s': Cannot build multiple sources with different extensions: %s, %s"
+                             % (repr(list(map(str, target))), src, ext, my_ext))
                 ext = my_ext
         else:
             ext = match_splitext(str(source[0]), self.src_suffixes())[1]
 
         if not ext:
             #return ext
-            raise UserError("While building `%s': Cannot deduce file extension from source files: %s" % (repr(map(str, target)), repr(map(str, source))))
+            raise UserError("While building `%s': "
+                            "Cannot deduce file extension from source files: %s"
+                 % (repr(list(map(str, target))), repr(list(map(str, source)))))
 
         try:
             ret = SCons.Util.Selector.__call__(self, env, source, ext)
         except KeyError, e:
-            raise UserError("Ambiguous suffixes after environment substitution: %s == %s == %s" % (e[0], e[1], e[2]))
+            raise UserError("Ambiguous suffixes after environment substitution: %s == %s == %s" % (e.args[0], e.args[1], e.args[2]))
         if ret is None:
             raise UserError("While building `%s' from `%s': Don't know how to build from a source file with suffix `%s'.  Expected a suffix in this list: %s." % \
-                            (repr(map(str, target)), repr(map(str, source)), ext, repr(self.keys())))
+                            (repr(list(map(str, target))), repr(list(map(str, source))), ext, repr(list(self.keys()))))
         return ret
 
 class CallableSelector(SCons.Util.Selector):
@@ -197,7 +197,7 @@ class DictEmitter(SCons.Util.Selector):
             target, source = emitter(target, source, env)
         return (target, source)
 
-class ListEmitter(UserList.UserList):
+class ListEmitter(collections.UserList):
     """A callable list of emitters that calls each in sequence,
     returning the result.
     """
@@ -215,7 +215,7 @@ misleading_keywords = {
     'sources'   : 'source',
 }
 
-class OverrideWarner(UserDict.UserDict):
+class OverrideWarner(collections.UserDict):
     """A class for warning about keyword arguments that we use as
     overrides in a Builder call.
 
@@ -224,14 +224,14 @@ class OverrideWarner(UserDict.UserDict):
     warnings once, no matter how many Builders are invoked.
     """
     def __init__(self, dict):
-        UserDict.UserDict.__init__(self, dict)
+        collections.UserDict.__init__(self, dict)
         if __debug__: logInstanceCreation(self, 'Builder.OverrideWarner')
         self.already_warned = None
     def warn(self):
         if self.already_warned:
             return
         for k in self.keys():
-            if misleading_keywords.has_key(k):
+            if k in misleading_keywords:
                 alt = misleading_keywords[k]
                 msg = "Did you mean to use `%s' instead of `%s'?" % (alt, k)
                 SCons.Warnings.warn(SCons.Warnings.MisleadingKeywordsWarning, msg)
@@ -240,14 +240,14 @@ class OverrideWarner(UserDict.UserDict):
 def Builder(**kw):
     """A factory for builder objects."""
     composite = None
-    if kw.has_key('generator'):
-        if kw.has_key('action'):
-            raise UserError, "You must not specify both an action and a generator."
+    if 'generator' in kw:
+        if 'action' in kw:
+            raise UserError("You must not specify both an action and a generator.")
         kw['action'] = SCons.Action.CommandGeneratorAction(kw['generator'], {})
         del kw['generator']
-    elif kw.has_key('action'):
+    elif 'action' in kw:
         source_ext_match = kw.get('source_ext_match', 1)
-        if kw.has_key('source_ext_match'):
+        if 'source_ext_match' in kw:
             del kw['source_ext_match']
         if SCons.Util.is_Dict(kw['action']):
             composite = DictCmdGenerator(kw['action'], source_ext_match)
@@ -256,7 +256,7 @@ def Builder(**kw):
         else:
             kw['action'] = SCons.Action.Action(kw['action'])
 
-    if kw.has_key('emitter'):
+    if 'emitter' in kw:
         emitter = kw['emitter']
         if SCons.Util.is_String(emitter):
             # This allows users to pass in an Environment
@@ -265,14 +265,14 @@ def Builder(**kw):
             # a callable to use as the actual emitter.
             var = SCons.Util.get_environment_var(emitter)
             if not var:
-                raise UserError, "Supplied emitter '%s' does not appear to refer to an Environment variable" % emitter
+                raise UserError("Supplied emitter '%s' does not appear to refer to an Environment variable" % emitter)
             kw['emitter'] = EmitterProxy(var)
         elif SCons.Util.is_Dict(emitter):
             kw['emitter'] = DictEmitter(emitter)
         elif SCons.Util.is_List(emitter):
             kw['emitter'] = ListEmitter(emitter)
 
-    result = apply(BuilderBase, (), kw)
+    result = BuilderBase(**kw)
 
     if not composite is None:
         result = CompositeBuilder(result, composite)
@@ -289,7 +289,7 @@ def _node_errors(builder, env, tlist, slist):
     # were specified.
     for t in tlist:
         if t.side_effect:
-            raise UserError, "Multiple ways to build the same target were specified for: %s" % t
+            raise UserError("Multiple ways to build the same target were specified for: %s" % t)
         if t.has_explicit_builder():
             if not t.env is None and not t.env is env:
                 action = t.builder.action
@@ -301,24 +301,24 @@ def _node_errors(builder, env, tlist, slist):
                     SCons.Warnings.warn(SCons.Warnings.DuplicateEnvironmentWarning, msg)
                 else:
                     msg = "Two environments with different actions were specified for the same target: %s" % t
-                    raise UserError, msg
+                    raise UserError(msg)
             if builder.multi:
                 if t.builder != builder:
                     msg = "Two different builders (%s and %s) were specified for the same target: %s" % (t.builder.get_name(env), builder.get_name(env), t)
-                    raise UserError, msg
+                    raise UserError(msg)
                 # TODO(batch):  list constructed each time!
                 if t.get_executor().get_all_targets() != tlist:
-                    msg = "Two different target lists have a target in common: %s  (from %s and from %s)" % (t, map(str, t.get_executor().get_all_targets()), map(str, tlist))
-                    raise UserError, msg
+                    msg = "Two different target lists have a target in common: %s  (from %s and from %s)" % (t, list(map(str, t.get_executor().get_all_targets())), list(map(str, tlist)))
+                    raise UserError(msg)
             elif t.sources != slist:
-                msg = "Multiple ways to build the same target were specified for: %s  (from %s and from %s)" % (t, map(str, t.sources), map(str, slist))
-                raise UserError, msg
+                msg = "Multiple ways to build the same target were specified for: %s  (from %s and from %s)" % (t, list(map(str, t.sources)), list(map(str, slist)))
+                raise UserError(msg)
 
     if builder.single_source:
         if len(slist) > 1:
-            raise UserError, "More than one source given for single-source builder: targets=%s sources=%s" % (map(str,tlist), map(str,slist))
+            raise UserError("More than one source given for single-source builder: targets=%s sources=%s" % (list(map(str,tlist)), list(map(str,slist))))
 
-class EmitterProxy:
+class EmitterProxy(object):
     """This is a callable class that can act as a
     Builder emitter.  It holds on to a string that
     is a key into an Environment dictionary, and will
@@ -334,7 +334,7 @@ class EmitterProxy:
         # Recursively substitute the variable.
         # We can't use env.subst() because it deals only
         # in strings.  Maybe we should change that?
-        while SCons.Util.is_String(emitter) and env.has_key(emitter):
+        while SCons.Util.is_String(emitter) and emitter in env:
             emitter = env[emitter]
         if callable(emitter):
             target, source = emitter(target, source, env)
@@ -348,7 +348,7 @@ class EmitterProxy:
     def __cmp__(self, other):
         return cmp(self.var, other.var)
 
-class BuilderBase:
+class BuilderBase(object):
     """Base class for Builders, objects that create output
     nodes (files) from input nodes (files).
     """
@@ -387,14 +387,14 @@ class BuilderBase:
             suffix = CallableSelector(suffix)
         self.env = env
         self.single_source = single_source
-        if overrides.has_key('overrides'):
-            SCons.Warnings.warn(SCons.Warnings.DeprecatedWarning,
+        if 'overrides' in overrides:
+            SCons.Warnings.warn(SCons.Warnings.DeprecatedBuilderKeywordsWarning,
                 "The \"overrides\" keyword to Builder() creation has been deprecated;\n" +\
                 "\tspecify the items as keyword arguments to the Builder() call instead.")
             overrides.update(overrides['overrides'])
             del overrides['overrides']
-        if overrides.has_key('scanner'):
-            SCons.Warnings.warn(SCons.Warnings.DeprecatedWarning,
+        if 'scanner' in overrides:
+            SCons.Warnings.warn(SCons.Warnings.DeprecatedBuilderKeywordsWarning,
                                 "The \"scanner\" keyword to Builder() creation has been deprecated;\n"
                                 "\tuse: source_scanner or target_scanner as appropriate.")
             del overrides['scanner']
@@ -427,7 +427,7 @@ class BuilderBase:
         self.src_builder = src_builder
 
     def __nonzero__(self):
-        raise InternalError, "Do not test for the Node.builder attribute directly; use Node.has_builder() instead"
+        raise InternalError("Do not test for the Node.builder attribute directly; use Node.has_builder() instead")
 
     def get_name(self, env):
         """Attempts to get the name of the Builder.
@@ -438,8 +438,8 @@ class BuilderBase:
         name (if there is one) or the name of the class (by default)."""
 
         try:
-            index = env['BUILDERS'].values().index(self)
-            return env['BUILDERS'].keys()[index]
+            index = list(env['BUILDERS'].values()).index(self)
+            return list(env['BUILDERS'].keys())[index]
         except (AttributeError, KeyError, TypeError, ValueError):
             try:
                 return self.name
@@ -493,7 +493,7 @@ class BuilderBase:
             except IndexError:
                 tlist = []
             else:
-                splitext = lambda S,self=self,env=env: self.splitext(S,env)
+                splitext = lambda S: self.splitext(S,env)
                 tlist = [ t_from_s(pre, suf, splitext) ]
         else:
             target = self._adjustixes(target, pre, suf, self.ensure_suffix)
@@ -573,8 +573,8 @@ class BuilderBase:
         if executor is None:
             if not self.action:
                 fmt = "Builder %s must have an action to build %s."
-                raise UserError, fmt % (self.get_name(env or self.env),
-                                        map(str,tlist))
+                raise UserError(fmt % (self.get_name(env or self.env),
+                                        list(map(str,tlist))))
             key = self.action.batch_key(env or self.env, tlist, slist)
             if key:
                 try:
@@ -611,7 +611,7 @@ class BuilderBase:
             ekw = self.executor_kw.copy()
             ekw['chdir'] = chdir
         if kw:
-            if kw.has_key('srcdir'):
+            if 'srcdir' in kw:
                 def prependDirIfRelative(f, srcdir=kw['srcdir']):
                     import os.path
                     if SCons.Util.is_String(f) and not os.path.isabs(f):
@@ -619,7 +619,7 @@ class BuilderBase:
                     return f
                 if not SCons.Util.is_List(source):
                     source = [source]
-                source = map(prependDirIfRelative, source)
+                source = list(map(prependDirIfRelative, source))
                 del kw['srcdir']
             if self.overrides:
                 env_kw = self.overrides.copy()
@@ -658,9 +658,7 @@ class BuilderBase:
             src_suffix = []
         elif not SCons.Util.is_List(src_suffix):
             src_suffix = [ src_suffix ]
-        adjust = lambda suf, s=self: \
-                        callable(suf) and suf or s.adjust_suffix(suf)
-        self.src_suffix = map(adjust, src_suffix)
+        self.src_suffix = [callable(suf) and suf or self.adjust_suffix(suf) for suf in src_suffix]
 
     def get_src_suffix(self, env):
         """Get the first src_suffix in the list of src_suffixes."""
@@ -723,7 +721,7 @@ class BuilderBase:
         lengths = list(set(map(len, src_suffixes)))
 
         def match_src_suffix(name, src_suffixes=src_suffixes, lengths=lengths):
-            node_suffixes = map(lambda l, n=name: n[-l:], lengths)
+            node_suffixes = [name[-l:] for l in lengths]
             for suf in src_suffixes:
                 if suf in node_suffixes:
                     return suf
@@ -749,8 +747,7 @@ class BuilderBase:
                     # target, then filter out any sources that this
                     # Builder isn't capable of building.
                     if len(tlist) > 1:
-                        mss = lambda t, m=match_src_suffix: m(t.name)
-                        tlist = filter(mss, tlist)
+                        tlist = [t for t in tlist if match_src_suffix(t.name)]
                     result.extend(tlist)
             else:
                 result.append(s)
@@ -819,7 +816,7 @@ class BuilderBase:
                 return memo_dict[memo_key]
             except KeyError:
                 pass
-        suffixes = map(lambda x, s=self, e=env: e.subst(x), self.src_suffix)
+        suffixes = [env.subst(x) for x in self.src_suffix]
         memo_dict[memo_key] = suffixes
         return suffixes
 
@@ -838,7 +835,7 @@ class BuilderBase:
             sdict[s] = 1
         for builder in self.get_src_builders(env):
             for s in builder.src_suffixes(env):
-                if not sdict.has_key(s):
+                if s not in sdict:
                     sdict[s] = 1
                     suffixes.append(s)
         return suffixes
@@ -857,6 +854,8 @@ class CompositeBuilder(SCons.Util.Proxy):
         self.cmdgen = cmdgen
         self.builder = builder
 
+    __call__ = SCons.Util.Delegate('__call__')
+
     def add_action(self, suffix, action):
         self.cmdgen.add_action(suffix, action)
         self.set_src_suffix(self.cmdgen.src_suffixes())
diff --git a/engine/SCons/CacheDir.py b/engine/SCons/CacheDir.py
index 6977621..6b2e174 100644
--- a/engine/SCons/CacheDir.py
+++ b/engine/SCons/CacheDir.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/CacheDir.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/CacheDir.py 5023 2010/06/14 22:05:46 scons"
 
 __doc__ = """
 CacheDir support
@@ -29,7 +29,6 @@ CacheDir support
 
 import os.path
 import stat
-import string
 import sys
 
 import SCons.Action
@@ -101,7 +100,7 @@ def CachePushFunc(target, source, env):
             # has beaten us creating the directory.
             if not fs.isdir(cachedir):
                 msg = errfmt % (str(target), cachefile)
-                raise SCons.Errors.EnvironmentError, msg
+                raise SCons.Errors.EnvironmentError(msg)
 
     try:
         if fs.islink(t.path):
@@ -122,7 +121,7 @@ def CachePushFunc(target, source, env):
 
 CachePush = SCons.Action.Action(CachePushFunc, None)
 
-class CacheDir:
+class CacheDir(object):
 
     def __init__(self, path):
         try:
@@ -158,7 +157,7 @@ class CacheDir:
             return None, None
 
         sig = node.get_cachedir_bsig()
-        subdir = string.upper(sig[0])
+        subdir = sig[0].upper()
         dir = os.path.join(self.path, subdir)
         return dir, os.path.join(dir, sig)
 
diff --git a/engine/SCons/Conftest.py b/engine/SCons/Conftest.py
index e995e77..04a6bc2 100644
--- a/engine/SCons/Conftest.py
+++ b/engine/SCons/Conftest.py
@@ -101,7 +101,6 @@ Autoconf-like configuration support; low level implementation of tests.
 #
 
 import re
-import string
 from types import IntType
 
 #
@@ -230,7 +229,7 @@ int main()
 
 def _check_empty_program(context, comp, text, language, use_shared = False):
     """Return 0 on success, 1 otherwise."""
-    if not context.env.has_key(comp) or not context.env[comp]:
+    if comp not in context.env or not context.env[comp]:
         # The compiler construction variable is not set or empty
         return 1
 
@@ -636,7 +635,7 @@ return 0;
 """ % (call or "")
 
     if call:
-        i = string.find(call, "\n")
+        i = call.find("\n")
         if i > 0:
             calltext = call[:i] + ".."
         elif call[-1] == ';':
@@ -723,14 +722,14 @@ def _Have(context, key, have, comment = None):
              Give "have" as is should appear in the header file, include quotes
              when desired and escape special characters!
     """
-    key_up = string.upper(key)
+    key_up = key.upper()
     key_up = re.sub('[^A-Z0-9_]', '_', key_up)
     context.havedict[key_up] = have
     if have == 1:
         line = "#define %s 1\n" % key_up
     elif have == 0:
         line = "/* #undef %s */\n" % key_up
-    elif type(have) == IntType:
+    elif isinstance(have, IntType):
         line = "#define %s %d\n" % (key_up, have)
     else:
         line = "#define %s %s\n" % (key_up, str(have))
@@ -755,7 +754,7 @@ def _LogFailed(context, text, msg):
     """
     if LogInputFiles:
         context.Log("Failed program was:\n")
-        lines = string.split(text, '\n')
+        lines = text.split('\n')
         if len(lines) and lines[-1] == '':
             lines = lines[:-1]              # remove trailing empty line
         n = 1
diff --git a/engine/SCons/Debug.py b/engine/SCons/Debug.py
index afff44b..ec7dbbd 100644
--- a/engine/SCons/Debug.py
+++ b/engine/SCons/Debug.py
@@ -1,7 +1,6 @@
 """SCons.Debug
 
-Code for debugging SCons internal things.  Not everything here is
-guaranteed to work all the way back to Python 1.5.2, and shouldn't be
+Code for debugging SCons internal things.  Shouldn't be
 needed by most users.
 
 """
@@ -29,42 +28,31 @@ needed by most users.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Debug.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Debug.py 5023 2010/06/14 22:05:46 scons"
 
 import os
-import string
 import sys
 import time
-
-# Recipe 14.10 from the Python Cookbook.
-try:
-    import weakref
-except ImportError:
-    def logInstanceCreation(instance, name=None):
-        pass
-else:
-    def logInstanceCreation(instance, name=None):
-        if name is None:
-            name = instance.__class__.__name__
-        if not tracked_classes.has_key(name):
-            tracked_classes[name] = []
-        tracked_classes[name].append(weakref.ref(instance))
-
-
+import weakref
 
 tracked_classes = {}
 
+def logInstanceCreation(instance, name=None):
+    if name is None:
+        name = instance.__class__.__name__
+    if name not in tracked_classes:
+        tracked_classes[name] = []
+    tracked_classes[name].append(weakref.ref(instance))
+
 def string_to_classes(s):
     if s == '*':
-        c = tracked_classes.keys()
-        c.sort()
-        return c
+        return sorted(tracked_classes.keys())
     else:
-        return string.split(s)
+        return s.split()
 
 def fetchLoggedInstances(classes="*"):
     classnames = string_to_classes(classes)
-    return map(lambda cn: (cn, len(tracked_classes[cn])), classnames)
+    return [(cn, len(tracked_classes[cn])) for cn in classnames]
   
 def countLoggedInstances(classes, file=sys.stdout):
     for classname in string_to_classes(classes):
@@ -94,8 +82,12 @@ if sys.platform[:5] == "linux":
     # Linux doesn't actually support memory usage stats from getrusage().
     def memory():
         mstr = open('/proc/self/stat').read()
-        mstr = string.split(mstr)[22]
+        mstr = mstr.split()[22]
         return int(mstr)
+elif sys.platform[:6] == 'darwin':
+    #TODO really get memory stats for OS X
+    def memory():
+        return 0
 else:
     try:
         import resource
@@ -149,21 +141,15 @@ def caller_trace(back=0):
 
 # print a single caller and its callers, if any
 def _dump_one_caller(key, file, level=0):
-    l = []
-    for c,v in caller_dicts[key].items():
-        l.append((-v,c))
-    l.sort()
     leader = '      '*level
-    for v,c in l:
+    for v,c in sorted([(-v,c) for c,v in caller_dicts[key].items()]):
         file.write("%s  %6d %s:%d(%s)\n" % ((leader,-v) + func_shorten(c[-3:])))
-        if caller_dicts.has_key(c):
+        if c in caller_dicts:
             _dump_one_caller(c, file, level+1)
 
 # print each call tree
 def dump_caller_counts(file=sys.stdout):
-    keys = caller_bases.keys()
-    keys.sort()
-    for k in keys:
+    for k in sorted(caller_bases.keys()):
         file.write("Callers of %s:%d(%s), %d calls:\n"
                     % (func_shorten(k) + (caller_bases[k],)))
         _dump_one_caller(k, file)
@@ -175,15 +161,12 @@ shorten_list = [
 ]
 
 if os.sep != '/':
-   def platformize(t):
-       return (string.replace(t[0], '/', os.sep), t[1])
-   shorten_list = map(platformize, shorten_list)
-   del platformize
+    shorten_list = [(t[0].replace('/', os.sep), t[1]) for t in shorten_list]
 
 def func_shorten(func_tuple):
     f = func_tuple[0]
     for t in shorten_list:
-        i = string.find(f, t[0])
+        i = f.find(t[0])
         if i >= 0:
             if t[1]:
                 i = i + len(t[0])
diff --git a/engine/SCons/Defaults.py b/engine/SCons/Defaults.py
index c353134..8530aa3 100644
--- a/engine/SCons/Defaults.py
+++ b/engine/SCons/Defaults.py
@@ -31,19 +31,16 @@ from distutils.msvccompiler.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
+from __future__ import division
 
-__revision__ = "src/engine/SCons/Defaults.py 4720 2010/03/24 03:14:11 jars"
-
+__revision__ = "src/engine/SCons/Defaults.py 5023 2010/06/14 22:05:46 scons"
 
 
 import os
-import os.path
 import errno
 import shutil
 import stat
-import string
 import time
-import types
 import sys
 
 import SCons.Action
@@ -88,7 +85,7 @@ def DefaultEnvironment(*args, **kw):
     global _default_env
     if not _default_env:
         import SCons.Util
-        _default_env = apply(SCons.Environment.Environment, args, kw)
+        _default_env = SCons.Environment.Environment(*args, **kw)
         if SCons.Util.md5:
             _default_env.Decider('MD5')
         else:
@@ -120,7 +117,7 @@ def SharedFlagChecker(source, target, env):
             except AttributeError:
                 shared = None
             if not shared:
-                raise SCons.Errors.UserError, "Source file: %s is static and is not compatible with shared target: %s" % (src, target[0])
+                raise SCons.Errors.UserError("Source file: %s is static and is not compatible with shared target: %s" % (src, target[0]))
 
 SharedCheck = SCons.Action.Action(SharedFlagChecker, None)
 
@@ -165,7 +162,7 @@ def get_paths_str(dest):
         elem_strs = []
         for element in dest:
             elem_strs.append('"' + str(element) + '"')
-        return '[' + string.join(elem_strs, ', ') + ']'
+        return '[' + ', '.join(elem_strs) + ']'
     else:
         return '"' + str(dest) + '"'
 
@@ -225,7 +222,8 @@ def mkdir_func(dest):
             os.makedirs(str(entry))
         except os.error, e:
             p = str(entry)
-            if (e[0] == errno.EEXIST or (sys.platform=='win32' and e[0]==183)) \
+            if (e.args[0] == errno.EEXIST or
+                    (sys.platform=='win32' and e.args[0]==183)) \
                     and os.path.isdir(str(entry)):
                 pass            # not an error if already exists
             else:
@@ -315,16 +313,16 @@ def _concat_ixes(prefix, list, suffix, env):
 
     return result
 
-def _stripixes(prefix, list, suffix, stripprefixes, stripsuffixes, env, c=None):
+def _stripixes(prefix, itms, suffix, stripprefixes, stripsuffixes, env, c=None):
     """
-    This is a wrapper around _concat()/_concat_ixes() that checks for the
-    existence of prefixes or suffixes on list elements and strips them
+    This is a wrapper around _concat()/_concat_ixes() that checks for
+    the existence of prefixes or suffixes on list items and strips them
     where it finds them.  This is used by tools (like the GNU linker)
     that need to turn something like 'libfoo.a' into '-lfoo'.
     """
     
-    if not list:
-        return list
+    if not itms:
+        return itms
 
     if not callable(c):
         env_c = env['_concat']
@@ -337,11 +335,11 @@ def _stripixes(prefix, list, suffix, stripprefixes, stripsuffixes, env, c=None):
         else:
             c = _concat_ixes
     
-    stripprefixes = map(env.subst, SCons.Util.flatten(stripprefixes))
-    stripsuffixes = map(env.subst, SCons.Util.flatten(stripsuffixes))
+    stripprefixes = list(map(env.subst, SCons.Util.flatten(stripprefixes)))
+    stripsuffixes = list(map(env.subst, SCons.Util.flatten(stripsuffixes)))
 
     stripped = []
-    for l in SCons.PathList.PathList(list).subst_path(env, None, None):
+    for l in SCons.PathList.PathList(itms).subst_path(env, None, None):
         if isinstance(l, SCons.Node.FS.File):
             stripped.append(l)
             continue
@@ -374,7 +372,7 @@ def processDefines(defs):
     if SCons.Util.is_List(defs):
         l = []
         for d in defs:
-            if SCons.Util.is_List(d) or type(d) is types.TupleType:
+            if SCons.Util.is_List(d) or isinstance(d, tuple):
                 l.append(str(d[0]) + '=' + str(d[1]))
             else:
                 l.append(str(d))
@@ -386,10 +384,7 @@ def processDefines(defs):
         # Consequently, we have to sort the keys to ensure a
         # consistent order...
         l = []
-        keys = defs.keys()
-        keys.sort()
-        for k in keys:
-            v = defs[k]
+        for k,v in sorted(defs.items()):
             if v is None:
                 l.append(str(k))
             else:
@@ -405,7 +400,7 @@ def _defines(prefix, defs, suffix, env, c=_concat_ixes):
 
     return c(prefix, env.subst_path(processDefines(defs)), suffix, env)
     
-class NullCmdGenerator:
+class NullCmdGenerator(object):
     """This is a callable class that can be used in place of other
     command generators if you don't want them to do anything.
 
@@ -423,7 +418,7 @@ class NullCmdGenerator:
     def __call__(self, target, source, env, for_signature=None):
         return self.cmd
 
-class Variable_Method_Caller:
+class Variable_Method_Caller(object):
     """A class for finding a construction variable on the stack and
     calling one of its methods.
 
@@ -439,18 +434,18 @@ class Variable_Method_Caller:
         self.variable = variable
         self.method = method
     def __call__(self, *args, **kw):
-        try: 1/0
+        try: 1//0
         except ZeroDivisionError: 
             # Don't start iterating with the current stack-frame to
             # prevent creating reference cycles (f_back is safe).
             frame = sys.exc_info()[2].tb_frame.f_back
         variable = self.variable
         while frame:
-            if frame.f_locals.has_key(variable):
+            if variable in frame.f_locals:
                 v = frame.f_locals[variable]
                 if v:
                     method = getattr(v, self.method)
-                    return apply(method, args, kw)
+                    return method(*args, **kw)
             frame = frame.f_back
         return None
 
diff --git a/engine/SCons/Environment.py b/engine/SCons/Environment.py
index ac6de99..50a357d 100644
--- a/engine/SCons/Environment.py
+++ b/engine/SCons/Environment.py
@@ -30,9 +30,8 @@ Environment
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Environment.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Environment.py 5023 2010/06/14 22:05:46 scons"
 
 
 import copy
@@ -40,8 +39,7 @@ import os
 import sys
 import re
 import shlex
-import string
-from UserDict import UserDict
+from collections import UserDict
 
 import SCons.Action
 import SCons.Builder
@@ -61,7 +59,7 @@ import SCons.Tool
 import SCons.Util
 import SCons.Warnings
 
-class _Null:
+class _Null(object):
     pass
 
 _null = _Null
@@ -98,11 +96,11 @@ def apply_tools(env, tools, toolpath):
     if not tools:
         return
     # Filter out null tools from the list.
-    for tool in filter(None, tools):
-        if SCons.Util.is_List(tool) or type(tool)==type(()):
+    for tool in [_f for _f in tools if _f]:
+        if SCons.Util.is_List(tool) or isinstance(tool, tuple):
             toolname = tool[0]
             toolargs = tool[1] # should be a dict of kw args
-            tool = apply(env.Tool, [toolname], toolargs)
+            tool = env.Tool(toolname, **toolargs)
         else:
             env.Tool(tool)
 
@@ -173,7 +171,7 @@ def _delete_duplicates(l, keep_last):
         l.reverse()
     for i in l:
         try:
-            if not seen.has_key(i):
+            if i not in seen:
                 result.append(i)
                 seen[i]=1
         except TypeError:
@@ -196,7 +194,7 @@ def _delete_duplicates(l, keep_last):
 # BuilderWrapper a subclass that overrides __call__() to enforce specific
 # Builder calling conventions, simplified some of our higher-layer code.
 
-class MethodWrapper:
+class MethodWrapper(object):
     """
     A generic Wrapper class that associates a method (which can
     actually be any callable) with an object.  As part of creating this
@@ -221,7 +219,7 @@ class MethodWrapper:
 
     def __call__(self, *args, **kwargs):
         nargs = (self.object,) + args
-        return apply(self.method, nargs, kwargs)
+        return self.method(*nargs, **kwargs)
 
     def clone(self, new_object):
         """
@@ -257,7 +255,7 @@ class BuilderWrapper(MethodWrapper):
             target = [target]
         if source is not None and not SCons.Util.is_List(source):
             source = [source]
-        return apply(MethodWrapper.__call__, (self, target, source) + args, kw)
+        return MethodWrapper.__call__(self, target, source, *args, **kw)
 
     def __repr__(self):
         return '<BuilderWrapper %s>' % repr(self.name)
@@ -271,7 +269,7 @@ class BuilderWrapper(MethodWrapper):
         elif name == 'builder':
             return self.method
         else:
-            raise AttributeError, name
+            raise AttributeError(name)
 
     def __setattr__(self, name, value):
         if name == 'env':
@@ -290,7 +288,7 @@ class BuilderWrapper(MethodWrapper):
     # future, so leave it for now.
     #def execute(self, **kw):
     #    kw['env'] = self.env
-    #    apply(self.builder.execute, (), kw)
+    #    self.builder.execute(**kw)
 
 class BuilderDict(UserDict):
     """This is a dictionary-like class used by an Environment to hold
@@ -337,7 +335,7 @@ def is_valid_construction_var(varstr):
 
 
 
-class SubstitutionEnvironment:
+class SubstitutionEnvironment(object):
     """Base class for different flavors of construction environments.
 
     This class contains a minimal set of methods that handle contruction
@@ -395,7 +393,7 @@ class SubstitutionEnvironment:
         # Freeze the keys of self._special_set in a list for use by
         # methods that need to check.  (Empirically, list scanning has
         # gotten better than dict.has_key() in Python 2.5.)
-        self._special_set_keys = self._special_set.keys()
+        self._special_set_keys = list(self._special_set.keys())
 
     def __cmp__(self, other):
         return cmp(self._dict, other._dict)
@@ -419,7 +417,7 @@ class SubstitutionEnvironment:
         # list works a little better in Python 2.5, but that has the
         # disadvantage of maybe getting out of sync if we ever add more
         # variable names.  Using self._special_set.has_key() works a
-        # little better in Python 2.4, but is worse then this test.
+        # little better in Python 2.4, but is worse than this test.
         # So right now it seems like a good trade-off, but feel free to
         # revisit this with bench/env.__setitem__.py as needed (and
         # as newer versions of Python come out).
@@ -430,9 +428,9 @@ class SubstitutionEnvironment:
             # key and we don't need to check.  If we do check, using a
             # global, pre-compiled regular expression directly is more
             # efficient than calling another function or a method.
-            if not self._dict.has_key(key) \
+            if key not in self._dict \
                and not _is_valid_var.match(key):
-                    raise SCons.Errors.UserError, "Illegal construction variable `%s'" % key
+                    raise SCons.Errors.UserError("Illegal construction variable `%s'" % key)
             self._dict[key] = value
 
     def get(self, key, default=None):
@@ -440,13 +438,13 @@ class SubstitutionEnvironment:
         return self._dict.get(key, default)
 
     def has_key(self, key):
-        return self._dict.has_key(key)
+        return key in self._dict
 
     def __contains__(self, key):
         return self._dict.__contains__(key)
 
     def items(self):
-        return self._dict.items()
+        return list(self._dict.items())
 
     def arg2nodes(self, args, node_factory=_null, lookup_list=_null, **kw):
         if node_factory is _null:
@@ -471,7 +469,7 @@ class SubstitutionEnvironment:
                     if SCons.Util.is_String(n):
                         # n = self.subst(n, raw=1, **kw)
                         kw['raw'] = 1
-                        n = apply(self.subst, (n,), kw)
+                        n = self.subst(n, **kw)
                         if node_factory:
                             n = node_factory(n)
                     if SCons.Util.is_List(n):
@@ -481,7 +479,7 @@ class SubstitutionEnvironment:
                 elif node_factory:
                     # v = node_factory(self.subst(v, raw=1, **kw))
                     kw['raw'] = 1
-                    v = node_factory(apply(self.subst, (v,), kw))
+                    v = node_factory(self.subst(v, **kw))
                     if SCons.Util.is_List(v):
                         nodes.extend(v)
                     else:
@@ -566,7 +564,7 @@ class SubstitutionEnvironment:
                         # We have an object plus a string, or multiple
                         # objects that we need to smush together.  No choice
                         # but to make them into a string.
-                        p = string.join(map(SCons.Util.to_String_for_subst, p), '')
+                        p = ''.join(map(SCons.Util.to_String_for_subst, p))
             else:
                 p = s(p)
             r.append(p)
@@ -586,12 +584,11 @@ class SubstitutionEnvironment:
         # othewise force a shell
         if not SCons.Util.is_List(command): kw['shell'] = True
         # run constructed command
-        #TODO(1.5) p = SCons.Action._subproc(self, command, **kw)
-        p = apply(SCons.Action._subproc, (self, command), kw)
+        p = SCons.Action._subproc(self, command, **kw)
         out,err = p.communicate()
         status = p.wait()
         if err:
-            sys.stderr.write(err)
+            sys.stderr.write(unicode(err))
         if status:
             raise OSError("'%s' exited %d" % (command, status))
         return out
@@ -610,8 +607,7 @@ class SubstitutionEnvironment:
         Removes the specified function's MethodWrapper from the
         added_methods list, so we don't re-bind it when making a clone.
         """
-        is_not_func = lambda dm, f=function: not dm.method is f
-        self.added_methods = filter(is_not_func, self.added_methods)
+        self.added_methods = [dm for dm in self.added_methods if not dm.method is function]
 
     def Override(self, overrides):
         """
@@ -664,15 +660,13 @@ class SubstitutionEnvironment:
             'RPATH'         : [],
         }
 
-        # The use of the "me" parameter to provide our own name for
-        # recursion is an egregious hack to support Python 2.1 and before.
-        def do_parse(arg, me, self = self, dict = dict):
+        def do_parse(arg):
             # if arg is a sequence, recurse with each element
             if not arg:
                 return
 
             if not SCons.Util.is_String(arg):
-                for t in arg: me(t, me)
+                for t in arg: do_parse(t)
                 return
 
             # if arg is a command, execute it
@@ -681,11 +675,11 @@ class SubstitutionEnvironment:
 
             # utility function to deal with -D option
             def append_define(name, dict = dict):
-                t = string.split(name, '=')
+                t = name.split('=')
                 if len(t) == 1:
                     dict['CPPDEFINES'].append(name)
                 else:
-                    dict['CPPDEFINES'].append([t[0], string.join(t[1:], '=')])
+                    dict['CPPDEFINES'].append([t[0], '='.join(t[1:])])
 
             # Loop through the flags and add them to the appropriate option.
             # This tries to strike a balance between checking for all possible
@@ -791,7 +785,7 @@ class SubstitutionEnvironment:
                     dict['CCFLAGS'].append(arg)
     
         for arg in flags:
-            do_parse(arg, do_parse)
+            do_parse(arg)
         return dict
 
     def MergeFlags(self, args, unique=1, dict=None):
@@ -807,7 +801,7 @@ class SubstitutionEnvironment:
         if not SCons.Util.is_Dict(args):
             args = self.ParseFlags(args)
         if not unique:
-            apply(self.Append, (), args)
+            self.Append(**args)
             return self
         for key, value in args.items():
             if not value:
@@ -866,21 +860,10 @@ class SubstitutionEnvironment:
 #             if not pathval:
 #                 continue
 #             if prepend:
-#                 apply(self.PrependENVPath, (pathname, pathval))
+#                 self.PrependENVPath(pathname, pathval)
 #             else:
-#                 apply(self.AppendENVPath, (pathname, pathval))
-
+#                 self.AppendENVPath(pathname, pathval)
 
-# Used by the FindSourceFiles() method, below.
-# Stuck here for support of pre-2.2 Python versions.
-def build_source(ss, result):
-    for s in ss:
-        if isinstance(s, SCons.Node.FS.Dir):
-            build_source(s.all_children(), result)
-        elif s.has_builder():
-            build_source(s.sources, result)
-        elif isinstance(s.disambiguate(), SCons.Node.FS.File):
-            result.append(s)
 
 def default_decide_source(dependency, target, prev_ni):
     f = SCons.Defaults.DefaultEnvironment().decide_source
@@ -979,15 +962,15 @@ class Base(SubstitutionEnvironment):
         # Apply the passed-in and customizable variables to the
         # environment before calling the tools, because they may use
         # some of them during initialization.
-        if kw.has_key('options'):
+        if 'options' in kw:
             # Backwards compatibility:  they may stll be using the
             # old "options" keyword.
             variables = kw['options']
             del kw['options']
-        apply(self.Replace, (), kw)
-        keys = kw.keys()
+        self.Replace(**kw)
+        keys = list(kw.keys())
         if variables:
-            keys = keys + variables.keys()
+            keys = keys + list(variables.keys())
             variables.Update(self)
 
         save = {}
@@ -1100,7 +1083,7 @@ class Base(SubstitutionEnvironment):
             for scanner in scanners:
                 for k in scanner.get_skeys(self):
                     if k and self['PLATFORM'] == 'win32':
-                        k = string.lower(k)
+                        k = k.lower()
                     result[k] = scanner
 
         self._memo['_gsm'] = result
@@ -1111,7 +1094,7 @@ class Base(SubstitutionEnvironment):
         """Find the appropriate scanner given a key (usually a file suffix).
         """
         if skey and self['PLATFORM'] == 'win32':
-            skey = string.lower(skey)
+            skey = skey.lower()
         return self._gsm().get(skey)
 
     def scanner_map_delete(self, kw=None):
@@ -1240,13 +1223,13 @@ class Base(SubstitutionEnvironment):
         """
 
         orig = ''
-        if self._dict.has_key(envname) and self._dict[envname].has_key(name):
+        if envname in self._dict and name in self._dict[envname]:
             orig = self._dict[envname][name]
 
         nv = SCons.Util.AppendPath(orig, newpath, sep, delete_existing,
                                    canonicalize=self._canonicalize)
 
-        if not self._dict.has_key(envname):
+        if envname not in self._dict:
             self._dict[envname] = {}
 
         self._dict[envname][name] = nv
@@ -1261,7 +1244,7 @@ class Base(SubstitutionEnvironment):
         for key, val in kw.items():
             if SCons.Util.is_List(val):
                 val = _delete_duplicates(val, delete_existing)
-            if not self._dict.has_key(key) or self._dict[key] in ('', None):
+            if key not in self._dict or self._dict[key] in ('', None):
                 self._dict[key] = val
             elif SCons.Util.is_Dict(self._dict[key]) and \
                  SCons.Util.is_Dict(val):
@@ -1271,9 +1254,9 @@ class Base(SubstitutionEnvironment):
                 if not SCons.Util.is_List(dk):
                     dk = [dk]
                 if delete_existing:
-                    dk = filter(lambda x, val=val: x not in val, dk)
+                    dk = [x for x in dk if x not in val]
                 else:
-                    val = filter(lambda x, dk=dk: x not in dk, val)
+                    val = [x for x in val if x not in dk]
                 self._dict[key] = dk + val
             else:
                 dk = self._dict[key]
@@ -1281,14 +1264,14 @@ class Base(SubstitutionEnvironment):
                     # By elimination, val is not a list.  Since dk is a
                     # list, wrap val in a list first.
                     if delete_existing:
-                        dk = filter(lambda x, val=val: x not in val, dk)
+                        dk = [x for x in dk if x not in val]
                         self._dict[key] = dk + [val]
                     else:
                         if not val in dk:
                             self._dict[key] = dk + [val]
                 else:
                     if delete_existing:
-                        dk = filter(lambda x, val=val: x not in val, dk)
+                        dk = [x for x in dk if x not in val]
                     self._dict[key] = dk + val
         self.scanner_map_delete(kw)
 
@@ -1327,12 +1310,12 @@ class Base(SubstitutionEnvironment):
         new = {}
         for key, value in kw.items():
             new[key] = SCons.Subst.scons_subst_once(value, self, key)
-        apply(clone.Replace, (), new)
+        clone.Replace(**new)
 
         apply_tools(clone, tools, toolpath)
 
         # apply them again in case the tools overwrote them
-        apply(clone.Replace, (), new)        
+        clone.Replace(**new)        
 
         # Finally, apply any flags to be merged in
         if parse_flags: clone.MergeFlags(parse_flags)
@@ -1346,7 +1329,7 @@ class Base(SubstitutionEnvironment):
             msg = "The env.Copy() method is deprecated; use the env.Clone() method instead."
             SCons.Warnings.warn(SCons.Warnings.DeprecatedCopyWarning, msg)
             _warn_copy_deprecated = False
-        return apply(self.Clone, args, kw)
+        return self.Clone(*args, **kw)
 
     def _changed_build(self, dependency, target, prev_ni):
         if dependency.changed_state(target, prev_ni):
@@ -1383,7 +1366,7 @@ class Base(SubstitutionEnvironment):
         copy_function = self._copy2_from_cache
         if function in ('MD5', 'content'):
             if not SCons.Util.md5:
-                raise UserError, "MD5 signatures are not available in this version of Python."
+                raise UserError("MD5 signatures are not available in this version of Python.")
             function = self._changed_content
         elif function == 'MD5-timestamp':
             function = self._changed_timestamp_then_content
@@ -1393,7 +1376,7 @@ class Base(SubstitutionEnvironment):
         elif function == 'timestamp-match':
             function = self._changed_timestamp_match
         elif not callable(function):
-            raise UserError, "Unknown Decider value %s" % repr(function)
+            raise UserError("Unknown Decider value %s" % repr(function))
 
         # We don't use AddMethod because we don't want to turn the
         # function, which only expects three arguments, into a bound
@@ -1416,7 +1399,7 @@ class Base(SubstitutionEnvironment):
     def Dictionary(self, *args):
         if not args:
             return self._dict
-        dlist = map(lambda x, s=self: s._dict[x], args)
+        dlist = [self._dict[x] for x in args]
         if len(dlist) == 1:
             dlist = dlist[0]
         return dlist
@@ -1472,7 +1455,7 @@ class Base(SubstitutionEnvironment):
                 return env.MergeFlags(cmd, unique)
             function = parse_conf
         if SCons.Util.is_List(command):
-            command = string.join(command)
+            command = ' '.join(command)
         command = self.subst(command)
         return function(self, self.backtick(command))
 
@@ -1494,23 +1477,25 @@ class Base(SubstitutionEnvironment):
                 raise
             return
         lines = SCons.Util.LogicalLines(fp).readlines()
-        lines = filter(lambda l: l[0] != '#', lines)
+        lines = [l for l in lines if l[0] != '#']
         tdlist = []
         for line in lines:
             try:
-                target, depends = string.split(line, ':', 1)
-            except (AttributeError, TypeError, ValueError):
-                # Python 1.5.2 throws TypeError if line isn't a string,
-                # Python 2.x throws AttributeError because it tries
-                # to call line.split().  Either can throw ValueError
-                # if the line doesn't split into two or more elements.
+                target, depends = line.split(':', 1)
+            except (AttributeError, ValueError):
+                # Throws AttributeError if line isn't a string.  Can throw
+                # ValueError if line doesn't split into two or more elements.
                 pass
             else:
-                tdlist.append((string.split(target), string.split(depends)))
+                tdlist.append((target.split(), depends.split()))
         if only_one:
-            targets = reduce(lambda x, y: x+y, map(lambda p: p[0], tdlist))
+            targets = []
+            for td in tdlist:
+                targets.extend(td[0])
             if len(targets) > 1:
-                raise SCons.Errors.UserError, "More than one dependency target found in `%s':  %s" % (filename, targets)
+                raise SCons.Errors.UserError(
+                            "More than one dependency target found in `%s':  %s"
+                                            % (filename, targets))
         for target, depends in tdlist:
             self.Depends(target, depends)
 
@@ -1596,13 +1581,13 @@ class Base(SubstitutionEnvironment):
         """
 
         orig = ''
-        if self._dict.has_key(envname) and self._dict[envname].has_key(name):
+        if envname in self._dict and name in self._dict[envname]:
             orig = self._dict[envname][name]
 
         nv = SCons.Util.PrependPath(orig, newpath, sep, delete_existing,
                                     canonicalize=self._canonicalize)
 
-        if not self._dict.has_key(envname):
+        if envname not in self._dict:
             self._dict[envname] = {}
 
         self._dict[envname][name] = nv
@@ -1617,7 +1602,7 @@ class Base(SubstitutionEnvironment):
         for key, val in kw.items():
             if SCons.Util.is_List(val):
                 val = _delete_duplicates(val, not delete_existing)
-            if not self._dict.has_key(key) or self._dict[key] in ('', None):
+            if key not in self._dict or self._dict[key] in ('', None):
                 self._dict[key] = val
             elif SCons.Util.is_Dict(self._dict[key]) and \
                  SCons.Util.is_Dict(val):
@@ -1627,9 +1612,9 @@ class Base(SubstitutionEnvironment):
                 if not SCons.Util.is_List(dk):
                     dk = [dk]
                 if delete_existing:
-                    dk = filter(lambda x, val=val: x not in val, dk)
+                    dk = [x for x in dk if x not in val]
                 else:
-                    val = filter(lambda x, dk=dk: x not in dk, val)
+                    val = [x for x in val if x not in dk]
                 self._dict[key] = val + dk
             else:
                 dk = self._dict[key]
@@ -1637,14 +1622,14 @@ class Base(SubstitutionEnvironment):
                     # By elimination, val is not a list.  Since dk is a
                     # list, wrap val in a list first.
                     if delete_existing:
-                        dk = filter(lambda x, val=val: x not in val, dk)
+                        dk = [x for x in dk if x not in val]
                         self._dict[key] = [val] + dk
                     else:
                         if not val in dk:
                             self._dict[key] = [val] + dk
                 else:
                     if delete_existing:
-                        dk = filter(lambda x, val=val: x not in val, dk)
+                        dk = [x for x in dk if x not in val]
                     self._dict[key] = val + dk
         self.scanner_map_delete(kw)
 
@@ -1690,9 +1675,9 @@ class Base(SubstitutionEnvironment):
 
     def SetDefault(self, **kw):
         for k in kw.keys():
-            if self._dict.has_key(k):
+            if k in self._dict:
                 del kw[k]
-        apply(self.Replace, (), kw)
+        self.Replace(**kw)
 
     def _find_toolpath_dir(self, tp):
         return self.fs.Dir(self.subst(tp)).srcnode().abspath
@@ -1702,8 +1687,8 @@ class Base(SubstitutionEnvironment):
             tool = self.subst(tool)
             if toolpath is None:
                 toolpath = self.get('toolpath', [])
-            toolpath = map(self._find_toolpath_dir, toolpath)
-            tool = apply(SCons.Tool.Tool, (tool, toolpath), kw)
+            toolpath = list(map(self._find_toolpath_dir, toolpath))
+            tool = SCons.Tool.Tool(tool, toolpath, **kw)
         tool(self)
 
     def WhereIs(self, prog, path=None, pathext=None, reject=[]):
@@ -1741,15 +1726,15 @@ class Base(SubstitutionEnvironment):
             if SCons.Util.is_String(a):
                 a = self.subst(a)
             return a
-        nargs = map(subst_string, args)
+        nargs = list(map(subst_string, args))
         nkw = self.subst_kw(kw)
-        return apply(SCons.Action.Action, nargs, nkw)
+        return SCons.Action.Action(*nargs, **nkw)
 
     def AddPreAction(self, files, action):
         nodes = self.arg2nodes(files, self.fs.Entry)
         action = SCons.Action.Action(action)
         uniq = {}
-        for executor in map(lambda n: n.get_executor(), nodes):
+        for executor in [n.get_executor() for n in nodes]:
             uniq[executor] = 1
         for executor in uniq.keys():
             executor.add_pre_action(action)
@@ -1759,7 +1744,7 @@ class Base(SubstitutionEnvironment):
         nodes = self.arg2nodes(files, self.fs.Entry)
         action = SCons.Action.Action(action)
         uniq = {}
-        for executor in map(lambda n: n.get_executor(), nodes):
+        for executor in [n.get_executor() for n in nodes]:
             uniq[executor] = 1
         for executor in uniq.keys():
             executor.add_post_action(action)
@@ -1769,7 +1754,7 @@ class Base(SubstitutionEnvironment):
         tlist = self.arg2nodes(target, self.ans.Alias)
         if not SCons.Util.is_List(source):
             source = [source]
-        source = filter(None, source)
+        source = [_f for _f in source if _f]
 
         if not action:
             if not source:
@@ -1796,7 +1781,7 @@ class Base(SubstitutionEnvironment):
             'multi'             : 1,
             'is_explicit'       : None,
         })
-        bld = apply(SCons.Builder.Builder, (), nkw)
+        bld = SCons.Builder.Builder(**nkw)
 
         # Apply the Builder separately to each target so that the Aliases
         # stay separate.  If we did one "normal" Builder call with the
@@ -1813,7 +1798,7 @@ class Base(SubstitutionEnvironment):
                 b = bld
             else:
                 nkw['action'] = b.action + action
-                b = apply(SCons.Builder.Builder, (), nkw)
+                b = SCons.Builder.Builder(**nkw)
             t.convert()
             result.extend(b(self, t, t.sources + source))
         return result
@@ -1827,14 +1812,16 @@ class Base(SubstitutionEnvironment):
         return tlist
 
     def BuildDir(self, *args, **kw):
-        if kw.has_key('build_dir'):
+        msg = """BuildDir() and the build_dir keyword have been deprecated;\n\tuse VariantDir() and the variant_dir keyword instead."""
+        SCons.Warnings.warn(SCons.Warnings.DeprecatedBuildDirWarning, msg)
+        if 'build_dir' in kw:
             kw['variant_dir'] = kw['build_dir']
             del kw['build_dir']
-        return apply(self.VariantDir, args, kw)
+        return self.VariantDir(*args, **kw)
 
     def Builder(self, **kw):
         nkw = self.subst_kw(kw)
-        return apply(SCons.Builder.Builder, [], nkw)
+        return SCons.Builder.Builder(**nkw)
 
     def CacheDir(self, path):
         import SCons.CacheDir
@@ -1862,7 +1849,7 @@ class Base(SubstitutionEnvironment):
             nkw['custom_tests'] = self.subst_kw(nkw['custom_tests'])
         except KeyError:
             pass
-        return apply(SCons.SConf.SConf, nargs, nkw)
+        return SCons.SConf.SConf(*nargs, **nkw)
 
     def Command(self, target, source, action, **kw):
         """Builds the supplied target files from the supplied
@@ -1877,8 +1864,8 @@ class Base(SubstitutionEnvironment):
         try: bkw['source_scanner'] = kw['source_scanner']
         except KeyError: pass
         else: del kw['source_scanner']
-        bld = apply(SCons.Builder.Builder, (), bkw)
-        return apply(bld, (self, target, source), kw)
+        bld = SCons.Builder.Builder(**bkw)
+        return bld(self, target, source, **kw)
 
     def Depends(self, target, dependency):
         """Explicity specify that 'target's depend on 'dependency'."""
@@ -1895,9 +1882,9 @@ class Base(SubstitutionEnvironment):
         if SCons.Util.is_Sequence(s):
             result=[]
             for e in s:
-                result.append(apply(self.fs.Dir, (e,) + args, kw))
+                result.append(self.fs.Dir(e, *args, **kw))
             return result
-        return apply(self.fs.Dir, (s,) + args, kw)
+        return self.fs.Dir(s, *args, **kw)
 
     def NoClean(self, *targets):
         """Tags a target so that it will not be cleaned by -c"""
@@ -1924,17 +1911,17 @@ class Base(SubstitutionEnvironment):
         if SCons.Util.is_Sequence(s):
             result=[]
             for e in s:
-                result.append(apply(self.fs.Entry, (e,) + args, kw))
+                result.append(self.fs.Entry(e, *args, **kw))
             return result
-        return apply(self.fs.Entry, (s,) + args, kw)
+        return self.fs.Entry(s, *args, **kw)
 
     def Environment(self, **kw):
-        return apply(SCons.Environment.Environment, [], self.subst_kw(kw))
+        return SCons.Environment.Environment(**self.subst_kw(kw))
 
     def Execute(self, action, *args, **kw):
         """Directly execute an action through an Environment
         """
-        action = apply(self.Action, (action,) + args, kw)
+        action = self.Action(action, *args, **kw)
         result = action([], [], self)
         if isinstance(result, SCons.Errors.BuildError):
             errstr = result.errstr
@@ -1952,9 +1939,9 @@ class Base(SubstitutionEnvironment):
         if SCons.Util.is_Sequence(s):
             result=[]
             for e in s:
-                result.append(apply(self.fs.File, (e,) + args, kw))
+                result.append(self.fs.File(e, *args, **kw))
             return result
-        return apply(self.fs.File, (s,) + args, kw)
+        return self.fs.File(s, *args, **kw)
 
     def FindFile(self, file, dirs):
         file = self.subst(file)
@@ -1965,7 +1952,7 @@ class Base(SubstitutionEnvironment):
         return SCons.Util.flatten(sequence)
 
     def GetBuildPath(self, files):
-        result = map(str, self.arg2nodes(files, self.fs.Entry))
+        result = list(map(str, self.arg2nodes(files, self.fs.Entry)))
         if SCons.Util.is_List(files):
             return result
         else:
@@ -2007,7 +1994,7 @@ class Base(SubstitutionEnvironment):
 
     def Repository(self, *dirs, **kw):
         dirs = self.arg2nodes(list(dirs), self.fs.Dir)
-        apply(self.fs.Repository, dirs, kw)
+        self.fs.Repository(*dirs, **kw)
 
     def Requires(self, target, prerequisite):
         """Specify that 'prerequisite' must be built before 'target',
@@ -2026,7 +2013,7 @@ class Base(SubstitutionEnvironment):
                 arg = self.subst(arg)
             nargs.append(arg)
         nkw = self.subst_kw(kw)
-        return apply(SCons.Scanner.Base, nargs, nkw)
+        return SCons.Scanner.Base(*nargs, **nkw)
 
     def SConsignFile(self, name=".sconsign", dbm_module=None):
         if name is not None:
@@ -2048,7 +2035,7 @@ class Base(SubstitutionEnvironment):
 
         for side_effect in side_effects:
             if side_effect.multiple_side_effect_has_builder():
-                raise SCons.Errors.UserError, "Multiple ways to build the same target were specified for: %s" % str(side_effect)
+                raise SCons.Errors.UserError("Multiple ways to build the same target were specified for: %s" % str(side_effect))
             side_effect.add_source(targets)
             side_effect.side_effect = 1
             self.Precious(side_effect)
@@ -2058,6 +2045,9 @@ class Base(SubstitutionEnvironment):
 
     def SourceCode(self, entry, builder):
         """Arrange for a source code builder for (part of) a tree."""
+        msg = """SourceCode() has been deprecated and there is no replacement.
+\tIf you need this function, please contact dev@scons.tigris.org."""
+        SCons.Warnings.warn(SCons.Warnings.DeprecatedSourceCodeWarning, msg)
         entries = self.arg2nodes(entry, self.fs.Entry)
         for entry in entries:
             entry.set_src_builder(builder)
@@ -2074,12 +2064,12 @@ class Base(SubstitutionEnvironment):
         self.src_sig_type = type
         if type == 'MD5':
             if not SCons.Util.md5:
-                raise UserError, "MD5 signatures are not available in this version of Python."
+                raise UserError("MD5 signatures are not available in this version of Python.")
             self.decide_source = self._changed_content
         elif type == 'timestamp':
             self.decide_source = self._changed_timestamp_match
         else:
-            raise UserError, "Unknown source signature type '%s'" % type
+            raise UserError("Unknown source signature type '%s'" % type)
 
     def Split(self, arg):
         """This function converts a string or list into a list of strings
@@ -2093,9 +2083,9 @@ class Base(SubstitutionEnvironment):
               in the list are not split at spaces.
         In all cases, the function returns a list of Nodes and strings."""
         if SCons.Util.is_List(arg):
-            return map(self.subst, arg)
+            return list(map(self.subst, arg))
         elif SCons.Util.is_String(arg):
-            return string.split(self.subst(arg))
+            return self.subst(arg).split()
         else:
             return [self.subst(arg)]
 
@@ -2110,7 +2100,7 @@ class Base(SubstitutionEnvironment):
         self.tgt_sig_type = type
         if type in ('MD5', 'content'):
             if not SCons.Util.md5:
-                raise UserError, "MD5 signatures are not available in this version of Python."
+                raise UserError("MD5 signatures are not available in this version of Python.")
             self.decide_target = self._changed_content
         elif type == 'timestamp':
             self.decide_target = self._changed_timestamp_match
@@ -2119,7 +2109,7 @@ class Base(SubstitutionEnvironment):
         elif type == 'source':
             self.decide_target = self._changed_source
         else:
-            raise UserError, "Unknown target signature type '%s'"%type
+            raise UserError("Unknown target signature type '%s'"%type)
 
     def Value(self, value, built_value=None):
         """
@@ -2137,17 +2127,15 @@ class Base(SubstitutionEnvironment):
         node = self.arg2nodes(node, self.fs.Entry)[0]
 
         sources = []
-        # Uncomment this and get rid of the global definition when we
-        # drop support for pre-2.2 Python versions.
-        #def build_source(ss, result):
-        #    for s in ss:
-        #        if isinstance(s, SCons.Node.FS.Dir):
-        #            build_source(s.all_children(), result)
-        #        elif s.has_builder():
-        #            build_source(s.sources, result)
-        #        elif isinstance(s.disambiguate(), SCons.Node.FS.File):
-        #            result.append(s)
-        build_source(node.all_children(), sources)
+        def build_source(ss):
+            for s in ss:
+                if isinstance(s, SCons.Node.FS.Dir):
+                    build_source(s.all_children())
+                elif s.has_builder():
+                    build_source(s.sources)
+                elif isinstance(s.disambiguate(), SCons.Node.FS.File):
+                    sources.append(s)
+        build_source(node.all_children())
 
     # THIS CODE APPEARS TO HAVE NO EFFECT
     #    # get the final srcnode for all nodes, this means stripping any
@@ -2208,7 +2196,7 @@ class OverrideEnvironment(Base):
             return self.__dict__['__subject'].__getitem__(key)
     def __setitem__(self, key, value):
         if not is_valid_construction_var(key):
-            raise SCons.Errors.UserError, "Illegal construction variable `%s'" % key
+            raise SCons.Errors.UserError("Illegal construction variable `%s'" % key)
         self.__dict__['overrides'][key] = value
     def __delitem__(self, key):
         try:
@@ -2235,7 +2223,7 @@ class OverrideEnvironment(Base):
             self.__dict__['overrides'][key]
             return 1
         except KeyError:
-            return self.__dict__['__subject'].has_key(key)
+            return key in self.__dict__['__subject']
     def __contains__(self, key):
         if self.__dict__['overrides'].__contains__(key):
             return 1
@@ -2247,7 +2235,7 @@ class OverrideEnvironment(Base):
         return d
     def items(self):
         """Emulates the items() method of dictionaries."""
-        return self.Dictionary().items()
+        return list(self.Dictionary().items())
 
     # Overridden private construction environment methods.
     def _update(self, dict):
@@ -2314,13 +2302,13 @@ def NoSubstitutionProxy(subject):
             nkw = kwargs.copy()
             nkw['gvars'] = {}
             self.raw_to_mode(nkw)
-            return apply(SCons.Subst.scons_subst_list, nargs, nkw)
+            return SCons.Subst.scons_subst_list(*nargs, **nkw)
         def subst_target_source(self, string, *args, **kwargs):
             nargs = (string, self,) + args
             nkw = kwargs.copy()
             nkw['gvars'] = {}
             self.raw_to_mode(nkw)
-            return apply(SCons.Subst.scons_subst, nargs, nkw)
+            return SCons.Subst.scons_subst(*nargs, **nkw)
     return _NoSubstitutionProxy(subject)
 
 # Local Variables:
diff --git a/engine/SCons/Errors.py b/engine/SCons/Errors.py
index 69b389a..542bc47 100644
--- a/engine/SCons/Errors.py
+++ b/engine/SCons/Errors.py
@@ -28,7 +28,7 @@ and user errors in SCons.
 
 """
 
-__revision__ = "src/engine/SCons/Errors.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Errors.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Util
 
@@ -133,7 +133,7 @@ class ExplicitExit(Exception):
         self.node = node
         self.status = status
         self.exitstatus = status
-        apply(Exception.__init__, (self,) + args)
+        Exception.__init__(self, *args)
 
 def convert_to_BuildError(status, exc_info=None):
     """
@@ -157,9 +157,7 @@ def convert_to_BuildError(status, exc_info=None):
             status=status,      # might be 0, OK here
             exitstatus=status,      # might be 0, OK here
             exc_info=exc_info)
-    # TODO(1.5):
-    #elif isinstance(status, (StopError, UserError)):
-    elif isinstance(status, StopError) or isinstance(status, UserError):
+    elif isinstance(status, (StopError, UserError)):
         buildError = BuildError(
             errstr=str(status),
             status=2,
diff --git a/engine/SCons/Executor.py b/engine/SCons/Executor.py
index 44a1b9e..7bb450a 100644
--- a/engine/SCons/Executor.py
+++ b/engine/SCons/Executor.py
@@ -26,19 +26,17 @@ Nodes.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Executor.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Executor.py 5023 2010/06/14 22:05:46 scons"
 
-import string
-import UserList
+import collections
 
 from SCons.Debug import logInstanceCreation
 import SCons.Errors
 import SCons.Memoize
 
 
-class Batch:
+class Batch(object):
     """Remembers exact association between targets
     and sources of executor."""
     def __init__(self, targets=[], sources=[]):
@@ -47,15 +45,15 @@ class Batch:
 
 
 
-class TSList(UserList.UserList):
+class TSList(collections.UserList):
     """A class that implements $TARGETS or $SOURCES expansions by wrapping
     an executor Method.  This class is used in the Executor.lvars()
     to delay creation of NodeList objects until they're needed.
 
-    Note that we subclass UserList.UserList purely so that the
+    Note that we subclass collections.UserList purely so that the
     is_Sequence() function will identify an object of this class as
     a list during variable expansion.  We're not really using any
-    UserList.UserList methods in practice.
+    collections.UserList methods in practice.
     """
     def __init__(self, func):
         self.func = func
@@ -76,7 +74,7 @@ class TSList(UserList.UserList):
         nl = self.func()
         return repr(nl)
 
-class TSObject:
+class TSObject(object):
     """A class that implements $TARGET or $SOURCE expansions by wrapping
     an Executor method.
     """
@@ -110,7 +108,7 @@ def rfile(node):
         return rfile()
 
 
-class Executor:
+class Executor(object):
     """A class for controlling instances of executing an action.
 
     This largely exists to hold a single association of an action,
@@ -161,10 +159,10 @@ class Executor:
         ut = []
         for b in self.batches:
             if b.targets[0].is_up_to_date():
-                us.extend(map(rfile, b.sources))
+                us.extend(list(map(rfile, b.sources)))
                 ut.extend(b.targets)
             else:
-                cs.extend(map(rfile, b.sources))
+                cs.extend(list(map(rfile, b.sources)))
                 ct.extend(b.targets)
         self._changed_sources_list = SCons.Util.NodeList(cs)
         self._changed_targets_list = SCons.Util.NodeList(ct)
@@ -190,14 +188,14 @@ class Executor:
         return rfile(self.batches[0].sources[0]).get_subst_proxy()
 
     def _get_sources(self, *args, **kw):
-        return SCons.Util.NodeList(map(lambda n: rfile(n).get_subst_proxy(), self.get_all_sources()))
+        return SCons.Util.NodeList([rfile(n).get_subst_proxy() for n in self.get_all_sources()])
 
     def _get_target(self, *args, **kw):
         #return SCons.Util.NodeList([self.batches[0].targets[0].get_subst_proxy()])
         return self.batches[0].targets[0].get_subst_proxy()
 
     def _get_targets(self, *args, **kw):
-        return SCons.Util.NodeList(map(lambda n: n.get_subst_proxy(), self.get_all_targets()))
+        return SCons.Util.NodeList([n.get_subst_proxy() for n in self.get_all_targets()])
 
     def _get_unchanged_sources(self, *args, **kw):
         try:
@@ -226,7 +224,7 @@ class Executor:
         if not SCons.Util.is_List(action):
             if not action:
                 import SCons.Errors
-                raise SCons.Errors.UserError, "Executor must have an action."
+                raise SCons.Errors.UserError("Executor must have an action.")
             action = [action]
         self.action_list = action
 
@@ -237,16 +235,14 @@ class Executor:
         """Returns all targets for all batches of this Executor."""
         result = []
         for batch in self.batches:
-            # TODO(1.5):  remove the list() cast
-            result.extend(list(batch.targets))
+            result.extend(batch.targets)
         return result
 
     def get_all_sources(self):
         """Returns all sources for all batches of this Executor."""
         result = []
         for batch in self.batches:
-            # TODO(1.5):  remove the list() cast
-            result.extend(list(batch.sources))
+            result.extend(batch.sources)
         return result
 
     def get_all_children(self):
@@ -271,8 +267,7 @@ class Executor:
         """
         result = SCons.Util.UniqueList([])
         for target in self.get_all_targets():
-            # TODO(1.5):  remove the list() cast
-            result.extend(list(target.prerequisites))
+            result.extend(target.prerequisites)
         return result
 
     def get_action_side_effects(self):
@@ -342,7 +337,7 @@ class Executor:
         for act in self.get_action_list():
             #args = (self.get_all_targets(), self.get_all_sources(), env)
             args = ([], [], env)
-            status = apply(act, args, kw)
+            status = act(*args, **kw)
             if isinstance(status, SCons.Errors.BuildError):
                 status.executor = self
                 raise status
@@ -372,7 +367,7 @@ class Executor:
         # TODO(batch):  extend to multiple batches
         assert (len(self.batches) == 1)
         # TODO(batch):  remove duplicates?
-        sources = filter(lambda x, s=self.batches[0].sources: x not in s, sources)
+        sources = [x for x in sources if x not in self.batches[0].sources]
         self.batches[0].sources.extend(sources)
 
     def get_sources(self):
@@ -394,7 +389,7 @@ class Executor:
         for s in self.get_all_sources():
             if s.missing():
                 msg = "Source `%s' not found, needed by target `%s'."
-                raise SCons.Errors.StopError, msg % (s, self.batches[0].targets[0])
+                raise SCons.Errors.StopError(msg % (s, self.batches[0].targets[0]))
 
     def add_pre_action(self, action):
         self.pre_actions.append(action)
@@ -406,9 +401,10 @@ class Executor:
 
     def my_str(self):
         env = self.get_build_env()
-        get = lambda action, t=self.get_all_targets(), s=self.get_all_sources(), e=env: \
-                     action.genstring(t, s, e)
-        return string.join(map(get, self.get_action_list()), "\n")
+        return "\n".join([action.genstring(self.get_all_targets(),
+                                           self.get_all_sources(),
+                                           env)
+                          for action in self.get_action_list()])
 
 
     def __str__(self):
@@ -417,7 +413,7 @@ class Executor:
     def nullify(self):
         self.cleanup()
         self.do_execute = self.do_nothing
-        self.my_str     = lambda S=self: ''
+        self.my_str     = lambda: ''
 
     memoizer_counters.append(SCons.Memoize.CountValue('get_contents'))
 
@@ -431,9 +427,10 @@ class Executor:
         except KeyError:
             pass
         env = self.get_build_env()
-        get = lambda action, t=self.get_all_targets(), s=self.get_all_sources(), e=env: \
-                     action.get_contents(t, s, e)
-        result = string.join(map(get, self.get_action_list()), "")
+        result = "".join([action.get_contents(self.get_all_targets(),
+                                              self.get_all_sources(),
+                                              env)
+                          for action in self.get_action_list()])
         self._memo['get_contents'] = result
         return result
 
@@ -521,7 +518,7 @@ class Executor:
             idict = {}
             for i in ignore:
                 idict[i] = 1
-            sourcelist = filter(lambda s, i=idict: not i.has_key(s), sourcelist)
+            sourcelist = [s for s in sourcelist if s not in idict]
 
         memo_dict[key] = sourcelist
 
@@ -547,7 +544,7 @@ def GetBatchExecutor(key):
     return _batch_executors[key]
 
 def AddBatchExecutor(key, executor):
-    assert not _batch_executors.has_key(key)
+    assert key not in _batch_executors
     _batch_executors[key] = executor
 
 nullenv = None
@@ -569,7 +566,7 @@ def get_NullEnvironment():
         nullenv = NullEnvironment()
     return nullenv
 
-class Null:
+class Null(object):
     """A null Executor, with a null build Environment, that does
     nothing when the rest of the methods call it.
 
diff --git a/engine/SCons/Job.py b/engine/SCons/Job.py
index e3d7f0f..bbf1def 100644
--- a/engine/SCons/Job.py
+++ b/engine/SCons/Job.py
@@ -29,7 +29,9 @@ stop, and wait on jobs.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Job.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Job.py 5023 2010/06/14 22:05:46 scons"
+
+import SCons.compat
 
 import os
 import signal
@@ -50,7 +52,7 @@ default_stack_size = 256
 interrupt_msg = 'Build interrupted.'
 
 
-class InterruptState:
+class InterruptState(object):
    def __init__(self):
        self.interrupted = False
 
@@ -61,7 +63,7 @@ class InterruptState:
        return self.interrupted
 
 
-class Jobs:
+class Jobs(object):
     """An instance of this class initializes N jobs, and provides
     methods for starting, stopping, and waiting on all N jobs.
     """
@@ -127,7 +129,7 @@ class Jobs:
         turns out that it very difficult to stop the build process
         by throwing asynchronously an exception such as
         KeyboardInterrupt. For example, the python Condition
-        variables (threading.Condition) and Queue's do not seem to
+        variables (threading.Condition) and queue's do not seem to
         asynchronous-exception-safe. It would require adding a whole
         bunch of try/finally block and except KeyboardInterrupt all
         over the place.
@@ -161,7 +163,7 @@ class Jobs:
         except AttributeError:
             pass
 
-class Serial:
+class Serial(object):
     """This class is used to execute tasks in series, and is more efficient
     than Parallel, but is only appropriate for non-parallel builds. Only
     one instance of this class should be in existence at a time.
@@ -187,7 +189,7 @@ class Serial:
         fails to execute (i.e. execute() raises an exception), then the job will
         stop."""
         
-        while 1:
+        while True:
             task = self.taskmaster.next_task()
 
             if task is None:
@@ -221,7 +223,7 @@ class Serial:
 # Parallel class (and its dependent classes) will work if the interpreter
 # doesn't support threads.
 try:
-    import Queue
+    import queue
     import threading
 except ImportError:
     pass
@@ -240,7 +242,7 @@ else:
             self.start()
 
         def run(self):
-            while 1:
+            while True:
                 task = self.requestQueue.get()
 
                 if task is None:
@@ -262,7 +264,7 @@ else:
 
                 self.resultsQueue.put((task, ok))
 
-    class ThreadPool:
+    class ThreadPool(object):
         """This class is responsible for spawning and managing worker threads."""
 
         def __init__(self, num, stack_size, interrupted):
@@ -271,8 +273,8 @@ else:
             One must specify the stack size of the worker threads. The
             stack size is specified in kilobytes.
             """
-            self.requestQueue = Queue.Queue(0)
-            self.resultsQueue = Queue.Queue(0)
+            self.requestQueue = queue.Queue(0)
+            self.resultsQueue = queue.Queue(0)
 
             try:
                 prev_size = threading.stack_size(stack_size*1024) 
@@ -293,9 +295,7 @@ else:
                 worker = Worker(self.requestQueue, self.resultsQueue, interrupted)
                 self.workers.append(worker)
 
-            # Once we drop Python 1.5 we can change the following to:
-            #if 'prev_size' in locals():
-            if 'prev_size' in locals().keys():
+            if 'prev_size' in locals():
                 threading.stack_size(prev_size)
 
         def put(self, task):
@@ -338,7 +338,7 @@ else:
                 worker.join(1.0)
             self.workers = []
 
-    class Parallel:
+    class Parallel(object):
         """This class is used to execute tasks in parallel, and is somewhat 
         less efficient than Serial, but is appropriate for parallel builds.
 
@@ -374,7 +374,7 @@ else:
 
             jobs = 0
             
-            while 1:
+            while True:
                 # Start up as many available tasks as we're
                 # allowed to.
                 while jobs < self.maxjobs:
@@ -402,7 +402,7 @@ else:
 
                 # Let any/all completed tasks finish up before we go
                 # back and put the next batch of tasks on the queue.
-                while 1:
+                while True:
                     task, ok = self.tp.get()
                     jobs = jobs - 1
 
diff --git a/engine/SCons/Memoize.py b/engine/SCons/Memoize.py
index 5d9f01c..6be415b 100644
--- a/engine/SCons/Memoize.py
+++ b/engine/SCons/Memoize.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Memoize.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Memoize.py 5023 2010/06/14 22:05:46 scons"
 
 __doc__ = """Memoizer
 
@@ -119,14 +119,14 @@ This collected caching logic nicely, but had two drawbacks:
     to figure out how to optimize the underlying methods.
 """
 
-import new
+import types
 
 # A flag controlling whether or not we actually use memoization.
 use_memoizer = None
 
 CounterList = []
 
-class Counter:
+class Counter(object):
     """
     Base class for counting memoization hits and misses.
 
@@ -165,11 +165,11 @@ class CountValue(Counter):
     """
     def __call__(self, *args, **kw):
         obj = args[0]
-        if obj._memo.has_key(self.method_name):
+        if self.method_name in obj._memo:
             self.hit = self.hit + 1
         else:
             self.miss = self.miss + 1
-        return apply(self.underlying_method, args, kw)
+        return self.underlying_method(*args, **kw)
 
 class CountDict(Counter):
     """
@@ -199,91 +199,43 @@ class CountDict(Counter):
         except KeyError:
             self.miss = self.miss + 1
         else:
-            key = apply(self.keymaker, args, kw)
-            if memo_dict.has_key(key):
+            key = self.keymaker(*args, **kw)
+            if key in memo_dict:
                 self.hit = self.hit + 1
             else:
                 self.miss = self.miss + 1
-        return apply(self.underlying_method, args, kw)
+        return self.underlying_method(*args, **kw)
 
-class Memoizer:
+class Memoizer(object):
     """Object which performs caching of method calls for its 'primary'
     instance."""
 
     def __init__(self):
         pass
 
-# Find out if we support metaclasses (Python 2.2 and later).
+def Dump(title=None):
+    if title:
+        print title
+    CounterList.sort()
+    for counter in CounterList:
+        counter.display()
 
-class M:
+class Memoized_Metaclass(type):
     def __init__(cls, name, bases, cls_dict):
-        cls.use_metaclass = 1
-        def fake_method(self):
-            pass
-        new.instancemethod(fake_method, None, cls)
-
-try:
-    class A:
-        __metaclass__ = M
-
-    use_metaclass = A.use_metaclass
-except AttributeError:
-    use_metaclass = None
-    reason = 'no metaclasses'
-except TypeError:
-    use_metaclass = None
-    reason = 'new.instancemethod() bug'
-else:
-    del A
-
-del M
-
-if not use_metaclass:
-
-    def Dump(title):
-        pass
+        super(Memoized_Metaclass, cls).__init__(name, bases, cls_dict)
+
+        for counter in cls_dict.get('memoizer_counters', []):
+            method_name = counter.method_name
+
+            counter.name = cls.__name__ + '.' + method_name
+            counter.underlying_method = cls_dict[method_name]
+
+            replacement_method = types.MethodType(counter, None, cls)
+            setattr(cls, method_name, replacement_method)
 
-    try:
-        class Memoized_Metaclass(type):
-            # Just a place-holder so pre-metaclass Python versions don't
-            # have to have special code for the Memoized classes.
-            pass
-    except TypeError:
-        class Memoized_Metaclass:
-            # A place-holder so pre-metaclass Python versions don't
-            # have to have special code for the Memoized classes.
-            pass
-
-    def EnableMemoization():
-        import SCons.Warnings
-        msg = 'memoization is not supported in this version of Python (%s)'
-        raise SCons.Warnings.NoMetaclassSupportWarning, msg % reason
-
-else:
-
-    def Dump(title=None):
-        if title:
-            print title
-        CounterList.sort()
-        for counter in CounterList:
-            counter.display()
-
-    class Memoized_Metaclass(type):
-        def __init__(cls, name, bases, cls_dict):
-            super(Memoized_Metaclass, cls).__init__(name, bases, cls_dict)
-
-            for counter in cls_dict.get('memoizer_counters', []):
-                method_name = counter.method_name
-
-                counter.name = cls.__name__ + '.' + method_name
-                counter.underlying_method = cls_dict[method_name]
-
-                replacement_method = new.instancemethod(counter, None, cls)
-                setattr(cls, method_name, replacement_method)
-
-    def EnableMemoization():
-        global use_memoizer
-        use_memoizer = 1
+def EnableMemoization():
+    global use_memoizer
+    use_memoizer = 1
 
 # Local Variables:
 # tab-width:4
diff --git a/engine/SCons/Node/Alias.py b/engine/SCons/Node/Alias.py
index ff4a47e..291ac4d 100644
--- a/engine/SCons/Node/Alias.py
+++ b/engine/SCons/Node/Alias.py
@@ -30,23 +30,22 @@ This creates a hash of global Aliases (dummy targets).
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Node/Alias.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Node/Alias.py 5023 2010/06/14 22:05:46 scons"
 
-import string
-import UserDict
+import collections
 
 import SCons.Errors
 import SCons.Node
 import SCons.Util
 
-class AliasNameSpace(UserDict.UserDict):
+class AliasNameSpace(collections.UserDict):
     def Alias(self, name, **kw):
         if isinstance(name, SCons.Node.Alias.Alias):
             return name
         try:
             a = self[name]
         except KeyError:
-            a = apply(SCons.Node.Alias.Alias, (name,), kw)
+            a = SCons.Node.Alias.Alias(name, **kw)
             self[name] = a
         return a
 
@@ -95,8 +94,8 @@ class Alias(SCons.Node.Node):
     def get_contents(self):
         """The contents of an alias is the concatenation
         of the content signatures of all its sources."""
-        childsigs = map(lambda n: n.get_csig(), self.children())
-        return string.join(childsigs, '')
+        childsigs = [n.get_csig() for n in self.children()]
+        return ''.join(childsigs)
 
     def sconsign(self):
         """An Alias is not recorded in .sconsign files"""
diff --git a/engine/SCons/Node/FS.py b/engine/SCons/Node/FS.py
index 10641e9..9298d98 100644
--- a/engine/SCons/Node/FS.py
+++ b/engine/SCons/Node/FS.py
@@ -31,73 +31,17 @@ that can be used by scripts or modules looking for the canonical default.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Node/FS.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Node/FS.py 5023 2010/06/14 22:05:46 scons"
 
-from itertools import izip
-import cStringIO
 import fnmatch
 import os
-import os.path
 import re
 import shutil
 import stat
-import string
 import sys
 import time
-
-try:
-    import codecs
-except ImportError:
-    pass
-else:
-    # TODO(2.2):  Remove when 2.3 becomes the minimal supported version.
-    try:
-        codecs.BOM_UTF8
-    except AttributeError:
-        codecs.BOM_UTF8 = '\xef\xbb\xbf'
-    try:
-        codecs.BOM_UTF16_LE
-        codecs.BOM_UTF16_BE
-    except AttributeError:
-        codecs.BOM_UTF16_LE = '\xff\xfe'
-        codecs.BOM_UTF16_BE = '\xfe\xff'
-
-    # Provide a wrapper function to handle decoding differences in
-    # different versions of Python.  Normally, we'd try to do this in the
-    # compat layer (and maybe it still makes sense to move there?) but
-    # that doesn't provide a way to supply the string class used in
-    # pre-2.3 Python versions with a .decode() method that all strings
-    # naturally have.  Plus, the 2.[01] encodings behave differently
-    # enough that we have to settle for a lowest-common-denominator
-    # wrapper approach.
-    #
-    # Note that the 2.[012] implementations below may be inefficient
-    # because they perform an explicit look up of the encoding for every
-    # decode, but they're old enough (and we want to stop supporting
-    # them soon enough) that it's not worth complicating the interface.
-    # Think of it as additional incentive for people to upgrade...
-    try:
-        ''.decode
-    except AttributeError:
-        # 2.0 through 2.2:  strings have no .decode() method
-        try:
-            codecs.lookup('ascii').decode
-        except AttributeError:
-            # 2.0 and 2.1:  encodings are a tuple of functions, and the
-            # decode() function returns a (result, length) tuple.
-            def my_decode(contents, encoding):
-                return codecs.lookup(encoding)[1](contents)[0]
-        else:
-            # 2.2:  encodings are an object with methods, and the
-            # .decode() method returns just the decoded bytes.
-            def my_decode(contents, encoding):
-                return codecs.lookup(encoding).decode(contents)
-    else:
-        # 2.3 or later:  use the .decode() string method
-        def my_decode(contents, encoding):
-            return contents.decode(encoding)
+import codecs
 
 import SCons.Action
 from SCons.Debug import logInstanceCreation
@@ -256,11 +200,11 @@ def set_duplicate(duplicate):
     }
 
     if not duplicate in Valid_Duplicates:
-        raise SCons.Errors.InternalError, ("The argument of set_duplicate "
+        raise SCons.Errors.InternalError("The argument of set_duplicate "
                                            "should be in Valid_Duplicates")
     global Link_Funcs
     Link_Funcs = []
-    for func in string.split(duplicate,'-'):
+    for func in duplicate.split('-'):
         if link_dict[func]:
             Link_Funcs.append(link_dict[func])
 
@@ -334,7 +278,7 @@ def get_MkdirBuilder():
                                              name = "MkdirBuilder")
     return MkdirBuilder
 
-class _Null:
+class _Null(object):
     pass
 
 _null = _Null()
@@ -373,25 +317,23 @@ if os.path.normcase("TeSt") == os.path.normpath("TeSt") and not _is_cygwin:
         return x
 else:
     def _my_normcase(x):
-        return string.upper(x)
+        return x.upper()
 
 
 
-class DiskChecker:
+class DiskChecker(object):
     def __init__(self, type, do, ignore):
         self.type = type
         self.do = do
         self.ignore = ignore
-        self.set_do()
-    def set_do(self):
-        self.__call__ = self.do
-    def set_ignore(self):
-        self.__call__ = self.ignore
+        self.func = do
+    def __call__(self, *args, **kw):
+        return self.func(*args, **kw)
     def set(self, list):
         if self.type in list:
-            self.set_do()
+            self.func = self.do
         else:
-            self.set_ignore()
+            self.func = self.ignore
 
 def do_diskcheck_match(node, predicate, errorfmt):
     result = predicate()
@@ -407,7 +349,7 @@ def do_diskcheck_match(node, predicate, errorfmt):
     except (AttributeError, KeyError):
         pass
     if result:
-        raise TypeError, errorfmt % node.abspath
+        raise TypeError(errorfmt % node.abspath)
 
 def ignore_diskcheck_match(node, predicate, errorfmt):
     pass
@@ -459,11 +401,14 @@ def set_diskcheck(list):
         dc.set(list)
 
 def diskcheck_types():
-    return map(lambda dc: dc.type, diskcheckers)
+    return [dc.type for dc in diskcheckers]
 
 
 
 class EntryProxy(SCons.Util.Proxy):
+
+    __str__ = SCons.Util.Delegate('__str__')
+
     def __get_abspath(self):
         entry = self.get()
         return SCons.Subst.SpecialAttrWrapper(entry.get_abspath(),
@@ -497,7 +442,7 @@ class EntryProxy(SCons.Util.Proxy):
             return self
         else:
             entry = self.get()
-            r = string.replace(entry.get_path(), os.sep, '/')
+            r = entry.get_path().replace(os.sep, '/')
             return SCons.Subst.SpecialAttrWrapper(r, entry.name + "_posix")
 
     def __get_windows_path(self):
@@ -507,7 +452,7 @@ class EntryProxy(SCons.Util.Proxy):
             return self
         else:
             entry = self.get()
-            r = string.replace(entry.get_path(), os.sep, '\\')
+            r = entry.get_path().replace(os.sep, '\\')
             return SCons.Subst.SpecialAttrWrapper(r, entry.name + "_windows")
 
     def __get_srcnode(self):
@@ -620,8 +565,8 @@ class Base(SCons.Node.Node):
         """
         if isinstance(self, klass) or klass is Entry:
             return
-        raise TypeError, "Tried to lookup %s '%s' as a %s." %\
-              (self.__class__.__name__, self.path, klass.__name__)
+        raise TypeError("Tried to lookup %s '%s' as a %s." %\
+              (self.__class__.__name__, self.path, klass.__name__))
 
     def get_dir(self):
         return self.dir
@@ -647,7 +592,7 @@ class Base(SCons.Node.Node):
             return self._memo['_save_str']
         except KeyError:
             pass
-        result = intern(self._get_str())
+        result = sys.intern(self._get_str())
         self._memo['_save_str'] = result
         return result
 
@@ -753,8 +698,8 @@ class Base(SCons.Node.Node):
         try: i = path_elems.index(dir)
         except ValueError: pass
         else: path_elems = path_elems[i+1:]
-        path_elems = map(lambda n: n.name, path_elems)
-        return string.join(path_elems, os.sep)
+        path_elems = [n.name for n in path_elems]
+        return os.sep.join(path_elems)
 
     def set_src_builder(self, builder):
         """Set the source code builder for this node."""
@@ -911,7 +856,7 @@ class Entry(Base):
                 self._morph()
             elif must_exist:
                 msg = "No such file or directory: '%s'" % self.abspath
-                raise SCons.Errors.UserError, msg
+                raise SCons.Errors.UserError(msg)
             else:
                 self.__class__ = File
                 self._morph()
@@ -990,7 +935,7 @@ class Entry(Base):
     def rel_path(self, other):
         d = self.disambiguate()
         if d.__class__ is Entry:
-            raise "rel_path() could not disambiguate File/Dir"
+            raise Exception("rel_path() could not disambiguate File/Dir")
         return d.rel_path(other)
 
     def new_ninfo(self):
@@ -1010,7 +955,7 @@ class Entry(Base):
 _classEntry = Entry
 
 
-class LocalFS:
+class LocalFS(object):
 
     if SCons.Memoize.use_memoizer:
         __metaclass__ = SCons.Memoize.Memoized_Metaclass
@@ -1249,7 +1194,7 @@ class FS(LocalFS):
             root = directory.root
 
         if os.sep != '/':
-            p = string.replace(p, os.sep, '/')
+            p = p.replace(os.sep, '/')
         return root._lookup_abs(p, fsclass, create)
 
     def Entry(self, name, directory = None, create = 1):
@@ -1294,11 +1239,11 @@ class FS(LocalFS):
         if not isinstance(variant_dir, SCons.Node.Node):
             variant_dir = self.Dir(variant_dir)
         if src_dir.is_under(variant_dir):
-            raise SCons.Errors.UserError, "Source directory cannot be under variant directory."
+            raise SCons.Errors.UserError("Source directory cannot be under variant directory.")
         if variant_dir.srcdir:
             if variant_dir.srcdir == src_dir:
                 return # We already did this.
-            raise SCons.Errors.UserError, "'%s' already has a source directory: '%s'."%(variant_dir, variant_dir.srcdir)
+            raise SCons.Errors.UserError("'%s' already has a source directory: '%s'."%(variant_dir, variant_dir.srcdir))
         variant_dir.link(src_dir, duplicate)
 
     def Repository(self, *dirs):
@@ -1327,12 +1272,12 @@ class FS(LocalFS):
                 if start_dir.is_under(bd):
                     # If already in the build-dir location, don't reflect
                     return [orig], fmt % str(orig)
-                p = apply(os.path.join, [bd.path] + tail)
+                p = os.path.join(bd.path, *tail)
                 targets.append(self.Entry(p))
             tail = [dir.name] + tail
             dir = dir.up()
         if targets:
-            message = fmt % string.join(map(str, targets))
+            message = fmt % ' '.join(map(str, targets))
         return targets, message
 
     def Glob(self, pathname, ondisk=True, source=True, strings=False, cwd=None):
@@ -1574,9 +1519,9 @@ class Dir(Base):
             i = self.path_elements.index(other) + 1
 
             path_elems = ['..'] * (len(self.path_elements) - i) \
-                         + map(lambda n: n.name, other.path_elements[i:])
+                         + [n.name for n in other.path_elements[i:]]
              
-            result = string.join(path_elems, os.sep)
+            result = os.sep.join(path_elems)
 
         memo_dict[other] = result
 
@@ -1622,7 +1567,7 @@ class Dir(Base):
         """A null "builder" for directories."""
         global MkdirBuilder
         if self.builder is not MkdirBuilder:
-            apply(SCons.Node.Node.build, [self,], kw)
+            SCons.Node.Node.build(self, **kw)
 
     #
     #
@@ -1641,7 +1586,7 @@ class Dir(Base):
             if p is None:
                 # Don't use while: - else: for this condition because
                 # if so, then parent is None and has no .path attribute.
-                raise SCons.Errors.StopError, parent.path
+                raise SCons.Errors.StopError(parent.path)
             parent = p
         listDirs.reverse()
         for dirnode in listDirs:
@@ -1682,12 +1627,9 @@ class Dir(Base):
         """Return content signatures and names of all our children
         separated by new-lines. Ensure that the nodes are sorted."""
         contents = []
-        name_cmp = lambda a, b: cmp(a.name, b.name)
-        sorted_children = self.children()[:]
-        sorted_children.sort(name_cmp)
-        for node in sorted_children:
+        for node in sorted(self.children(), key=lambda t: t.name):
             contents.append('%s %s\n' % (node.get_csig(), node.name))
-        return string.join(contents, '')
+        return ''.join(contents)
 
     def get_csig(self):
         """Compute the content signature for Directory nodes. In
@@ -1783,7 +1725,7 @@ class Dir(Base):
                 d[name] = result
             return result
         else:
-            return d.has_key(name)
+            return name in d
 
     memoizer_counters.append(SCons.Memoize.CountValue('srcdir_list'))
 
@@ -1911,12 +1853,11 @@ class Dir(Base):
         in any way (or ignored, passing None is common).
         """
         entries = self.entries
-        names = entries.keys()
+        names = list(entries.keys())
         names.remove('.')
         names.remove('..')
         func(arg, self, names)
-        select_dirs = lambda n, e=entries: isinstance(e[n], Dir)
-        for dirname in filter(select_dirs, names):
+        for dirname in [n for n in names if isinstance(entries[n], Dir)]:
             entries[dirname].walk(func, arg)
 
     def glob(self, pathname, ondisk=True, source=False, strings=False):
@@ -1953,9 +1894,8 @@ class Dir(Base):
         """
         dirname, basename = os.path.split(pathname)
         if not dirname:
-            result = self._glob1(basename, ondisk, source, strings)
-            result.sort(lambda a, b: cmp(str(a), str(b)))
-            return result
+            return sorted(self._glob1(basename, ondisk, source, strings),
+                          key=lambda t: str(t))
         if has_glob_magic(dirname):
             list = self.glob(dirname, ondisk, source, strings=False)
         else:
@@ -1964,10 +1904,9 @@ class Dir(Base):
         for dir in list:
             r = dir._glob1(basename, ondisk, source, strings)
             if strings:
-                r = map(lambda x, d=str(dir): os.path.join(d, x), r)
+                r = [os.path.join(str(dir), x) for x in r]
             result.extend(r)
-        result.sort(lambda a, b: cmp(str(a), str(b)))
-        return result
+        return sorted(result, key=lambda a: str(a))
 
     def _glob1(self, pattern, ondisk=True, source=False, strings=False):
         """
@@ -1990,9 +1929,8 @@ class Dir(Base):
             # We use the .name attribute from the Node because the keys of
             # the dir.entries dictionary are normalized (that is, all upper
             # case) on case-insensitive systems like Windows.
-            #node_names = [ v.name for k, v in dir.entries.items() if k not in ('.', '..') ]
-            entry_names = filter(lambda n: n not in ('.', '..'), dir.entries.keys())
-            node_names = map(lambda n, e=dir.entries: e[n].name, entry_names)
+            node_names = [ v.name for k, v in dir.entries.items()
+                           if k not in ('.', '..') ]
             names.extend(node_names)
             if not strings:
                 # Make sure the working directory (self) actually has
@@ -2015,7 +1953,7 @@ class Dir(Base):
                     # after we exit this loop.
                     if pattern[0] != '.':
                         #disk_names = [ d for d in disk_names if d[0] != '.' ]
-                        disk_names = filter(lambda x: x[0] != '.', disk_names)
+                        disk_names = [x for x in disk_names if x[0] != '.']
                     disk_names = fnmatch.filter(disk_names, pattern)
                     dirEntry = dir.Entry
                     for name in disk_names:
@@ -2031,14 +1969,14 @@ class Dir(Base):
         names = set(names)
         if pattern[0] != '.':
             #names = [ n for n in names if n[0] != '.' ]
-            names = filter(lambda x: x[0] != '.', names)
+            names = [x for x in names if x[0] != '.']
         names = fnmatch.filter(names, pattern)
 
         if strings:
             return names
 
         #return [ self.entries[_my_normcase(n)] for n in names ]
-        return map(lambda n, e=self.entries:  e[_my_normcase(n)], names)
+        return [self.entries[_my_normcase(n)] for n in names]
 
 class RootDir(Dir):
     """A class for the root directory of a file system.
@@ -2111,7 +2049,7 @@ class RootDir(Dir):
         except KeyError:
             if not create:
                 msg = "No such file or directory: '%s' in '%s' (and create is False)" % (p, str(self))
-                raise SCons.Errors.UserError, msg
+                raise SCons.Errors.UserError(msg)
             # There is no Node for this path name, and we're allowed
             # to create it.
             dir_name, file_name = os.path.split(p)
@@ -2200,7 +2138,7 @@ class FileBuildInfo(SCons.Node.BuildInfoBase):
                 except AttributeError:
                     s = str(n)
                 else:
-                    s = string.replace(s, os.sep, '/')
+                    s = s.replace(os.sep, '/')
                 return s
         for attr in ['bsources', 'bdepends', 'bimplicit']:
             try:
@@ -2208,7 +2146,7 @@ class FileBuildInfo(SCons.Node.BuildInfoBase):
             except AttributeError:
                 pass
             else:
-                setattr(self, attr, map(node_to_str, val))
+                setattr(self, attr, list(map(node_to_str, val)))
     def convert_from_sconsign(self, dir, name):
         """
         Converts a newly-read FileBuildInfo object for in-SCons use
@@ -2238,7 +2176,7 @@ class FileBuildInfo(SCons.Node.BuildInfoBase):
             except AttributeError:
                 continue
             nodes = []
-            for s, ni in izip(strings, nodeinfos):
+            for s, ni in zip(strings, nodeinfos):
                 if not isinstance(s, SCons.Node.Node):
                     s = ni.str_to_node(s)
                 nodes.append(s)
@@ -2247,11 +2185,11 @@ class FileBuildInfo(SCons.Node.BuildInfoBase):
         result = []
         bkids = self.bsources + self.bdepends + self.bimplicit
         bkidsigs = self.bsourcesigs + self.bdependsigs + self.bimplicitsigs
-        for bkid, bkidsig in izip(bkids, bkidsigs):
+        for bkid, bkidsig in zip(bkids, bkidsigs):
             result.append(str(bkid) + ': ' +
-                          string.join(bkidsig.format(names=names), ' '))
+                          ' '.join(bkidsig.format(names=names)))
         result.append('%s [%s]' % (self.bactsig, self.bact))
-        return string.join(result, '\n')
+        return '\n'.join(result)
 
 class File(Base):
     """A class for files in a file system.
@@ -2286,9 +2224,7 @@ class File(Base):
     def Dirs(self, pathlist):
         """Create a list of directories relative to the SConscript
         directory of this file."""
-        # TODO(1.5)
-        # return [self.Dir(p) for p in pathlist]
-        return map(lambda p, s=self: s.Dir(p), pathlist)
+        return [self.Dir(p) for p in pathlist]
 
     def File(self, name):
         """Create a file node named 'name' relative to
@@ -2336,38 +2272,24 @@ class File(Base):
             raise
         return contents
 
-    try:
-        import codecs
-    except ImportError:
-        get_text_contents = get_contents
-    else:
-        # This attempts to figure out what the encoding of the text is
-        # based upon the BOM bytes, and then decodes the contents so that
-        # it's a valid python string.
-        def get_text_contents(self):
-            contents = self.get_contents()
-            # The behavior of various decode() methods and functions
-            # w.r.t. the initial BOM bytes is different for different
-            # encodings and/or Python versions.  ('utf-8' does not strip
-            # them, but has a 'utf-8-sig' which does; 'utf-16' seems to
-            # strip them; etc.)  Just side step all the complication by
-            # explicitly stripping the BOM before we decode().
-            if contents.startswith(codecs.BOM_UTF8):
-                contents = contents[len(codecs.BOM_UTF8):]
-                # TODO(2.2):  Remove when 2.3 becomes floor.
-                #contents = contents.decode('utf-8')
-                contents = my_decode(contents, 'utf-8')
-            elif contents.startswith(codecs.BOM_UTF16_LE):
-                contents = contents[len(codecs.BOM_UTF16_LE):]
-                # TODO(2.2):  Remove when 2.3 becomes floor.
-                #contents = contents.decode('utf-16-le')
-                contents = my_decode(contents, 'utf-16-le')
-            elif contents.startswith(codecs.BOM_UTF16_BE):
-                contents = contents[len(codecs.BOM_UTF16_BE):]
-                # TODO(2.2):  Remove when 2.3 becomes floor.
-                #contents = contents.decode('utf-16-be')
-                contents = my_decode(contents, 'utf-16-be')
-            return contents
+    # This attempts to figure out what the encoding of the text is
+    # based upon the BOM bytes, and then decodes the contents so that
+    # it's a valid python string.
+    def get_text_contents(self):
+        contents = self.get_contents()
+        # The behavior of various decode() methods and functions
+        # w.r.t. the initial BOM bytes is different for different
+        # encodings and/or Python versions.  ('utf-8' does not strip
+        # them, but has a 'utf-8-sig' which does; 'utf-16' seems to
+        # strip them; etc.)  Just sidestep all the complication by
+        # explicitly stripping the BOM before we decode().
+        if contents.startswith(codecs.BOM_UTF8):
+            return contents[len(codecs.BOM_UTF8):].decode('utf-8')
+        if contents.startswith(codecs.BOM_UTF16_LE):
+            return contents[len(codecs.BOM_UTF16_LE):].decode('utf-16-le')
+        if contents.startswith(codecs.BOM_UTF16_BE):
+            return contents[len(codecs.BOM_UTF16_BE):].decode('utf-16-be')
+        return contents
 
     def get_content_hash(self):
         """
@@ -2603,7 +2525,7 @@ class File(Base):
         if scanner:
             # result = [n.disambiguate() for n in scanner(self, env, path)]
             result = scanner(self, env, path)
-            result = map(lambda N: N.disambiguate(), result)
+            result = [N.disambiguate() for N in result]
         else:
             result = []
 
@@ -2741,7 +2663,7 @@ class File(Base):
                     self._createDir()
                 except SCons.Errors.StopError, drive:
                     desc = "No drive `%s' for target `%s'." % (drive, self)
-                    raise SCons.Errors.StopError, desc
+                    raise SCons.Errors.StopError(desc)
 
     #
     #
@@ -2760,7 +2682,7 @@ class File(Base):
         e = Link(self, src, None)
         if isinstance(e, SCons.Errors.BuildError):
             desc = "Cannot duplicate `%s' in `%s': %s." % (src.path, self.dir.path, e.errstr)
-            raise SCons.Errors.StopError, desc
+            raise SCons.Errors.StopError(desc)
         self.linked = 1
         # The Link() action may or may not have actually
         # created the file, depending on whether the -n
@@ -3019,7 +2941,7 @@ class File(Base):
         children = self.children()
         executor = self.get_executor()
         # sigs = [n.get_cachedir_csig() for n in children]
-        sigs = map(lambda n: n.get_cachedir_csig(), children)
+        sigs = [n.get_cachedir_csig() for n in children]
         sigs.append(SCons.Util.MD5signature(executor.get_contents()))
         sigs.append(self.path)
         result = self.cachesig = SCons.Util.MD5collect(sigs)
@@ -3034,7 +2956,7 @@ def get_default_fs():
         default_fs = FS()
     return default_fs
 
-class FileFinder:
+class FileFinder(object):
     """
     """
     if SCons.Memoize.use_memoizer:
@@ -3117,8 +3039,8 @@ class FileFinder:
         if verbose and not callable(verbose):
             if not SCons.Util.is_String(verbose):
                 verbose = "find_file"
-            verbose = '  %s: ' % verbose
-            verbose = lambda s, v=verbose: sys.stdout.write(v + s)
+            _verbose = u'  %s: ' % verbose
+            verbose = lambda s: sys.stdout.write(_verbose + s)
 
         filedir, filename = os.path.split(filename)
         if filedir:
@@ -3150,10 +3072,10 @@ class FileFinder:
             #    if isinstance(node, Dir) or isinstance(node, Entry):
             #        return node
             #    return None
-            #paths = filter(None, map(filedir_lookup, paths))
+            #paths = [_f for _f in map(filedir_lookup, paths) if _f]
 
             self.default_filedir = filedir
-            paths = filter(None, map(self.filedir_lookup, paths))
+            paths = [_f for _f in map(self.filedir_lookup, paths) if _f]
 
         result = None
         for dir in paths:
diff --git a/engine/SCons/Node/Python.py b/engine/SCons/Node/Python.py
index 53c2c80..be99d28 100644
--- a/engine/SCons/Node/Python.py
+++ b/engine/SCons/Node/Python.py
@@ -27,7 +27,7 @@ Python nodes.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Node/Python.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Node/Python.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Node
 
@@ -67,7 +67,7 @@ class Value(SCons.Node.Node):
 
     def build(self, **kw):
         if not hasattr(self, 'built_value'):
-            apply (SCons.Node.Node.build, (self,), kw)
+            SCons.Node.Node.build(self, **kw)
 
     is_up_to_date = SCons.Node.Node.children_are_up_to_date
 
diff --git a/engine/SCons/Node/__init__.py b/engine/SCons/Node/__init__.py
index b0570b0..8d15b58 100644
--- a/engine/SCons/Node/__init__.py
+++ b/engine/SCons/Node/__init__.py
@@ -40,14 +40,12 @@ be able to depend on any other type of "thing."
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Node/__init__.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Node/__init__.py 5023 2010/06/14 22:05:46 scons"
 
+import collections
 import copy
-from itertools import chain, izip
-import string
-import UserList
+from itertools import chain
 
 from SCons.Debug import logInstanceCreation
 import SCons.Executor
@@ -57,7 +55,7 @@ import SCons.Util
 from SCons.Debug import Trace
 
 def classname(obj):
-    return string.split(str(obj.__class__), '.')[-1]
+    return str(obj.__class__).split('.')[-1]
 
 # Node states
 #
@@ -99,7 +97,7 @@ Annotate = do_nothing
 
 # Classes for signature info for Nodes.
 
-class NodeInfoBase:
+class NodeInfoBase(object):
     """
     The generic base class for signature information for a Node.
 
@@ -107,7 +105,7 @@ class NodeInfoBase:
     logic for dealing with their own Node-specific signature information.
     """
     current_version_id = 1
-    def __init__(self, node):
+    def __init__(self, node=None):
         # Create an object attribute from the class attribute so it ends up
         # in the pickled data in the .sconsign file.
         self._version_id = self.current_version_id
@@ -136,8 +134,7 @@ class NodeInfoBase:
             try:
                 field_list = self.field_list
             except AttributeError:
-                field_list = self.__dict__.keys()
-                field_list.sort()
+                field_list = sorted(self.__dict__.keys())
         fields = []
         for field in field_list:
             try:
@@ -150,7 +147,7 @@ class NodeInfoBase:
             fields.append(f)
         return fields
 
-class BuildInfoBase:
+class BuildInfoBase(object):
     """
     The generic base class for build information for a Node.
 
@@ -161,7 +158,7 @@ class BuildInfoBase:
     implicit dependencies, and action information.
     """
     current_version_id = 1
-    def __init__(self, node):
+    def __init__(self, node=None):
         # Create an object attribute from the class attribute so it ends up
         # in the pickled data in the .sconsign file.
         self._version_id = self.current_version_id
@@ -172,7 +169,7 @@ class BuildInfoBase:
     def merge(self, other):
         self.__dict__.update(other.__dict__)
 
-class Node:
+class Node(object):
     """The base Node class, for entities that we know how to
     build, or use to build other Nodes.
     """
@@ -182,7 +179,7 @@ class Node:
 
     memoizer_counters = []
 
-    class Attrs:
+    class Attrs(object):
         pass
 
     def __init__(self):
@@ -351,12 +348,12 @@ class Node:
         for d in self.depends:
             if d.missing():
                 msg = "Explicit dependency `%s' not found, needed by target `%s'."
-                raise SCons.Errors.StopError, msg % (d, self)
+                raise SCons.Errors.StopError(msg % (d, self))
         if self.implicit is not None:
             for i in self.implicit:
                 if i.missing():
                     msg = "Implicit dependency `%s' not found, needed by target `%s'."
-                    raise SCons.Errors.StopError, msg % (i, self)
+                    raise SCons.Errors.StopError(msg % (i, self))
         self.binfo = self.get_binfo()
 
     def build(self, **kw):
@@ -372,7 +369,7 @@ class Node:
 
         """
         try:
-            apply(self.get_executor(), (self,), kw)
+            self.get_executor()(self, **kw)
         except SCons.Errors.BuildError, e:
             e.node = self
             raise
@@ -548,8 +545,7 @@ class Node:
         deps = []
         while nodes:
             n = nodes.pop(0)
-            d = filter(lambda x, seen=seen: not seen.has_key(x),
-                       n.get_found_includes(env, scanner, path))
+            d = [x for x in n.get_found_includes(env, scanner, path) if x not in seen]
             if d:
                 deps.extend(d)
                 for n in d:
@@ -832,7 +828,7 @@ class Node:
         except TypeError, e:
             e = e.args[0]
             if SCons.Util.is_List(e):
-                s = map(str, e)
+                s = list(map(str, e))
             else:
                 s = str(e)
             raise SCons.Errors.UserError("attempted to add a non-Node dependency to %s:\n\t%s is a %s, not a Node" % (str(self), s, type(e)))
@@ -849,7 +845,7 @@ class Node:
         except TypeError, e:
             e = e.args[0]
             if SCons.Util.is_List(e):
-                s = map(str, e)
+                s = list(map(str, e))
             else:
                 s = str(e)
             raise SCons.Errors.UserError("attempted to ignore a non-Node dependency of %s:\n\t%s is a %s, not a Node" % (str(self), s, type(e)))
@@ -863,7 +859,7 @@ class Node:
         except TypeError, e:
             e = e.args[0]
             if SCons.Util.is_List(e):
-                s = map(str, e)
+                s = list(map(str, e))
             else:
                 s = str(e)
             raise SCons.Errors.UserError("attempted to add a non-Node as source of %s:\n\t%s is a %s, not a Node" % (str(self), s, type(e)))
@@ -1053,7 +1049,7 @@ class Node:
             if t: Trace(': old %s new %s' % (len(then), len(children)))
             result = True
 
-        for child, prev_ni in izip(children, then):
+        for child, prev_ni in zip(children, then):
             if child.changed_since_last_build(self, prev_ni):
                 if t: Trace(': %s changed' % child)
                 result = True
@@ -1199,8 +1195,8 @@ class Node:
         new_bkids    = new.bsources    + new.bdepends    + new.bimplicit
         new_bkidsigs = new.bsourcesigs + new.bdependsigs + new.bimplicitsigs
 
-        osig = dict(izip(old_bkids, old_bkidsigs))
-        nsig = dict(izip(new_bkids, new_bkidsigs))
+        osig = dict(zip(old_bkids, old_bkidsigs))
+        nsig = dict(zip(new_bkids, new_bkidsigs))
 
         # The sources and dependencies we'll want to report are all stored
         # as relative paths to this target's directory, but we want to
@@ -1215,11 +1211,11 @@ class Node:
 
         lines = []
 
-        removed = filter(lambda x, nk=new_bkids: not x in nk, old_bkids)
+        removed = [x for x in old_bkids if not x in new_bkids]
         if removed:
-            removed = map(stringify, removed)
+            removed = list(map(stringify, removed))
             fmt = "`%s' is no longer a dependency\n"
-            lines.extend(map(lambda s, fmt=fmt: fmt % s, removed))
+            lines.extend([fmt % s for s in removed])
 
         for k in new_bkids:
             if not k in old_bkids:
@@ -1229,14 +1225,14 @@ class Node:
 
         if len(lines) == 0 and old_bkids != new_bkids:
             lines.append("the dependency order changed:\n" +
-                         "%sold: %s\n" % (' '*15, map(stringify, old_bkids)) +
-                         "%snew: %s\n" % (' '*15, map(stringify, new_bkids)))
+                         "%sold: %s\n" % (' '*15, list(map(stringify, old_bkids))) +
+                         "%snew: %s\n" % (' '*15, list(map(stringify, new_bkids))))
 
         if len(lines) == 0:
             def fmt_with_title(title, strlines):
-                lines = string.split(strlines, '\n')
+                lines = strlines.split('\n')
                 sep = '\n' + ' '*(15 + len(title))
-                return ' '*15 + title + string.join(lines, sep) + '\n'
+                return ' '*15 + title + sep.join(lines) + '\n'
             if old.bactsig != new.bactsig:
                 if old.bact == new.bact:
                     lines.append("the contents of the build action changed\n" +
@@ -1254,31 +1250,22 @@ class Node:
             return "%s %s"  % (preamble, lines[0])
         else:
             lines = ["%s:\n" % preamble] + lines
-            return string.join(lines, ' '*11)
-
-try:
-    [].extend(UserList.UserList([]))
-except TypeError:
-    # Python 1.5.2 doesn't allow a list to be extended by list-like
-    # objects (such as UserList instances), so just punt and use
-    # real lists.
-    def NodeList(l):
-        return l
-else:
-    class NodeList(UserList.UserList):
-        def __str__(self):
-            return str(map(str, self.data))
+            return ( ' '*11).join(lines)
+
+class NodeList(collections.UserList):
+    def __str__(self):
+        return str(list(map(str, self.data)))
 
 def get_children(node, parent): return node.children()
 def ignore_cycle(node, stack): pass
 def do_nothing(node, parent): pass
 
-class Walker:
+class Walker(object):
     """An iterator for walking a Node tree.
 
     This is depth-first, children are visited before the parent.
     The Walker object can be initialized with any node, and
-    returns the next node on the descent with each next() call.
+    returns the next node on the descent with each get_next() call.
     'kids_func' is an optional function that will be called to
     get the children of a node instead of calling 'children'.
     'cycle_func' is an optional function that will be called
@@ -1298,7 +1285,7 @@ class Walker:
         self.history = {} # used to efficiently detect and avoid cycles
         self.history[node] = None
 
-    def next(self):
+    def get_next(self):
         """Return the next node for this walk of the tree.
 
         This function is intentionally iterative, not recursive,
@@ -1310,7 +1297,7 @@ class Walker:
                 node = self.stack[-1].wkids.pop(0)
                 if not self.stack[-1].wkids:
                     self.stack[-1].wkids = None
-                if self.history.has_key(node):
+                if node in self.history:
                     self.cycle_func(node, self.stack)
                 else:
                     node.wkids = copy.copy(self.kids_func(node, self.stack[-1]))
diff --git a/engine/SCons/Options/BoolOption.py b/engine/SCons/Options/BoolOption.py
index f0db8c9..f066a49 100644
--- a/engine/SCons/Options/BoolOption.py
+++ b/engine/SCons/Options/BoolOption.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Options/BoolOption.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Options/BoolOption.py 5023 2010/06/14 22:05:46 scons"
 
 __doc__ = """Place-holder for the old SCons.Options module hierarchy
 
@@ -41,7 +41,7 @@ def BoolOption(*args, **kw):
         msg = "The BoolOption() function is deprecated; use the BoolVariable() function instead."
         SCons.Warnings.warn(SCons.Warnings.DeprecatedOptionsWarning, msg)
         warned = True
-    return apply(SCons.Variables.BoolVariable, args, kw)
+    return SCons.Variables.BoolVariable(*args, **kw)
 
 # Local Variables:
 # tab-width:4
diff --git a/engine/SCons/Options/EnumOption.py b/engine/SCons/Options/EnumOption.py
index 985cff9..b541108 100644
--- a/engine/SCons/Options/EnumOption.py
+++ b/engine/SCons/Options/EnumOption.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Options/EnumOption.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Options/EnumOption.py 5023 2010/06/14 22:05:46 scons"
 
 __doc__ = """Place-holder for the old SCons.Options module hierarchy
 
@@ -41,7 +41,7 @@ def EnumOption(*args, **kw):
         msg = "The EnumOption() function is deprecated; use the EnumVariable() function instead."
         SCons.Warnings.warn(SCons.Warnings.DeprecatedOptionsWarning, msg)
         warned = True
-    return apply(SCons.Variables.EnumVariable, args, kw)
+    return SCons.Variables.EnumVariable(*args, **kw)
 
 # Local Variables:
 # tab-width:4
diff --git a/engine/SCons/Options/ListOption.py b/engine/SCons/Options/ListOption.py
index 56c3196..abc98a4 100644
--- a/engine/SCons/Options/ListOption.py
+++ b/engine/SCons/Options/ListOption.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Options/ListOption.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Options/ListOption.py 5023 2010/06/14 22:05:46 scons"
 
 __doc__ = """Place-holder for the old SCons.Options module hierarchy
 
@@ -41,7 +41,7 @@ def ListOption(*args, **kw):
         msg = "The ListOption() function is deprecated; use the ListVariable() function instead."
         SCons.Warnings.warn(SCons.Warnings.DeprecatedOptionsWarning, msg)
         warned = True
-    return apply(SCons.Variables.ListVariable, args, kw)
+    return SCons.Variables.ListVariable(*args, **kw)
 
 # Local Variables:
 # tab-width:4
diff --git a/engine/SCons/Options/PackageOption.py b/engine/SCons/Options/PackageOption.py
index 597865b..db6cac9 100644
--- a/engine/SCons/Options/PackageOption.py
+++ b/engine/SCons/Options/PackageOption.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Options/PackageOption.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Options/PackageOption.py 5023 2010/06/14 22:05:46 scons"
 
 __doc__ = """Place-holder for the old SCons.Options module hierarchy
 
@@ -41,7 +41,7 @@ def PackageOption(*args, **kw):
         msg = "The PackageOption() function is deprecated; use the PackageVariable() function instead."
         SCons.Warnings.warn(SCons.Warnings.DeprecatedOptionsWarning, msg)
         warned = True
-    return apply(SCons.Variables.PackageVariable, args, kw)
+    return SCons.Variables.PackageVariable(*args, **kw)
 
 # Local Variables:
 # tab-width:4
diff --git a/engine/SCons/Options/PathOption.py b/engine/SCons/Options/PathOption.py
index 04d56c2..e31960d 100644
--- a/engine/SCons/Options/PathOption.py
+++ b/engine/SCons/Options/PathOption.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Options/PathOption.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Options/PathOption.py 5023 2010/06/14 22:05:46 scons"
 
 __doc__ = """Place-holder for the old SCons.Options module hierarchy
 
@@ -35,7 +35,7 @@ import SCons.Warnings
 
 warned = False
 
-class _PathOptionClass:
+class _PathOptionClass(object):
     def warn(self):
         global warned
         if not warned:
@@ -45,27 +45,27 @@ class _PathOptionClass:
 
     def __call__(self, *args, **kw):
         self.warn()
-        return apply(SCons.Variables.PathVariable, args, kw)
+        return SCons.Variables.PathVariable(*args, **kw)
 
     def PathAccept(self, *args, **kw):
         self.warn()
-        return apply(SCons.Variables.PathVariable.PathAccept, args, kw)
+        return SCons.Variables.PathVariable.PathAccept(*args, **kw)
 
     def PathIsDir(self, *args, **kw):
         self.warn()
-        return apply(SCons.Variables.PathVariable.PathIsDir, args, kw)
+        return SCons.Variables.PathVariable.PathIsDir(*args, **kw)
 
     def PathIsDirCreate(self, *args, **kw):
         self.warn()
-        return apply(SCons.Variables.PathVariable.PathIsDirCreate, args, kw)
+        return SCons.Variables.PathVariable.PathIsDirCreate(*args, **kw)
 
     def PathIsFile(self, *args, **kw):
         self.warn()
-        return apply(SCons.Variables.PathVariable.PathIsFile, args, kw)
+        return SCons.Variables.PathVariable.PathIsFile(*args, **kw)
 
     def PathExists(self, *args, **kw):
         self.warn()
-        return apply(SCons.Variables.PathVariable.PathExists, args, kw)
+        return SCons.Variables.PathVariable.PathExists(*args, **kw)
 
 PathOption = _PathOptionClass()
 
diff --git a/engine/SCons/Options/__init__.py b/engine/SCons/Options/__init__.py
index b4960b1..63de8ed 100644
--- a/engine/SCons/Options/__init__.py
+++ b/engine/SCons/Options/__init__.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Options/__init__.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Options/__init__.py 5023 2010/06/14 22:05:46 scons"
 
 __doc__ = """Place-holder for the old SCons.Options module hierarchy
 
@@ -48,24 +48,17 @@ class Options(SCons.Variables.Variables):
             msg = "The Options class is deprecated; use the Variables class instead."
             SCons.Warnings.warn(SCons.Warnings.DeprecatedOptionsWarning, msg)
             warned = True
-        apply(SCons.Variables.Variables.__init__,
-              (self,) + args,
-              kw)
+        SCons.Variables.Variables.__init__(self, *args, **kw)
 
     def AddOptions(self, *args, **kw):
-        return apply(SCons.Variables.Variables.AddVariables,
-                     (self,) + args,
-                     kw)
+        return SCons.Variables.Variables.AddVariables(self, *args, **kw)
 
     def UnknownOptions(self, *args, **kw):
-        return apply(SCons.Variables.Variables.UnknownVariables,
-                     (self,) + args,
-                     kw)
+        return SCons.Variables.Variables.UnknownVariables(self, *args, **kw)
 
     def FormatOptionHelpText(self, *args, **kw):
-        return apply(SCons.Variables.Variables.FormatVariableHelpText,
-                     (self,) + args,
-                     kw)
+        return SCons.Variables.Variables.FormatVariableHelpText(self, *args,
+                     **kw)
 
 # Local Variables:
 # tab-width:4
diff --git a/engine/SCons/PathList.py b/engine/SCons/PathList.py
index 307edd8..764b0b8 100644
--- a/engine/SCons/PathList.py
+++ b/engine/SCons/PathList.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/PathList.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/PathList.py 5023 2010/06/14 22:05:46 scons"
 
 __doc__ = """SCons.PathList
 
@@ -33,7 +33,6 @@ Do the Right Thing (almost) regardless of how the variable is specified.
 """
 
 import os
-import string
 
 import SCons.Memoize
 import SCons.Node
@@ -67,7 +66,7 @@ def node_conv(obj):
         result = get()
     return result
 
-class _PathList:
+class _PathList(object):
     """
     An actual PathList object.
     """
@@ -98,14 +97,14 @@ class _PathList:
         over and over for each target.
         """
         if SCons.Util.is_String(pathlist):
-            pathlist = string.split(pathlist, os.pathsep)
+            pathlist = pathlist.split(os.pathsep)
         elif not SCons.Util.is_Sequence(pathlist):
             pathlist = [pathlist]
 
         pl = []
         for p in pathlist:
             try:
-                index = string.find(p, '$')
+                index = p.find('$')
             except (AttributeError, TypeError):
                 type = TYPE_OBJECT
             else:
@@ -142,7 +141,7 @@ class _PathList:
         return tuple(result)
 
 
-class PathListCache:
+class PathListCache(object):
     """
     A class to handle caching of PathList lookups.
 
diff --git a/engine/SCons/Platform/__init__.py b/engine/SCons/Platform/__init__.py
index 33cad25..7e6288d 100644
--- a/engine/SCons/Platform/__init__.py
+++ b/engine/SCons/Platform/__init__.py
@@ -42,13 +42,12 @@ their own platform definition.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/__init__.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Platform/__init__.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.compat
 
 import imp
 import os
-import string
 import sys
 import tempfile
 
@@ -69,15 +68,15 @@ def platform_default():
     if osname == 'posix':
         if sys.platform == 'cygwin':
             return 'cygwin'
-        elif string.find(sys.platform, 'irix') != -1:
+        elif sys.platform.find('irix') != -1:
             return 'irix'
-        elif string.find(sys.platform, 'sunos') != -1:
+        elif sys.platform.find('sunos') != -1:
             return 'sunos'
-        elif string.find(sys.platform, 'hp-ux') != -1:
+        elif sys.platform.find('hp-ux') != -1:
             return 'hpux'
-        elif string.find(sys.platform, 'aix') != -1:
+        elif sys.platform.find('aix') != -1:
             return 'aix'
-        elif string.find(sys.platform, 'darwin') != -1:
+        elif sys.platform.find('darwin') != -1:
             return 'darwin'
         else:
             return 'posix'
@@ -94,7 +93,7 @@ def platform_module(name = platform_default()):
     our execution environment.
     """
     full_name = 'SCons.Platform.' + name
-    if not sys.modules.has_key(full_name):
+    if full_name not in sys.modules:
         if os.name == 'java':
             eval(full_name)
         else:
@@ -112,7 +111,7 @@ def platform_module(name = platform_default()):
                     importer = zipimport.zipimporter( sys.modules['SCons.Platform'].__path__[0] )
                     mod = importer.load_module(full_name)
                 except ImportError:
-                    raise SCons.Errors.UserError, "No platform named '%s'" % name
+                    raise SCons.Errors.UserError("No platform named '%s'" % name)
             setattr(SCons.Platform, name, mod)
     return sys.modules[full_name]
 
@@ -121,14 +120,18 @@ def DefaultToolList(platform, env):
     """
     return SCons.Tool.tool_list(platform, env)
 
-class PlatformSpec:
-    def __init__(self, name):
+class PlatformSpec(object):
+    def __init__(self, name, generate):
         self.name = name
+        self.generate = generate
+
+    def __call__(self, *args, **kw):
+        return self.generate(*args, **kw)
 
     def __str__(self):
         return self.name
         
-class TempFileMunge:
+class TempFileMunge(object):
     """A callable class.  You can set an Environment variable to this,
     then call it with a string argument, then it will perform temporary
     file substitution on it.  This is used to circumvent the long command
@@ -167,7 +170,10 @@ class TempFileMunge:
         except ValueError:
             maxline = 2048
 
-        if (reduce(lambda x, y: x + len(y), cmd, 0) + len(cmd)) <= maxline:
+        length = 0
+        for c in cmd:
+            length += len(c)
+        if length <= maxline:
             return self.cmd
 
         # We do a normpath because mktemp() has what appears to be
@@ -184,7 +190,7 @@ class TempFileMunge:
         if env['SHELL'] and env['SHELL'] == 'sh':
             # The sh shell will try to escape the backslashes in the
             # path, so unescape them.
-            native_tmp = string.replace(native_tmp, '\\', r'\\\\')
+            native_tmp = native_tmp.replace('\\', r'\\\\')
             # In Cygwin, we want to use rm to delete the temporary
             # file, because del does not exist in the sh shell.
             rm = env.Detect('rm') or 'del'
@@ -198,8 +204,8 @@ class TempFileMunge:
         if not prefix:
             prefix = '@'
 
-        args = map(SCons.Subst.quote_spaces, cmd[1:])
-        os.write(fd, string.join(args, " ") + "\n")
+        args = list(map(SCons.Subst.quote_spaces, cmd[1:]))
+        os.write(fd, " ".join(args) + "\n")
         os.close(fd)
         # XXX Using the SCons.Action.print_actions value directly
         # like this is bogus, but expedient.  This class should
@@ -218,15 +224,14 @@ class TempFileMunge:
         # reach into SCons.Action directly.
         if SCons.Action.print_actions:
             print("Using tempfile "+native_tmp+" for command line:\n"+
-                  str(cmd[0]) + " " + string.join(args," "))
+                  str(cmd[0]) + " " + " ".join(args))
         return [ cmd[0], prefix + native_tmp + '\n' + rm, native_tmp ]
     
 def Platform(name = platform_default()):
     """Select a canned Platform specification.
     """
     module = platform_module(name)
-    spec = PlatformSpec(name)
-    spec.__call__ = module.generate
+    spec = PlatformSpec(name, module.generate)
     return spec
 
 # Local Variables:
diff --git a/engine/SCons/Platform/aix.py b/engine/SCons/Platform/aix.py
index 039d3d4..e729bcb 100644
--- a/engine/SCons/Platform/aix.py
+++ b/engine/SCons/Platform/aix.py
@@ -30,10 +30,9 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/aix.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Platform/aix.py 5023 2010/06/14 22:05:46 scons"
 
 import os
-import string
 
 import posix
 
@@ -51,9 +50,9 @@ def get_xlc(env, xlc=None, xlc_r=None, packages=[]):
         cmd = "lslpp -fc " + package + " 2>/dev/null | egrep '" + xlc + "([^-_a-zA-Z0-9].*)?$'"
         line = os.popen(cmd).readline()
         if line:
-            v, p = string.split(line, ':')[1:3]
-            xlcVersion = string.split(v)[1]
-            xlcPath = string.split(p)[0]
+            v, p = line.split(':')[1:3]
+            xlcVersion = v.split()[1]
+            xlcPath = p.split()[0]
             xlcPath = xlcPath[:xlcPath.rindex('/')]
             break
     return (xlcPath, xlc, xlc_r, xlcVersion)
diff --git a/engine/SCons/Platform/cygwin.py b/engine/SCons/Platform/cygwin.py
index 0105ae9..854a2c5 100644
--- a/engine/SCons/Platform/cygwin.py
+++ b/engine/SCons/Platform/cygwin.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/cygwin.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Platform/cygwin.py 5023 2010/06/14 22:05:46 scons"
 
 import posix
 from SCons.Platform import TempFileMunge
diff --git a/engine/SCons/Platform/darwin.py b/engine/SCons/Platform/darwin.py
index 18c58f2..4d62517 100644
--- a/engine/SCons/Platform/darwin.py
+++ b/engine/SCons/Platform/darwin.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/darwin.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Platform/darwin.py 5023 2010/06/14 22:05:46 scons"
 
 import posix
 
diff --git a/engine/SCons/Platform/hpux.py b/engine/SCons/Platform/hpux.py
index d5ce3bb..4544dfb 100644
--- a/engine/SCons/Platform/hpux.py
+++ b/engine/SCons/Platform/hpux.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/hpux.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Platform/hpux.py 5023 2010/06/14 22:05:46 scons"
 
 import posix
 
diff --git a/engine/SCons/Platform/irix.py b/engine/SCons/Platform/irix.py
index 95df7eb..3daebf5 100644
--- a/engine/SCons/Platform/irix.py
+++ b/engine/SCons/Platform/irix.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/irix.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Platform/irix.py 5023 2010/06/14 22:05:46 scons"
 
 import posix
 
diff --git a/engine/SCons/Platform/os2.py b/engine/SCons/Platform/os2.py
index 973ac6b..e74a22c 100644
--- a/engine/SCons/Platform/os2.py
+++ b/engine/SCons/Platform/os2.py
@@ -30,11 +30,11 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/os2.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Platform/os2.py 5023 2010/06/14 22:05:46 scons"
 import win32
 
 def generate(env):
-    if not env.has_key('ENV'):
+    if 'ENV' not in env:
         env['ENV']        = {}
     env['OBJPREFIX']      = ''
     env['OBJSUFFIX']      = '.obj'
diff --git a/engine/SCons/Platform/posix.py b/engine/SCons/Platform/posix.py
index 67aef3e..1f19277 100644
--- a/engine/SCons/Platform/posix.py
+++ b/engine/SCons/Platform/posix.py
@@ -30,12 +30,11 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/posix.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Platform/posix.py 5023 2010/06/14 22:05:46 scons"
 
 import errno
 import os
 import os.path
-import string
 import subprocess
 import sys
 import select
@@ -53,14 +52,14 @@ def escape(arg):
     slash = '\\'
     special = '"$()'
 
-    arg = string.replace(arg, slash, slash+slash)
+    arg = arg.replace(slash, slash+slash)
     for c in special:
-        arg = string.replace(arg, c, slash+c)
+        arg = arg.replace(c, slash+c)
 
     return '"' + arg + '"'
 
 def exec_system(l, env):
-    stat = os.system(string.join(l))
+    stat = os.system(' '.join(l))
     if stat & 0xff:
         return stat | 0x80
     return stat >> 8
@@ -90,22 +89,22 @@ def exec_fork(l, env):
         return stat >> 8
 
 def _get_env_command(sh, escape, cmd, args, env):
-    s = string.join(args)
+    s = ' '.join(args)
     if env:
         l = ['env', '-'] + \
-            map(lambda t, e=escape: e(t[0])+'='+e(t[1]), env.items()) + \
+            [escape(t[0])+'='+escape(t[1]) for t in env.items()] + \
             [sh, '-c', escape(s)]
-        s = string.join(l)
+        s = ' '.join(l)
     return s
 
 def env_spawn(sh, escape, cmd, args, env):
     return exec_system([_get_env_command( sh, escape, cmd, args, env)], env)
 
 def spawnvpe_spawn(sh, escape, cmd, args, env):
-    return exec_spawnvpe([sh, '-c', string.join(args)], env)
+    return exec_spawnvpe([sh, '-c', ' '.join(args)], env)
 
 def fork_spawn(sh, escape, cmd, args, env):
-    return exec_fork([sh, '-c', string.join(args)], env)
+    return exec_fork([sh, '-c', ' '.join(args)], env)
 
 def process_cmd_output(cmd_stdout, cmd_stderr, stdout, stderr):
     stdout_eof = stderr_eof = 0
@@ -131,7 +130,7 @@ def process_cmd_output(cmd_stdout, cmd_stderr, stdout, stderr):
                 raise
 
 def exec_popen3(l, env, stdout, stderr):
-    proc = subprocess.Popen(string.join(l),
+    proc = subprocess.Popen(' '.join(l),
                             stdout=stdout,
                             stderr=stderr,
                             shell=True)
@@ -198,7 +197,7 @@ def piped_env_spawn(sh, escape, cmd, args, env, stdout, stderr):
 def piped_fork_spawn(sh, escape, cmd, args, env, stdout, stderr):
     # spawn using fork / exec and providing a pipe for the command's
     # stdout / stderr stream
-    return exec_piped_fork([sh, '-c', string.join(args)],
+    return exec_piped_fork([sh, '-c', ' '.join(args)],
                            env, stdout, stderr)
 
 
@@ -217,7 +216,7 @@ def generate(env):
     # os.fork()/os.exec() works better than os.system().  There may just
     # not be a default that works best for all users.
 
-    if os.__dict__.has_key('spawnvpe'):
+    if 'spawnvpe' in os.__dict__:
         spawn = spawnvpe_spawn
     elif env.Detect('env'):
         spawn = env_spawn
@@ -229,7 +228,7 @@ def generate(env):
     else:
         pspawn = piped_fork_spawn
 
-    if not env.has_key('ENV'):
+    if 'ENV' not in env:
         env['ENV']        = {}
     env['ENV']['PATH']    = '/usr/local/bin:/opt/bin:/bin:/usr/bin'
     env['OBJPREFIX']      = ''
diff --git a/engine/SCons/Platform/sunos.py b/engine/SCons/Platform/sunos.py
index 0a816db..f855aa8 100644
--- a/engine/SCons/Platform/sunos.py
+++ b/engine/SCons/Platform/sunos.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/sunos.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Platform/sunos.py 5023 2010/06/14 22:05:46 scons"
 
 import posix
 
diff --git a/engine/SCons/Platform/win32.py b/engine/SCons/Platform/win32.py
index 1443099..57d9bdc 100644
--- a/engine/SCons/Platform/win32.py
+++ b/engine/SCons/Platform/win32.py
@@ -30,11 +30,10 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/win32.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Platform/win32.py 5023 2010/06/14 22:05:46 scons"
 
 import os
 import os.path
-import string
 import sys
 import tempfile
 
@@ -61,27 +60,27 @@ except AttributeError:
 else:
     parallel_msg = None
 
-    import __builtin__
+    import builtins
 
-    _builtin_file = __builtin__.file
-    _builtin_open = __builtin__.open
+    _builtin_file = builtins.file
+    _builtin_open = builtins.open
     
     def _scons_file(*args, **kw):
-        fp = apply(_builtin_file, args, kw)
+        fp = _builtin_file(*args, **kw)
         win32api.SetHandleInformation(msvcrt.get_osfhandle(fp.fileno()),
                                       win32con.HANDLE_FLAG_INHERIT,
                                       0)
         return fp
 
     def _scons_open(*args, **kw):
-        fp = apply(_builtin_open, args, kw)
+        fp = _builtin_open(*args, **kw)
         win32api.SetHandleInformation(msvcrt.get_osfhandle(fp.fileno()),
                                       win32con.HANDLE_FLAG_INHERIT,
                                       0)
         return fp
 
-    __builtin__.file = _scons_file
-    __builtin__.open = _scons_open
+    builtins.file = _scons_file
+    builtins.open = _scons_open
 
 
 
@@ -109,11 +108,11 @@ def piped_spawn(sh, escape, cmd, args, env, stdout, stderr):
         stderrRedirected = 0
         for arg in args:
             # are there more possibilities to redirect stdout ?
-            if (string.find( arg, ">", 0, 1 ) != -1 or
-                string.find( arg, "1>", 0, 2 ) != -1):
+            if (arg.find( ">", 0, 1 ) != -1 or
+                arg.find( "1>", 0, 2 ) != -1):
                 stdoutRedirected = 1
             # are there more possibilities to redirect stderr ?
-            if string.find( arg, "2>", 0, 2 ) != -1:
+            if arg.find( "2>", 0, 2 ) != -1:
                 stderrRedirected = 1
 
         # redirect output of non-redirected streams to our tempfiles
@@ -124,7 +123,7 @@ def piped_spawn(sh, escape, cmd, args, env, stdout, stderr):
 
         # actually do the spawn
         try:
-            args = [sh, '/C', escape(string.join(args)) ]
+            args = [sh, '/C', escape(' '.join(args)) ]
             ret = os.spawnve(os.P_WAIT, sh, args, env)
         except OSError, e:
             # catch any error
@@ -162,7 +161,7 @@ def exec_spawn(l, env):
             result = 127
             if len(l) > 2:
                 if len(l[2]) < 1000:
-                    command = string.join(l[0:3])
+                    command = ' '.join(l[0:3])
                 else:
                     command = l[0]
             else:
@@ -174,7 +173,7 @@ def spawn(sh, escape, cmd, args, env):
     if not sh:
         sys.stderr.write("scons: Could not find command interpreter, is it in your PATH?\n")
         return 127
-    return exec_spawn([sh, '/C', escape(string.join(args))], env)
+    return exec_spawn([sh, '/C', escape(' '.join(args))], env)
 
 # Windows does not allow special characters in file names anyway, so no
 # need for a complex escape function, we will just quote the arg, except
@@ -240,7 +239,7 @@ def get_program_files_dir():
 
 
 # Determine which windows CPU were running on.
-class ArchDefinition:
+class ArchDefinition(object):
     """
     A class for defining architecture-specific settings and logic.
     """
@@ -318,7 +317,7 @@ def generate(env):
         tmp_path = systemroot + os.pathsep + \
                    os.path.join(systemroot,'System32')
         tmp_pathext = '.com;.exe;.bat;.cmd'
-        if os.environ.has_key('PATHEXT'):
+        if 'PATHEXT' in os.environ:
             tmp_pathext = os.environ['PATHEXT'] 
         cmd_interp = SCons.Util.WhereIs('cmd', tmp_path, tmp_pathext)
         if not cmd_interp:
@@ -330,7 +329,7 @@ def generate(env):
             cmd_interp = env.Detect('command')
 
     
-    if not env.has_key('ENV'):
+    if 'ENV' not in env:
         env['ENV']        = {}
 
     # Import things from the external environment to the construction
@@ -347,7 +346,7 @@ def generate(env):
         if v:
             env['ENV'][var] = v
 
-    if not env['ENV'].has_key('COMSPEC'):
+    if 'COMSPEC' not in env['ENV']:
         v = os.environ.get("COMSPEC")
         if v:
             env['ENV']['COMSPEC'] = v
diff --git a/engine/SCons/SConf.py b/engine/SCons/SConf.py
index 57ec0ca..bce935e 100644
--- a/engine/SCons/SConf.py
+++ b/engine/SCons/SConf.py
@@ -26,15 +26,15 @@ Autoconf-like configuration support.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/SConf.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/SConf.py 5023 2010/06/14 22:05:46 scons"
 
+import SCons.compat
+
+import io
 import os
 import re
-import string
-import StringIO
 import sys
 import traceback
-import types
 
 import SCons.Action
 import SCons.Builder
@@ -79,7 +79,7 @@ def SetCacheMode(mode):
     elif mode == "cache":
         cache_mode = CACHE
     else:
-        raise ValueError, "SCons.SConf.SetCacheMode: Unknown mode " + mode
+        raise ValueError("SCons.SConf.SetCacheMode: Unknown mode " + mode)
 
 progress_display = SCons.Util.display # will be overwritten by SCons.Script
 def SetProgressDisplay(display):
@@ -96,7 +96,7 @@ sconf_global = None   # current sconf object
 
 def _createConfigH(target, source, env):
     t = open(str(target[0]), "w")
-    defname = re.sub('[^A-Za-z0-9_]', '_', string.upper(str(target[0])))
+    defname = re.sub('[^A-Za-z0-9_]', '_', str(target[0]).upper())
     t.write("""#ifndef %(DEFNAME)s_SEEN
 #define %(DEFNAME)s_SEEN
 
@@ -153,12 +153,7 @@ def _createSource( target, source, env ):
     fd.close()
 def _stringSource( target, source, env ):
     return (str(target[0]) + ' <-\n  |' +
-            string.replace( source[0].get_contents(),
-                            '\n', "\n  |" ) )
-
-# python 2.2 introduces types.BooleanType
-BooleanTypes = [types.IntType]
-if hasattr(types, 'BooleanType'): BooleanTypes.append(types.BooleanType)
+            source[0].get_contents().replace( '\n', "\n  |" ) )
 
 class SConfBuildInfo(SCons.Node.FS.FileBuildInfo):
     """
@@ -174,13 +169,13 @@ class SConfBuildInfo(SCons.Node.FS.FileBuildInfo):
         self.string = string
 
 
-class Streamer:
+class Streamer(object):
     """
     'Sniffer' for a file-like writable object. Similar to the unix tool tee.
     """
     def __init__(self, orig):
         self.orig = orig
-        self.s = StringIO.StringIO()
+        self.s = io.StringIO()
 
     def write(self, str):
         if self.orig:
@@ -222,8 +217,7 @@ class SConfBuildTask(SCons.Taskmaster.AlwaysTask):
               "The stored build information has an unexpected class: %s" % bi.__class__)
         else:
             self.display("The original builder output was:\n" +
-                         string.replace("  |" + str(bi.string),
-                                        "\n", "\n  |"))
+                         ("  |" + str(bi.string)).replace("\n", "\n  |"))
 
     def failed(self):
         # check, if the reason was a ConfigureDryRunError or a
@@ -246,7 +240,7 @@ class SConfBuildTask(SCons.Taskmaster.AlwaysTask):
                 def excepthook(type, value, tb):
                     traceback.print_tb(tb)
                     print type, value
-            apply(excepthook, self.exc_info())
+            excepthook(*self.exc_info())
         return SCons.Taskmaster.Task.failed(self)
 
     def collect_node_states(self):
@@ -374,7 +368,7 @@ class SConfBuildTask(SCons.Taskmaster.AlwaysTask):
                     sconsign.set_entry(t.name, sconsign_entry)
                     sconsign.merge()
 
-class SConfBase:
+class SConfBase(object):
     """This is simply a class to represent a configure context. After
     creating a SConf object, you can call any tests. After finished with your
     tests, be sure to call the Finish() method, which returns the modified
@@ -400,8 +394,7 @@ class SConfBase:
             SConfFS = SCons.Node.FS.default_fs or \
                       SCons.Node.FS.FS(env.fs.pathTop)
         if sconf_global is not None:
-            raise (SCons.Errors.UserError,
-                   "Only one SConf object may be active at one time")
+            raise SCons.Errors.UserError
         self.env = env
         if log_file is not None:
             log_file = SConfFS.File(env.subst(log_file))
@@ -465,7 +458,7 @@ class SConfBase:
         lines.append(define_str)
         lines.append('')
 
-        self.config_h_text = self.config_h_text + string.join(lines, '\n')
+        self.config_h_text = self.config_h_text + '\n'.join(lines)
 
     def BuildNodes(self, nodes):
         """
@@ -635,17 +628,16 @@ class SConfBase:
                 return( 1, outputStr)
         return (0, "")
 
-    class TestWrapper:
+    class TestWrapper(object):
         """A wrapper around Tests (to ensure sanity)"""
         def __init__(self, test, sconf):
             self.test = test
             self.sconf = sconf
         def __call__(self, *args, **kw):
             if not self.sconf.active:
-                raise (SCons.Errors.UserError,
-                       "Test called after sconf.Finish()")
+                raise SCons.Errors.UserError
             context = CheckContext(self.sconf)
-            ret = apply(self.test, (context,) +  args, kw)
+            ret = self.test(context, *args, **kw)
             if self.sconf.config_h is not None:
                 self.sconf.config_h_text = self.sconf.config_h_text + context.config_h
             context.Result("error: no result")
@@ -689,7 +681,7 @@ class SConfBase:
         if self.logfile is not None and not dryrun:
             # truncate logfile, if SConf.Configure is called for the first time
             # in a build
-            if _ac_config_logs.has_key(self.logfile):
+            if self.logfile in _ac_config_logs:
                 log_mode = "a"
             else:
                 _ac_config_logs[self.logfile] = None
@@ -724,7 +716,7 @@ class SConfBase:
         global sconf_global, _ac_config_hs
 
         if not self.active:
-            raise SCons.Errors.UserError, "Finish may be called only once!"
+            raise SCons.Errors.UserError("Finish may be called only once!")
         if self.logstream is not None and not dryrun:
             self.logstream.write("\n")
             self.logstream.close()
@@ -739,7 +731,7 @@ class SConfBase:
             _ac_config_hs[self.config_h] = self.config_h_text
         self.env.fs = self.lastEnvFs
 
-class CheckContext:
+class CheckContext(object):
     """Provides a context for configure tests. Defines how a test writes to the
     screen and log file.
 
@@ -788,15 +780,15 @@ class CheckContext:
         string. In case of an integer, the written text will be 'yes' or 'no'.
         The result is only displayed when self.did_show_result is not set.
         """
-        if type(res) in BooleanTypes:
+        if isinstance(res, (int, bool)):
             if res:
                 text = "yes"
             else:
                 text = "no"
-        elif type(res) == types.StringType:
+        elif isinstance(res, str):
             text = res
         else:
-            raise TypeError, "Expected string, int or bool, got " + str(type(res))
+            raise TypeError("Expected string, int or bool, got " + str(type(res)))
 
         if self.did_show_result == 0:
             # Didn't show result yet, do it now.
@@ -804,19 +796,19 @@ class CheckContext:
             self.did_show_result = 1
 
     def TryBuild(self, *args, **kw):
-        return apply(self.sconf.TryBuild, args, kw)
+        return self.sconf.TryBuild(*args, **kw)
 
     def TryAction(self, *args, **kw):
-        return apply(self.sconf.TryAction, args, kw)
+        return self.sconf.TryAction(*args, **kw)
 
     def TryCompile(self, *args, **kw):
-        return apply(self.sconf.TryCompile, args, kw)
+        return self.sconf.TryCompile(*args, **kw)
 
     def TryLink(self, *args, **kw):
-        return apply(self.sconf.TryLink, args, kw)
+        return self.sconf.TryLink(*args, **kw)
 
     def TryRun(self, *args, **kw):
-        return apply(self.sconf.TryRun, args, kw)
+        return self.sconf.TryRun(*args, **kw)
 
     def __getattr__( self, attr ):
         if( attr == 'env' ):
@@ -824,7 +816,7 @@ class CheckContext:
         elif( attr == 'lastTarget' ):
             return self.sconf.lastTarget
         else:
-            raise AttributeError, "CheckContext instance has no attribute '%s'" % attr
+            raise AttributeError("CheckContext instance has no attribute '%s'" % attr)
 
     #### Stuff used by Conftest.py (look there for explanations).
 
@@ -889,7 +881,7 @@ def SConf(*args, **kw):
                 del kw[bt]
             except KeyError:
                 pass
-        return apply(SConfBase, args, kw)
+        return SConfBase(*args, **kw)
     else:
         return SCons.Util.Null()
 
@@ -901,7 +893,7 @@ def CheckFunc(context, function_name, header = None, language = None):
 
 def CheckType(context, type_name, includes = "", language = None):
     res = SCons.Conftest.CheckType(context, type_name,
-                                        header = includes, language = language)
+                                   header = includes, language = language)
     context.did_show_result = 1
     return not res
 
@@ -933,7 +925,7 @@ def createIncludesFromHeaders(headers, leaveLast, include_quotes = '""'):
     for s in headers:
         l.append("#include %s%s%s\n"
                  % (include_quotes[0], s, include_quotes[1]))
-    return string.join(l, ''), lastHeader
+    return ''.join(l), lastHeader
 
 def CheckHeader(context, header, include_quotes = '<>', language = None):
     """
diff --git a/engine/SCons/SConsign.py b/engine/SCons/SConsign.py
index 8865c3d..25f8486 100644
--- a/engine/SCons/SConsign.py
+++ b/engine/SCons/SConsign.py
@@ -27,11 +27,13 @@ Writing and reading information to the .sconsign file or files.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/SConsign.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/SConsign.py 5023 2010/06/14 22:05:46 scons"
+
+import SCons.compat
 
-import cPickle
 import os
-import os.path
+# compat layer imports "cPickle" for us if it's available.
+import pickle
 
 import SCons.dblite
 import SCons.Warnings
@@ -106,7 +108,7 @@ def write():
         else:
             syncmethod()
 
-class SConsignEntry:
+class SConsignEntry(object):
     """
     Wrapper class for the generic entry in a .sconsign file.
     The Node subclass populates it with attributes as it pleases.
@@ -124,7 +126,7 @@ class SConsignEntry:
     def convert_from_sconsign(self, dir, name):
         self.binfo.convert_from_sconsign(dir, name)
 
-class Base:
+class Base(object):
     """
     This is the controlling class for the signatures for the collection of
     entries associated with a specific directory.  The actual directory
@@ -201,8 +203,8 @@ class DB(Base):
             pass
         else:
             try:
-                self.entries = cPickle.loads(rawentries)
-                if type(self.entries) is not type({}):
+                self.entries = pickle.loads(rawentries)
+                if not isinstance(self.entries, dict):
                     self.entries = {}
                     raise TypeError
             except KeyboardInterrupt:
@@ -239,7 +241,7 @@ class DB(Base):
         path = normcase(self.dir.path)
         for key, entry in self.entries.items():
             entry.convert_to_sconsign()
-        db[path] = cPickle.dumps(self.entries, 1)
+        db[path] = pickle.dumps(self.entries, 1)
 
         if sync:
             try:
@@ -260,8 +262,8 @@ class Dir(Base):
         if not fp:
             return
 
-        self.entries = cPickle.load(fp)
-        if type(self.entries) is not type({}):
+        self.entries = pickle.load(fp)
+        if not isinstance(self.entries, dict):
             self.entries = {}
             raise TypeError
 
@@ -327,7 +329,7 @@ class DirFile(Dir):
                 return
         for key, entry in self.entries.items():
             entry.convert_to_sconsign()
-        cPickle.dump(self.entries, file, 1)
+        pickle.dump(self.entries, file, 1)
         file.close()
         if fname != self.sconsign:
             try:
diff --git a/engine/SCons/Scanner/C.py b/engine/SCons/Scanner/C.py
index a8f4be9..598d3b1 100644
--- a/engine/SCons/Scanner/C.py
+++ b/engine/SCons/Scanner/C.py
@@ -27,7 +27,7 @@ This module implements the depenency scanner for C/C++ code.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/C.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Scanner/C.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Node.FS
 import SCons.Scanner
@@ -44,7 +44,7 @@ class SConsCPPScanner(SCons.cpp.PreProcessor):
     missing.
     """
     def __init__(self, *args, **kw):
-        apply(SCons.cpp.PreProcessor.__init__, (self,)+args, kw)
+        SCons.cpp.PreProcessor.__init__(self, *args, **kw)
         self.missing = []
     def initialize_result(self, fname):
         self.result = SCons.Util.UniqueList([fname])
@@ -81,7 +81,7 @@ def dictify_CPPDEFINES(env):
         return {cppdefines : None}
     return cppdefines
 
-class SConsCPPScannerWrapper:
+class SConsCPPScannerWrapper(object):
     """
     The SCons wrapper around a cpp.py scanner.
 
diff --git a/engine/SCons/Scanner/D.py b/engine/SCons/Scanner/D.py
index f657eeb..04bb5a7 100644
--- a/engine/SCons/Scanner/D.py
+++ b/engine/SCons/Scanner/D.py
@@ -30,10 +30,9 @@ Coded by Andy Friesen
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/D.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Scanner/D.py 5023 2010/06/14 22:05:46 scons"
 
 import re
-import string
 
 import SCons.Scanner
 
@@ -54,7 +53,7 @@ class D(SCons.Scanner.Classic):
 
     def find_include(self, include, source_dir, path):
         # translate dots (package separators) to slashes
-        inc = string.replace(include, '.', '/')
+        inc = include.replace('.', '/')
 
         i = SCons.Node.FS.find_file(inc + '.d', (source_dir,) + path)
         if i is None:
diff --git a/engine/SCons/Scanner/Dir.py b/engine/SCons/Scanner/Dir.py
index bb25324..172aa62 100644
--- a/engine/SCons/Scanner/Dir.py
+++ b/engine/SCons/Scanner/Dir.py
@@ -19,30 +19,29 @@
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Scanner/Dir.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Scanner/Dir.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Node.FS
 import SCons.Scanner
 
 def only_dirs(nodes):
     is_Dir = lambda n: isinstance(n.disambiguate(), SCons.Node.FS.Dir)
-    return filter(is_Dir, nodes)
+    return list(filter(is_Dir, nodes))
 
 def DirScanner(**kw):
     """Return a prototype Scanner instance for scanning
     directories for on-disk files"""
     kw['node_factory'] = SCons.Node.FS.Entry
     kw['recursive'] = only_dirs
-    return apply(SCons.Scanner.Base, (scan_on_disk, "DirScanner"), kw)
+    return SCons.Scanner.Base(scan_on_disk, "DirScanner", **kw)
 
 def DirEntryScanner(**kw):
     """Return a prototype Scanner instance for "scanning"
     directory Nodes for their in-memory entries"""
     kw['node_factory'] = SCons.Node.FS.Entry
     kw['recursive'] = None
-    return apply(SCons.Scanner.Base, (scan_in_memory, "DirEntryScanner"), kw)
+    return SCons.Scanner.Base(scan_in_memory, "DirEntryScanner", **kw)
 
 skip_entry = {}
 
@@ -67,7 +66,7 @@ for skip in skip_entry_list:
     skip_entry[skip] = 1
     skip_entry[SCons.Node.FS._my_normcase(skip)] = 1
 
-do_not_scan = lambda k: not skip_entry.has_key(k)
+do_not_scan = lambda k: k not in skip_entry
 
 def scan_on_disk(node, env, path=()):
     """
@@ -100,9 +99,8 @@ def scan_in_memory(node, env, path=()):
         # mixed Node types (Dirs and Files, for example) has a Dir as
         # the first entry.
         return []
-    entry_list = filter(do_not_scan, entries.keys())
-    entry_list.sort()
-    return map(lambda n, e=entries: e[n], entry_list)
+    entry_list = sorted(filter(do_not_scan, list(entries.keys())))
+    return [entries[n] for n in entry_list]
 
 # Local Variables:
 # tab-width:4
diff --git a/engine/SCons/Scanner/Fortran.py b/engine/SCons/Scanner/Fortran.py
index 1587368..8d023e7 100644
--- a/engine/SCons/Scanner/Fortran.py
+++ b/engine/SCons/Scanner/Fortran.py
@@ -25,12 +25,10 @@ This module implements the dependency scanner for Fortran code.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Scanner/Fortran.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Scanner/Fortran.py 5023 2010/06/14 22:05:46 scons"
 
 import re
-import string
 
 import SCons.Node
 import SCons.Node.FS
@@ -75,7 +73,7 @@ class F90Scanner(SCons.Scanner.Classic):
         kw['skeys'] = suffixes
         kw['name'] = name
 
-        apply(SCons.Scanner.Current.__init__, (self,) + args, kw)
+        SCons.Scanner.Current.__init__(self, *args, **kw)
 
     def scan(self, node, env, path=()):
 
@@ -94,12 +92,12 @@ class F90Scanner(SCons.Scanner.Classic):
             d = {}
             for m in defmodules:
                 d[m] = 1
-            modules = filter(lambda m, d=d: not d.has_key(m), modules)
+            modules = [m for m in modules if m not in d]
             #modules = self.undefinedModules(modules, defmodules)
 
             # Convert module name to a .mod filename
             suffix = env.subst('$FORTRANMODSUFFIX')
-            modules = map(lambda x, s=suffix: string.lower(x) + s, modules)
+            modules = [x.lower() + suffix for x in modules]
             # Remove unique items from the list
             mods_and_includes = SCons.Util.unique(includes+modules)
             node.includes = mods_and_includes
@@ -123,9 +121,7 @@ class F90Scanner(SCons.Scanner.Classic):
                 sortkey = self.sort_key(dep)
                 nodes.append((sortkey, n))
 
-        nodes.sort()
-        nodes = map(lambda pair: pair[1], nodes)
-        return nodes
+        return [pair[1] for pair in sorted(nodes)]
 
 def FortranScan(path_variable="FORTRANPATH"):
     """Return a prototype Scanner instance for scanning source files
diff --git a/engine/SCons/Scanner/IDL.py b/engine/SCons/Scanner/IDL.py
index f2169f8..507b9e1 100644
--- a/engine/SCons/Scanner/IDL.py
+++ b/engine/SCons/Scanner/IDL.py
@@ -28,7 +28,7 @@ Definition Language) files.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/IDL.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Scanner/IDL.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Node.FS
 import SCons.Scanner
diff --git a/engine/SCons/Scanner/LaTeX.py b/engine/SCons/Scanner/LaTeX.py
index 01755f4..77be34c 100644
--- a/engine/SCons/Scanner/LaTeX.py
+++ b/engine/SCons/Scanner/LaTeX.py
@@ -27,10 +27,9 @@ This module implements the dependency scanner for LaTeX code.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/LaTeX.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Scanner/LaTeX.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
-import string
 import re
 
 import SCons.Scanner
@@ -41,7 +40,7 @@ TexGraphics   = ['.eps', '.ps']
 LatexGraphics = ['.pdf', '.png', '.jpg', '.gif', '.tif']
 
 # Used as a return value of modify_env_var if the variable is not set.
-class _Null:
+class _Null(object):
     pass
 _null = _Null
 
@@ -58,13 +57,10 @@ def modify_env_var(env, var, abspath):
     env.PrependENVPath(var, abspath)
     try:
         if SCons.Util.is_List(env[var]):
-            #TODO(1.5)
-            #env.PrependENVPath(var, [os.path.abspath(str(p)) for p in env[var]])
-            env.PrependENVPath(var, map(lambda p: os.path.abspath(str(p)), env[var]))
+            env.PrependENVPath(var, [os.path.abspath(str(p)) for p in env[var]])
         else:
             # Split at os.pathsep to convert into absolute path
-            #TODO(1.5) env.PrependENVPath(var, [os.path.abspath(p) for p in str(env[var]).split(os.pathsep)])
-            env.PrependENVPath(var, map(lambda p: os.path.abspath(p), string.split(str(env[var]), os.pathsep)))
+            env.PrependENVPath(var, [os.path.abspath(p) for p in str(env[var]).split(os.pathsep)])
     except KeyError:
         pass
 
@@ -73,15 +69,13 @@ def modify_env_var(env, var, abspath):
     # does not work, refuses to append ":" (os.pathsep).
 
     if SCons.Util.is_List(env['ENV'][var]):
-        # TODO(1.5)
-        #env['ENV'][var] = os.pathsep.join(env['ENV'][var])
-        env['ENV'][var] = string.join(env['ENV'][var], os.pathsep)
+        env['ENV'][var] = os.pathsep.join(env['ENV'][var])
     # Append the trailing os.pathsep character here to catch the case with no env[var]
     env['ENV'][var] = env['ENV'][var] + os.pathsep
 
     return save
 
-class FindENVPathDirs:
+class FindENVPathDirs(object):
     """A class to bind a specific *PATH variable name to a function that
     will return all of the *path directories."""
     def __init__(self, variable):
@@ -165,7 +159,7 @@ class LaTeX(SCons.Scanner.Base):
                      'bibliographystyle': 'BSTINPUTS',
                      'usepackage': 'TEXINPUTS',
                      'lstinputlisting': 'TEXINPUTS'}
-    env_variables = SCons.Util.unique(keyword_paths.values())
+    env_variables = SCons.Util.unique(list(keyword_paths.values()))
 
     def __init__(self, name, suffixes, graphics_extensions, *args, **kw):
 
@@ -184,7 +178,7 @@ class LaTeX(SCons.Scanner.Base):
                 return []
             return self.scan_recurse(node, path)
 
-        class FindMultiPathDirs:
+        class FindMultiPathDirs(object):
             """The stock FindPathDirs function has the wrong granularity:
             it is called once per target, while we need the path that depends
             on what kind of included files is being searched. This wrapper
@@ -212,7 +206,7 @@ class LaTeX(SCons.Scanner.Base):
                 # To prevent "dict is not hashable error"
                 return tuple(di.items())
 
-        class LaTeXScanCheck:
+        class LaTeXScanCheck(object):
             """Skip all but LaTeX source files, i.e., do not scan *.eps,
             *.pdf, *.jpg, etc.
             """
@@ -231,7 +225,7 @@ class LaTeX(SCons.Scanner.Base):
         kw['scan_check'] = LaTeXScanCheck(suffixes)
         kw['name'] = name
 
-        apply(SCons.Scanner.Base.__init__, (self,) + args, kw)
+        SCons.Scanner.Base.__init__(self, *args, **kw)
 
     def _latex_names(self, include):
         filename = include[1]
@@ -252,11 +246,12 @@ class LaTeX(SCons.Scanner.Base):
         if include[0] == 'includegraphics':
             base, ext = os.path.splitext( filename )
             if ext == "":
-                #TODO(1.5) return [filename + e for e in self.graphics_extensions]
-                #return map(lambda e, f=filename: f+e, self.graphics_extensions + TexGraphics)
-                # use the line above to find dependency for PDF builder when only .eps figure is present
-                # Since it will be found if the user tell scons how to make the pdf figure leave it out for now.
-                return map(lambda e, f=filename: f+e, self.graphics_extensions)
+                #return [filename+e for e in self.graphics_extensions + TexGraphics]
+                # use the line above to find dependencies for the PDF builder
+                # when only an .eps figure is present.  Since it will be found
+                # if the user tells scons how to make the pdf figure, leave
+                # it out for now.
+                return [filename+e for e in self.graphics_extensions]
         return [filename]
 
     def sort_key(self, include):
@@ -303,7 +298,7 @@ class LaTeX(SCons.Scanner.Base):
             split_includes = []
             for include in includes:
                 inc_type = noopt_cre.sub('', include[0])
-                inc_list = string.split(include[1],',')
+                inc_list = include[1].split(',')
                 for j in range(len(inc_list)):
                     split_includes.append( (inc_type, inc_list[j]) )
             #
@@ -336,19 +331,11 @@ class LaTeX(SCons.Scanner.Base):
         while queue:
             
             include = queue.pop()
-            # TODO(1.5):  more compact:
-            #try:
-            #    if seen[include[1]] == 1:
-            #        continue
-            #except KeyError:
-            #    seen[include[1]] = 1
             try:
-                already_seen = seen[include[1]]
+                if seen[include[1]] == 1:
+                    continue
             except KeyError:
                 seen[include[1]] = 1
-                already_seen = False
-            if already_seen:
-                continue
 
             #
             # Handle multiple filenames in include[1]
@@ -366,10 +353,7 @@ class LaTeX(SCons.Scanner.Base):
                 # recurse down 
                 queue.extend( self.scan(n) )
 
-        #
-        nodes.sort()
-        nodes = map(lambda pair: pair[1], nodes)
-        return nodes
+        return [pair[1] for pair in sorted(nodes)]
 
 # Local Variables:
 # tab-width:4
diff --git a/engine/SCons/Scanner/Prog.py b/engine/SCons/Scanner/Prog.py
index 395d39f..97f25b3 100644
--- a/engine/SCons/Scanner/Prog.py
+++ b/engine/SCons/Scanner/Prog.py
@@ -21,9 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/Prog.py 4720 2010/03/24 03:14:11 jars"
-
-import string
+__revision__ = "src/engine/SCons/Scanner/Prog.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Node
 import SCons.Node.FS
@@ -37,7 +35,7 @@ def ProgramScanner(**kw):
     """Return a prototype Scanner instance for scanning executable
     files for static-lib dependencies"""
     kw['path_function'] = SCons.Scanner.FindPathDirs('LIBPATH')
-    ps = apply(SCons.Scanner.Base, [scan, "ProgramScanner"], kw)
+    ps = SCons.Scanner.Base(scan, "ProgramScanner", **kw)
     return ps
 
 def scan(node, env, libpath = ()):
@@ -53,7 +51,7 @@ def scan(node, env, libpath = ()):
         # There are no LIBS in this environment, so just return a null list:
         return []
     if SCons.Util.is_String(libs):
-        libs = string.split(libs)
+        libs = libs.split()
     else:
         libs = SCons.Util.flatten(libs)
 
diff --git a/engine/SCons/Scanner/RC.py b/engine/SCons/Scanner/RC.py
index 23de58b..de7744b 100644
--- a/engine/SCons/Scanner/RC.py
+++ b/engine/SCons/Scanner/RC.py
@@ -28,7 +28,7 @@ Definition Language) files.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/RC.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Scanner/RC.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Node.FS
 import SCons.Scanner
diff --git a/engine/SCons/Scanner/__init__.py b/engine/SCons/Scanner/__init__.py
index 987df51..2a6f299 100644
--- a/engine/SCons/Scanner/__init__.py
+++ b/engine/SCons/Scanner/__init__.py
@@ -27,16 +27,15 @@ The Scanner package for the SCons software construction utility.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/__init__.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Scanner/__init__.py 5023 2010/06/14 22:05:46 scons"
 
 import re
-import string
 
 import SCons.Node.FS
 import SCons.Util
 
 
-class _Null:
+class _Null(object):
     pass
 
 # This is used instead of None as a default argument value so None can be
@@ -56,13 +55,13 @@ def Scanner(function, *args, **kw):
     patterned on SCons code.
     """
     if SCons.Util.is_Dict(function):
-        return apply(Selector, (function,) + args, kw)
+        return Selector(function, *args, **kw)
     else:
-        return apply(Base, (function,) + args, kw)
+        return Base(function, *args, **kw)
 
 
 
-class FindPathDirs:
+class FindPathDirs(object):
     """A class to bind a specific *PATH variable name to a function that
     will return all of the *path directories."""
     def __init__(self, variable):
@@ -80,7 +79,7 @@ class FindPathDirs:
 
 
 
-class Base:
+class Base(object):
     """
     The base class for dependency scanners.  This implements
     straightforward, single-pass scanning of a single file.
@@ -171,7 +170,7 @@ class Base:
 
         if skeys is _null:
             if SCons.Util.is_Dict(function):
-                skeys = function.keys()
+                skeys = list(function.keys())
             else:
                 skeys = []
         self.skeys = skeys
@@ -218,7 +217,7 @@ class Base:
         nodes = []
         for l in list:
             if self.node_class and not isinstance(l, self.node_class):
-                l = apply(node_factory, (l,), kw)
+                l = node_factory(l, **kw)
             nodes.append(l)
         return nodes
 
@@ -280,9 +279,9 @@ class Selector(Base):
     for custom modules that may be out there.)
     """
     def __init__(self, dict, *args, **kw):
-        apply(Base.__init__, (self, None,)+args, kw)
+        Base.__init__(self, None, *args, **kw)
         self.dict = dict
-        self.skeys = dict.keys()
+        self.skeys = list(dict.keys())
 
     def __call__(self, node, env, path = ()):
         return self.select(node)(node, env, path)
@@ -309,7 +308,7 @@ class Current(Base):
         def current_check(node, env):
             return not node.has_builder() or node.is_up_to_date()
         kw['scan_check'] = current_check
-        apply(Base.__init__, (self,) + args, kw)
+        Base.__init__(self, *args, **kw)
 
 class Classic(Current):
     """
@@ -339,7 +338,7 @@ class Classic(Current):
         kw['skeys'] = suffixes
         kw['name'] = name
 
-        apply(Current.__init__, (self,) + args, kw)
+        Current.__init__(self, *args, **kw)
 
     def find_include(self, include, source_dir, path):
         n = SCons.Node.FS.find_file(include, (source_dir,) + tuple(path))
@@ -360,7 +359,7 @@ class Classic(Current):
             includes = self.find_include_names (node)
             # Intern the names of the include files. Saves some memory
             # if the same header is included many times.
-            node.includes = map(SCons.Util.silent_intern, includes)
+            node.includes = list(map(SCons.Util.silent_intern, includes))
 
         # This is a hand-coded DSU (decorate-sort-undecorate, or
         # Schwartzian transform) pattern.  The sort key is the raw name
@@ -379,12 +378,9 @@ class Classic(Current):
                 SCons.Warnings.warn(SCons.Warnings.DependencyWarning,
                                     "No dependency generated for file: %s (included from: %s) -- file not found" % (i, node))
             else:
-                sortkey = self.sort_key(include)
-                nodes.append((sortkey, n))
+                nodes.append((self.sort_key(include), n))
 
-        nodes.sort()
-        nodes = map(lambda pair: pair[1], nodes)
-        return nodes
+        return [pair[1] for pair in sorted(nodes)]
 
 class ClassicCPP(Classic):
     """
@@ -408,7 +404,7 @@ class ClassicCPP(Classic):
         return n, i
 
     def sort_key(self, include):
-        return SCons.Node.FS._my_normcase(string.join(include))
+        return SCons.Node.FS._my_normcase(' '.join(include))
 
 # Local Variables:
 # tab-width:4
diff --git a/engine/SCons/Script/Interactive.py b/engine/SCons/Script/Interactive.py
index 6218021..52fc753 100644
--- a/engine/SCons/Script/Interactive.py
+++ b/engine/SCons/Script/Interactive.py
@@ -19,9 +19,8 @@
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Script/Interactive.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Script/Interactive.py 5023 2010/06/14 22:05:46 scons"
 
 __doc__ = """
 SCons interactive mode
@@ -90,7 +89,6 @@ import copy
 import os
 import re
 import shlex
-import string
 import sys
 
 try:
@@ -134,7 +132,7 @@ class SConsInteractiveCmd(cmd.Cmd):
         print "*** Unknown command: %s" % argv[0]
 
     def onecmd(self, line):
-        line = string.strip(line)
+        line = line.strip()
         if not line:
             print self.lastcmd
             return self.emptyline()
@@ -144,7 +142,7 @@ class SConsInteractiveCmd(cmd.Cmd):
         elif line[0] == '?':
             line = 'help ' + line[1:]
         if os.sep == '\\':
-            line = string.replace(line, '\\', '\\\\')
+            line = line.replace('\\', '\\\\')
         argv = shlex.split(line)
         argv[0] = self.synonyms.get(argv[0], argv[0])
         if not argv[0]:
@@ -222,8 +220,8 @@ class SConsInteractiveCmd(cmd.Cmd):
 
         def get_unseen_children(node, parent, seen_nodes=seen_nodes):
             def is_unseen(node, seen_nodes=seen_nodes):
-                return not seen_nodes.has_key(node)
-            return filter(is_unseen, node.children(scan=1))
+                return node not in seen_nodes
+            return list(filter(is_unseen, node.children(scan=1)))
 
         def add_to_seen_nodes(node, parent, seen_nodes=seen_nodes):
             seen_nodes[node] = 1
@@ -247,9 +245,9 @@ class SConsInteractiveCmd(cmd.Cmd):
             walker = SCons.Node.Walker(node,
                                         kids_func=get_unseen_children,
                                         eval_func=add_to_seen_nodes)
-            n = walker.next()
+            n = walker.get_next()
             while n:
-                n = walker.next()
+                n = walker.get_next()
 
         for node in seen_nodes.keys():
             # Call node.clear() to clear most of the state
@@ -307,7 +305,7 @@ class SConsInteractiveCmd(cmd.Cmd):
 
     def _strip_initial_spaces(self, s):
         #lines = s.split('\n')
-        lines = string.split(s, '\n')
+        lines = s.split('\n')
         spaces = re.match(' *', lines[0]).group(0)
         #def strip_spaces(l):
         #    if l.startswith(spaces):
@@ -318,8 +316,8 @@ class SConsInteractiveCmd(cmd.Cmd):
             if l[:len(spaces)] == spaces:
                 l = l[len(spaces):]
             return l
-        lines = map(strip_spaces, lines)
-        return string.join(lines, '\n')
+        lines = list(map(strip_spaces, lines))
+        return '\n'.join(lines)
 
     def do_exit(self, argv):
         """\
diff --git a/engine/SCons/Script/Main.py b/engine/SCons/Script/Main.py
index 74a28f2..2bd1560 100644
--- a/engine/SCons/Script/Main.py
+++ b/engine/SCons/Script/Main.py
@@ -8,10 +8,11 @@ should not be, or be considered, part of the build engine.  If it's
 something that we expect other software to want to use, it should go in
 some other module.  If it's specific to the "scons" script invocation,
 it goes here.
-
 """
 
-#
+unsupported_python_version = (2, 3, 0)
+deprecated_python_version = (2, 4, 0)
+
 # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 The SCons Foundation
 #
 # Permission is hereby granted, free of charge, to any person obtaining
@@ -32,13 +33,12 @@ it goes here.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Script/Main.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Script/Main.py 5023 2010/06/14 22:05:46 scons"
+
+import SCons.compat
 
 import os
-import os.path
-import string
 import sys
 import time
 import traceback
@@ -89,7 +89,7 @@ progress_display = SCons.Util.DisplayEngine()
 first_command_start = None
 last_command_end = None
 
-class Progressor:
+class Progressor(object):
     prev = ''
     count = 0
     target_string = '$TARGET'
@@ -107,7 +107,7 @@ class Progressor:
             self.func = obj
         elif SCons.Util.is_List(obj):
             self.func = self.spinner
-        elif string.find(obj, self.target_string) != -1:
+        elif obj.find(self.target_string) != -1:
             self.func = self.replace_string
         else:
             self.func = self.string
@@ -132,7 +132,7 @@ class Progressor:
         self.write(self.obj)
 
     def replace_string(self, node):
-        self.write(string.replace(self.obj, self.target_string, str(node)))
+        self.write(self.obj.replace(self.target_string, str(node)))
 
     def __call__(self, node):
         self.count = self.count + 1
@@ -145,7 +145,7 @@ ProgressObject = SCons.Util.Null()
 
 def Progress(*args, **kw):
     global ProgressObject
-    ProgressObject = apply(Progressor, args, kw)
+    ProgressObject = Progressor(*args, **kw)
 
 # Task control.
 #
@@ -207,12 +207,10 @@ class BuildTask(SCons.Taskmaster.OutOfDateTask):
         t = self.targets[0]
         if self.top and not t.has_builder() and not t.side_effect:
             if not t.exists():
-                def classname(obj):
-                    return string.split(str(obj.__class__), '.')[-1]
-                if classname(t) in ('File', 'Dir', 'Entry'):
-                    errstr="Do not know how to make %s target `%s' (%s)." % (classname(t), t, t.abspath)
+                if t.__class__.__name__ in ('File', 'Dir', 'Entry'):
+                    errstr="Do not know how to make %s target `%s' (%s)." % (t.__class__.__name__, t, t.abspath)
                 else: # Alias or Python or ...
-                    errstr="Do not know how to make %s target `%s'." % (classname(t), t)
+                    errstr="Do not know how to make %s target `%s'." % (t.__class__.__name__, t)
                 sys.stderr.write("scons: *** " + errstr)
                 if not self.options.keep_going:
                     sys.stderr.write("  Stop.")
@@ -262,19 +260,16 @@ class BuildTask(SCons.Taskmaster.OutOfDateTask):
         node = buildError.node
         if not SCons.Util.is_List(node):
                 node = [ node ]
-        nodename = string.join(map(str, node), ', ')
+        nodename = ', '.join(map(str, node))
 
         errfmt = "scons: *** [%s] %s\n"
         sys.stderr.write(errfmt % (nodename, buildError))
 
         if (buildError.exc_info[2] and buildError.exc_info[1] and 
-           # TODO(1.5)
-           #not isinstance(
-           #    buildError.exc_info[1], 
-           #    (EnvironmentError, SCons.Errors.StopError, SCons.Errors.UserError))):
-           not isinstance(buildError.exc_info[1], EnvironmentError) and
-           not isinstance(buildError.exc_info[1], SCons.Errors.StopError) and
-           not isinstance(buildError.exc_info[1], SCons.Errors.UserError)):
+           not isinstance(
+               buildError.exc_info[1], 
+               (EnvironmentError, SCons.Errors.StopError,
+                            SCons.Errors.UserError))):
             type, value, trace = buildError.exc_info
             traceback.print_exception(type, value, trace)
         elif tb and print_stacktrace:
@@ -316,11 +311,7 @@ class CleanTask(SCons.Taskmaster.AlwaysTask):
                     display("Removed " + pathstr)
                 elif os.path.isdir(path) and not os.path.islink(path):
                     # delete everything in the dir
-                    entries = os.listdir(path)
-                    # Sort for deterministic output (os.listdir() Can
-                    # return entries in a random order).
-                    entries.sort()
-                    for e in entries:
+                    for e in sorted(os.listdir(path)):
                         p = os.path.join(path, e)
                         s = os.path.join(pathstr, e)
                         if os.path.isfile(p):
@@ -345,7 +336,7 @@ class CleanTask(SCons.Taskmaster.AlwaysTask):
             for t in self.targets:
                 if not t.isdir():
                     display("Removed " + str(t))
-        if SCons.Environment.CleanTargets.has_key(target):
+        if target in SCons.Environment.CleanTargets:
             files = SCons.Environment.CleanTargets[target]
             for f in files:
                 self.fs_delete(f.abspath, str(f), 0)
@@ -366,7 +357,7 @@ class CleanTask(SCons.Taskmaster.AlwaysTask):
                 else:
                     if removed:
                         display("Removed " + str(t))
-        if SCons.Environment.CleanTargets.has_key(target):
+        if target in SCons.Environment.CleanTargets:
             files = SCons.Environment.CleanTargets[target]
             for f in files:
                 self.fs_delete(f.abspath, str(f))
@@ -405,7 +396,7 @@ class QuestionTask(SCons.Taskmaster.AlwaysTask):
         pass
 
 
-class TreePrinter:
+class TreePrinter(object):
     def __init__(self, derived=False, prune=False, status=False):
         self.derived = derived
         self.prune = prune
@@ -414,7 +405,7 @@ class TreePrinter:
         return node.all_children()
     def get_derived_children(self, node):
         children = node.all_children(None)
-        return filter(lambda x: x.has_builder(), children)
+        return [x for x in children if x.has_builder()]
     def display(self, t):
         if self.derived:
             func = self.get_derived_children
@@ -425,13 +416,13 @@ class TreePrinter:
 
 
 def python_version_string():
-    return string.split(sys.version)[0]
+    return sys.version.split()[0]
 
 def python_version_unsupported(version=sys.version_info):
-    return version < (1, 5, 2)
+    return version < unsupported_python_version
 
 def python_version_deprecated(version=sys.version_info):
-    return version < (2, 4, 0)
+    return version < deprecated_python_version
 
 
 # Global variables
@@ -447,7 +438,7 @@ this_build_status = 0 # "exit status" of an individual build
 num_jobs = None
 delayed_warnings = []
 
-class FakeOptionParser:
+class FakeOptionParser(object):
     """
     A do-nothing option parser, used for the initial OptionsParser variable.
 
@@ -459,7 +450,7 @@ class FakeOptionParser:
     without blowing up.
 
     """
-    class FakeOptionValues:
+    class FakeOptionValues(object):
         def __getattr__(self, attr):
             return None
     values = FakeOptionValues()
@@ -469,9 +460,9 @@ class FakeOptionParser:
 OptionsParser = FakeOptionParser()
 
 def AddOption(*args, **kw):
-    if not kw.has_key('default'):
+    if 'default' not in kw:
         kw['default'] = None
-    result = apply(OptionsParser.add_local_option, args, kw)
+    result = OptionsParser.add_local_option(*args, **kw)
     return result
 
 def GetOption(name):
@@ -481,7 +472,7 @@ def SetOption(name, value):
     return OptionsParser.values.set_option(name, value)
 
 #
-class Stats:
+class Stats(object):
     def __init__(self):
         self.stats = []
         self.labels = []
@@ -501,26 +492,24 @@ class CountStats(Stats):
     def do_print(self):
         stats_table = {}
         for s in self.stats:
-            for n in map(lambda t: t[0], s):
+            for n in [t[0] for t in s]:
                 stats_table[n] = [0, 0, 0, 0]
         i = 0
         for s in self.stats:
             for n, c in s:
                 stats_table[n][i] = c
             i = i + 1
-        keys = stats_table.keys()
-        keys.sort()
         self.outfp.write("Object counts:\n")
         pre = ["   "]
         post = ["   %s\n"]
         l = len(self.stats)
-        fmt1 = string.join(pre + [' %7s']*l + post, '')
-        fmt2 = string.join(pre + [' %7d']*l + post, '')
+        fmt1 = ''.join(pre + [' %7s']*l + post)
+        fmt2 = ''.join(pre + [' %7d']*l + post)
         labels = self.labels[:l]
         labels.append(("", "Class"))
-        self.outfp.write(fmt1 % tuple(map(lambda x: x[0], labels)))
-        self.outfp.write(fmt1 % tuple(map(lambda x: x[1], labels)))
-        for k in keys:
+        self.outfp.write(fmt1 % tuple([x[0] for x in labels]))
+        self.outfp.write(fmt1 % tuple([x[1] for x in labels]))
+        for k in sorted(stats_table.keys()):
             r = stats_table[k][:l] + [k]
             self.outfp.write(fmt2 % tuple(r))
 
@@ -532,7 +521,7 @@ class MemStats(Stats):
         self.stats.append(SCons.Debug.memory())
     def do_print(self):
         fmt = 'Memory %-32s %12d\n'
-        for label, stats in map(None, self.labels, self.stats):
+        for label, stats in zip(self.labels, self.stats):
             self.outfp.write(fmt % (label, stats))
 
 memory_stats = MemStats()
@@ -563,7 +552,7 @@ def find_deepest_user_frame(tb):
     # of SCons:
     for frame in tb:
         filename = frame[0]
-        if string.find(filename, os.sep+'SCons'+os.sep) == -1:
+        if filename.find(os.sep+'SCons'+os.sep) == -1:
             return frame
     return tb[0]
 
@@ -598,7 +587,7 @@ def _scons_internal_warning(e):
     *current call stack* rather than sys.exc_info() to get our stack trace.
     This is used by the warnings framework to print warnings."""
     filename, lineno, routine, dummy = find_deepest_user_frame(traceback.extract_stack())
-    sys.stderr.write("\nscons: warning: %s\n" % e[0])
+    sys.stderr.write("\nscons: warning: %s\n" % e.args[0])
     sys.stderr.write('File "%s", line %d, in %s\n' % (filename, lineno, routine))
 
 def _scons_internal_error():
@@ -687,7 +676,7 @@ def _load_site_scons_dir(topdir, site_dir_name=None):
     site_dir = os.path.join(topdir.path, site_dir_name)
     if not os.path.exists(site_dir):
         if err_if_not_found:
-            raise SCons.Errors.UserError, "site dir %s not found."%site_dir
+            raise SCons.Errors.UserError("site dir %s not found."%site_dir)
         return
 
     site_init_filename = "site_init.py"
@@ -714,7 +703,7 @@ def _load_site_scons_dir(topdir, site_dir_name=None):
                     m = sys.modules['SCons.Script']
                 except Exception, e:
                     fmt = 'cannot import site_init.py: missing SCons.Script module %s'
-                    raise SCons.Errors.InternalError, fmt % repr(e)
+                    raise SCons.Errors.InternalError(fmt % repr(e))
                 try:
                     # This is the magic.
                     exec fp in m.__dict__
@@ -763,21 +752,8 @@ def _main(parser):
     # suppress) appropriate warnings about anything that might happen,
     # as configured by the user.
 
-    default_warnings = [ SCons.Warnings.CorruptSConsignWarning,
+    default_warnings = [ SCons.Warnings.WarningOnByDefault,
                          SCons.Warnings.DeprecatedWarning,
-                         SCons.Warnings.DuplicateEnvironmentWarning,
-                         SCons.Warnings.FutureReservedVariableWarning,
-                         SCons.Warnings.LinkWarning,
-                         SCons.Warnings.MissingSConscriptWarning,
-                         SCons.Warnings.NoMD5ModuleWarning,
-                         SCons.Warnings.NoMetaclassSupportWarning,
-                         SCons.Warnings.NoObjectCountWarning,
-                         SCons.Warnings.NoParallelSupportWarning,
-                         SCons.Warnings.MisleadingKeywordsWarning,
-                         SCons.Warnings.ReservedVariableWarning,
-                         SCons.Warnings.StackSizeWarning,
-                         SCons.Warnings.VisualVersionMismatch,
-                         SCons.Warnings.VisualCMissingWarning,
                        ]
 
     for warning in default_warnings:
@@ -855,7 +831,7 @@ def _main(parser):
             # Give them the options usage now, before we fail
             # trying to read a non-existent SConstruct file.
             raise SConsPrintHelpException
-        raise SCons.Errors.UserError, "No SConstruct file found."
+        raise SCons.Errors.UserError("No SConstruct file found.")
 
     if scripts[0] == "-":
         d = fs.getcwd()
@@ -955,7 +931,7 @@ def _main(parser):
     # $SCONSFLAGS, or in the SConscript file, then the search through
     # the list of deprecated warning classes will find that disabling
     # first and not issue the warning.
-    SCons.Warnings.enableWarningClass(SCons.Warnings.PythonVersionWarning)
+    #SCons.Warnings.enableWarningClass(SCons.Warnings.PythonVersionWarning)
     SCons.Warnings.process_warn_strings(options.warn)
 
     # Now that we've read the SConscript files, we can check for the
@@ -1087,7 +1063,7 @@ def _build_targets(fs, options, targets, target_top):
                         # or not a file, so go ahead and keep it as a default
                         # target and let the engine sort it out:
                         return 1                
-                d = filter(check_dir, SCons.Script.DEFAULT_TARGETS)
+                d = list(filter(check_dir, SCons.Script.DEFAULT_TARGETS))
                 SCons.Script.DEFAULT_TARGETS[:] = d
                 target_top = None
                 lookup_top = None
@@ -1122,7 +1098,7 @@ def _build_targets(fs, options, targets, target_top):
                 node = None
         return node
 
-    nodes = filter(None, map(Entry, targets))
+    nodes = [_f for _f in map(Entry, targets) if _f]
 
     task_class = BuildTask      # default action is to build targets
     opening_message = "Building targets ..."
@@ -1154,7 +1130,7 @@ def _build_targets(fs, options, targets, target_top):
             # This is cribbed from the implementation of
             # random.shuffle() in Python 2.X.
             d = dependencies
-            for i in xrange(len(d)-1, 0, -1):
+            for i in range(len(d)-1, 0, -1):
                 j = int(random.random() * (i+1))
                 d[i], d[j] = d[j], d[i]
             return d
@@ -1224,18 +1200,16 @@ def _build_targets(fs, options, targets, target_top):
 
 def _exec_main(parser, values):
     sconsflags = os.environ.get('SCONSFLAGS', '')
-    all_args = string.split(sconsflags) + sys.argv[1:]
+    all_args = sconsflags.split() + sys.argv[1:]
 
     options, args = parser.parse_args(all_args, values)
 
-    if type(options.debug) == type([]) and "pdb" in options.debug:
+    if isinstance(options.debug, list) and "pdb" in options.debug:
         import pdb
         pdb.Pdb().runcall(_main, parser)
     elif options.profile_file:
-        try:
-            from cProfile import Profile
-        except ImportError, e:
-            from profile import Profile
+        # compat layer imports "cProfile" for us if it's available.
+        from profile import Profile
 
         # Some versions of Python 2.4 shipped a profiler that had the
         # wrong 'c_exception' entry in its dispatch table.  Make sure
@@ -1285,7 +1259,7 @@ def main():
         pass 
     parts.append(version_string("engine", SCons))
     parts.append("Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 The SCons Foundation")
-    version = string.join(parts, '')
+    version = ''.join(parts)
 
     import SConsOptions
     parser = SConsOptions.Parser(version)
diff --git a/engine/SCons/Script/SConsOptions.py b/engine/SCons/Script/SConsOptions.py
index 545162b..913a6ee 100644
--- a/engine/SCons/Script/SConsOptions.py
+++ b/engine/SCons/Script/SConsOptions.py
@@ -21,20 +21,14 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Script/SConsOptions.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Script/SConsOptions.py 5023 2010/06/14 22:05:46 scons"
 
 import optparse
 import re
-import string
 import sys
 import textwrap
 
-try:
-    no_hyphen_re = re.compile(r'(\s+|(?<=[\w\!\"\'\&\.\,\?])-{2,}(?=\w))')
-except re.error:
-    # Pre-2.0 Python versions don't have the (?<= negative
-    # look-behind assertion.
-    no_hyphen_re = re.compile(r'(\s+|-*\w{2,}-(?=\w{2,}))')
+no_hyphen_re = re.compile(r'(\s+|(?<=[\w\!\"\'\&\.\,\?])-{2,}(?=\w))')
 
 try:
     from gettext import gettext
@@ -55,9 +49,10 @@ def diskcheck_convert(value):
     if value is None:
         return []
     if not SCons.Util.is_List(value):
-        value = string.split(value, ',')
+        value = value.split(',')
     result = []
-    for v in map(string.lower, value):
+    for v in value:
+        v = v.lower()
         if v == 'all':
             result = diskcheck_all
         elif v == 'none':
@@ -65,7 +60,7 @@ def diskcheck_convert(value):
         elif v in diskcheck_all:
             result.append(v)
         else:
-            raise ValueError, v
+            raise ValueError(v)
     return result
 
 class SConsValues(optparse.Values):
@@ -139,7 +134,7 @@ class SConsValues(optparse.Values):
         Sets an option from an SConscript file.
         """
         if not name in self.settable:
-            raise SCons.Errors.UserError, "This option is not settable from a SConscript file: %s"%name
+            raise SCons.Errors.UserError("This option is not settable from a SConscript file: %s"%name)
 
         if name == 'num_jobs':
             try:
@@ -147,19 +142,19 @@ class SConsValues(optparse.Values):
                 if value < 1:
                     raise ValueError
             except ValueError:
-                raise SCons.Errors.UserError, "A positive integer is required: %s"%repr(value)
+                raise SCons.Errors.UserError("A positive integer is required: %s"%repr(value))
         elif name == 'max_drift':
             try:
                 value = int(value)
             except ValueError:
-                raise SCons.Errors.UserError, "An integer is required: %s"%repr(value)
+                raise SCons.Errors.UserError("An integer is required: %s"%repr(value))
         elif name == 'duplicate':
             try:
                 value = str(value)
             except ValueError:
-                raise SCons.Errors.UserError, "A string is required: %s"%repr(value)
+                raise SCons.Errors.UserError("A string is required: %s"%repr(value))
             if not value in SCons.Node.FS.Valid_Duplicates:
-                raise SCons.Errors.UserError, "Not a valid duplication style: %s" % value
+                raise SCons.Errors.UserError("Not a valid duplication style: %s" % value)
             # Set the duplicate style right away so it can affect linking
             # of SConscript files.
             SCons.Node.FS.set_duplicate(value)
@@ -167,8 +162,8 @@ class SConsValues(optparse.Values):
             try:
                 value = diskcheck_convert(value)
             except ValueError, v:
-                raise SCons.Errors.UserError, "Not a valid diskcheck value: %s"%v
-            if not self.__dict__.has_key('diskcheck'):
+                raise SCons.Errors.UserError("Not a valid diskcheck value: %s"%v)
+            if 'diskcheck' not in self.__dict__:
                 # No --diskcheck= option was specified on the command line.
                 # Set this right away so it can affect the rest of the
                 # file/Node lookups while processing the SConscript files.
@@ -177,12 +172,12 @@ class SConsValues(optparse.Values):
             try:
                 value = int(value)
             except ValueError:
-                raise SCons.Errors.UserError, "An integer is required: %s"%repr(value)
+                raise SCons.Errors.UserError("An integer is required: %s"%repr(value))
         elif name == 'md5_chunksize':
             try:
                 value = int(value)
             except ValueError:
-                raise SCons.Errors.UserError, "An integer is required: %s"%repr(value)
+                raise SCons.Errors.UserError("An integer is required: %s"%repr(value))
         elif name == 'warn':
             if SCons.Util.is_String(value):
                 value = [value]
@@ -197,7 +192,7 @@ class SConsOption(optparse.Option):
             if self.nargs in (1, '?'):
                 return self.check_value(opt, value)
             else:
-                return tuple(map(lambda v, o=opt, s=self: s.check_value(o, v), value))
+                return tuple([self.check_value(opt, v) for v in value])
 
     def process(self, opt, value, values, parser):
 
@@ -214,7 +209,7 @@ class SConsOption(optparse.Option):
     def _check_nargs_optional(self):
         if self.nargs == '?' and self._short_opts:
             fmt = "option %s: nargs='?' is incompatible with short options"
-            raise SCons.Errors.UserError, fmt % self._short_opts[0]
+            raise SCons.Errors.UserError(fmt % self._short_opts[0])
 
     try:
         _orig_CONST_ACTIONS = optparse.Option.CONST_ACTIONS
@@ -292,7 +287,7 @@ class SConsOptionParser(optparse.OptionParser):
         # Value explicitly attached to arg?  Pretend it's the next
         # argument.
         if "=" in arg:
-            (opt, next_arg) = string.split(arg, "=", 1)
+            (opt, next_arg) = arg.split("=", 1)
             rargs.insert(0, next_arg)
             had_explicit_value = True
         else:
@@ -356,7 +351,7 @@ class SConsOptionParser(optparse.OptionParser):
             group = self.add_option_group(group)
             self.local_option_group = group
 
-        result = apply(group.add_option, args, kw)
+        result = group.add_option(*args, **kw)
 
         if result:
             # The option was added succesfully.  We now have to add the
@@ -461,7 +456,7 @@ class SConsIndentedHelpFormatter(optparse.IndentedHelpFormatter):
                 result.append("%*s%s\n" % (self.help_position, "", line))
         elif opts[-1] != "\n":
             result.append("\n")
-        return string.join(result, "")
+        return "".join(result)
 
     # For consistent help output across Python versions, we provide a
     # subclass copy of format_option_strings() and these two variables.
@@ -473,7 +468,7 @@ class SConsIndentedHelpFormatter(optparse.IndentedHelpFormatter):
     def format_option_strings(self, option):
         """Return a comma-separated list of option strings & metavariables."""
         if option.takes_value():
-            metavar = option.metavar or string.upper(option.dest)
+            metavar = option.metavar or option.dest.upper()
             short_opts = []
             for sopt in option._short_opts:
                 short_opts.append(self._short_opt_fmt % (sopt, metavar))
@@ -489,7 +484,7 @@ class SConsIndentedHelpFormatter(optparse.IndentedHelpFormatter):
         else:
             opts = long_opts + short_opts
 
-        return string.join(opts, ", ")
+        return ", ".join(opts)
 
 def Parser(version):
     """
@@ -580,7 +575,7 @@ def Parser(version):
             raise OptionValueError("Warning:  %s is not a valid config type" % value)
         setattr(parser.values, option.dest, value)
     opt_config_help = "Controls Configure subsystem: %s." \
-                      % string.join(config_options, ", ")
+                      % ", ".join(config_options)
     op.add_option('--config',
                   nargs=1, type="string",
                   dest="config", default="auto",
@@ -604,7 +599,7 @@ def Parser(version):
     debug_options = ["count", "explain", "findlibs",
                      "includes", "memoizer", "memory", "objects",
                      "pdb", "presub", "stacktrace",
-                     "time"] + deprecated_debug_options.keys()
+                     "time"] + list(deprecated_debug_options.keys())
 
     def opt_debug(option, opt, value, parser,
                   debug_options=debug_options,
@@ -618,12 +613,12 @@ def Parser(version):
                     parser.values.delayed_warnings = []
                 msg = deprecated_debug_options[value]
                 w = "The --debug=%s option is deprecated%s." % (value, msg)
-                t = (SCons.Warnings.DeprecatedWarning, w)
+                t = (SCons.Warnings.DeprecatedDebugOptionsWarning, w)
                 parser.values.delayed_warnings.append(t)
         else:
             raise OptionValueError("Warning:  %s is not a valid debug type" % value)
     opt_debug_help = "Print various types of debugging information: %s." \
-                     % string.join(debug_options, ", ")
+                     % ", ".join(debug_options)
     op.add_option('--debug',
                   nargs=1, type="string",
                   dest="debug", default=[],
@@ -654,7 +649,7 @@ def Parser(version):
         SCons.Node.FS.set_duplicate(value)
 
     opt_duplicate_help = "Set the preferred duplication methods. Must be one of " \
-                         + string.join(SCons.Node.FS.Valid_Duplicates, ", ")
+                         + ", ".join(SCons.Node.FS.Valid_Duplicates)
 
     op.add_option('--duplicate',
                   nargs=1, type="string",
@@ -802,7 +797,7 @@ def Parser(version):
     def opt_tree(option, opt, value, parser, tree_options=tree_options):
         import Main
         tp = Main.TreePrinter()
-        for o in string.split(value, ','):
+        for o in value.split(','):
             if o == 'all':
                 tp.derived = False
             elif o == 'derived':
@@ -816,7 +811,7 @@ def Parser(version):
         parser.values.tree_printers.append(tp)
 
     opt_tree_help = "Print a dependency tree in various formats: %s." \
-                    % string.join(tree_options, ", ")
+                    % ", ".join(tree_options)
 
     op.add_option('--tree',
                   nargs=1, type="string",
@@ -846,7 +841,7 @@ def Parser(version):
 
     def opt_warn(option, opt, value, parser, tree_options=tree_options):
         if SCons.Util.is_String(value):
-            value = string.split(value, ',')
+            value = value.split(',')
         parser.values.warn.extend(value)
 
     op.add_option('--warn', '--warning',
diff --git a/engine/SCons/Script/SConscript.py b/engine/SCons/Script/SConscript.py
index 98a3126..5a22db7 100644
--- a/engine/SCons/Script/SConscript.py
+++ b/engine/SCons/Script/SConscript.py
@@ -26,9 +26,9 @@ files.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
+from __future__ import division
 
-__revision__ = "src/engine/SCons/Script/SConscript.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Script/SConscript.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons
 import SCons.Action
@@ -45,14 +45,12 @@ import SCons.Script.Main
 import SCons.Tool
 import SCons.Util
 
+import collections
 import os
 import os.path
 import re
-import string
 import sys
 import traceback
-import types
-import UserList
 
 # The following variables used to live in this module.  Some
 # SConscript files out there may have referred to them directly as
@@ -80,7 +78,7 @@ sconscript_chdir = 1
 def get_calling_namespaces():
     """Return the locals and globals for the function that called
     into this module in the current call stack."""
-    try: 1/0
+    try: 1//0
     except ZeroDivisionError: 
         # Don't start iterating with the current stack-frame to
         # prevent creating reference cycles (f_back is safe).
@@ -116,11 +114,11 @@ def compute_exports(exports):
                 except KeyError:
                     retval[export] = glob[export]
     except KeyError, x:
-        raise SCons.Errors.UserError, "Export of non-existent variable '%s'"%x
+        raise SCons.Errors.UserError("Export of non-existent variable '%s'"%x)
 
     return retval
 
-class Frame:
+class Frame(object):
     """A frame on the SConstruct/SConscript call stack"""
     def __init__(self, fs, exports, sconscript):
         self.globals = BuildDefaultGlobals()
@@ -145,10 +143,10 @@ def Return(*vars, **kw):
     try:
         fvars = SCons.Util.flatten(vars)
         for var in fvars:
-            for v in string.split(var):
+            for v in var.split():
                 retval.append(call_stack[-1].globals[v])
     except KeyError, x:
-        raise SCons.Errors.UserError, "Return of non-existent variable '%s'"%x
+        raise SCons.Errors.UserError("Return of non-existent variable '%s'"%x)
 
     if len(retval) == 1:
         call_stack[-1].retval = retval[0]
@@ -312,7 +310,7 @@ def SConscript_exception(file=sys.stderr):
     up to where we exec the SConscript."""
     exc_type, exc_value, exc_tb = sys.exc_info()
     tb = exc_tb
-    while tb and not tb.tb_frame.f_locals.has_key(stack_bottom):
+    while tb and stack_bottom not in tb.tb_frame.f_locals:
         tb = tb.tb_next
     if not tb:
         # We did not find our exec statement, so this was actually a bug
@@ -334,11 +332,11 @@ def annotate(node):
     """Annotate a node with the stack frame describing the
     SConscript file and line number that created it."""
     tb = sys.exc_info()[2]
-    while tb and not tb.tb_frame.f_locals.has_key(stack_bottom):
+    while tb and stack_bottom not in tb.tb_frame.f_locals:
         tb = tb.tb_next
     if not tb:
         # We did not find any exec of an SConscript file: what?!
-        raise SCons.Errors.InternalError, "could not find SConscript stack frame"
+        raise SCons.Errors.InternalError("could not find SConscript stack frame")
     node.creator = traceback.extract_stack(tb)[0]
 
 # The following line would cause each Node to be annotated using the
@@ -369,7 +367,7 @@ class SConsEnvironment(SCons.Environment.Base):
 
         This is complicated by the fact that a version string can be
         something like 3.2b1."""
-        version = string.split(string.split(version_string, ' ')[0], '.')
+        version = version_string.split(' ')[0].split('.')
         v_major = int(version[0])
         v_minor = int(re.match('\d+', version[1]).group())
         if len(version) >= 3:
@@ -380,7 +378,7 @@ class SConsEnvironment(SCons.Environment.Base):
 
     def _get_SConscript_filenames(self, ls, kw):
         """
-        Convert the parameters passed to # SConscript() calls into a list
+        Convert the parameters passed to SConscript() calls into a list
         of files and export variables.  If the parameters are invalid,
         throws SCons.Errors.UserError. Returns a tuple (l, e) where l
         is a list of SConscript filenames and e is a list of exports.
@@ -391,16 +389,15 @@ class SConsEnvironment(SCons.Environment.Base):
             try:
                 dirs = kw["dirs"]
             except KeyError:
-                raise SCons.Errors.UserError, \
-                      "Invalid SConscript usage - no parameters"
+                raise SCons.Errors.UserError("Invalid SConscript usage - no parameters")
 
             if not SCons.Util.is_List(dirs):
                 dirs = [ dirs ]
-            dirs = map(str, dirs)
+            dirs = list(map(str, dirs))
 
             name = kw.get('name', 'SConscript')
 
-            files = map(lambda n, name = name: os.path.join(n, name), dirs)
+            files = [os.path.join(n, name) for n in dirs]
 
         elif len(ls) == 1:
 
@@ -413,8 +410,7 @@ class SConsEnvironment(SCons.Environment.Base):
 
         else:
 
-            raise SCons.Errors.UserError, \
-                  "Invalid SConscript() usage - too many arguments"
+            raise SCons.Errors.UserError("Invalid SConscript() usage - too many arguments")
 
         if not SCons.Util.is_List(files):
             files = [ files ]
@@ -425,8 +421,7 @@ class SConsEnvironment(SCons.Environment.Base):
         variant_dir = kw.get('variant_dir') or kw.get('build_dir')
         if variant_dir:
             if len(files) != 1:
-                raise SCons.Errors.UserError, \
-                    "Invalid SConscript() usage - can only specify one SConscript with a variant_dir"
+                raise SCons.Errors.UserError("Invalid SConscript() usage - can only specify one SConscript with a variant_dir")
             duplicate = kw.get('duplicate', 1)
             src_dir = kw.get('src_dir')
             if not src_dir:
@@ -457,9 +452,9 @@ class SConsEnvironment(SCons.Environment.Base):
 
     def Configure(self, *args, **kw):
         if not SCons.Script.sconscript_reading:
-            raise SCons.Errors.UserError, "Calling Configure from Builders is not supported."
+            raise SCons.Errors.UserError("Calling Configure from Builders is not supported.")
         kw['_depth'] = kw.get('_depth', 0) + 1
-        return apply(SCons.Environment.Base.Configure, (self,)+args, kw)
+        return SCons.Environment.Base.Configure(self, *args, **kw)
 
     def Default(self, *targets):
         SCons.Script._Set_Default_Targets(self, targets)
@@ -484,7 +479,7 @@ class SConsEnvironment(SCons.Environment.Base):
         except AttributeError:
             python_ver = self._get_major_minor_revision(sys.version)[:2]
         if python_ver < (major, minor):
-            v = string.split(sys.version, " ", 1)[0]
+            v = sys.version.split(" ", 1)[0]
             print "Python %d.%d or greater required, but you have Python %s" %(major,minor,v)
             sys.exit(2)
 
@@ -520,21 +515,24 @@ class SConsEnvironment(SCons.Environment.Base):
                         globals.update(global_exports)
                         globals.update(exports)
                     else:
-                        if exports.has_key(v):
+                        if v in exports:
                             globals[v] = exports[v]
                         else:
                             globals[v] = global_exports[v]
         except KeyError,x:
-            raise SCons.Errors.UserError, "Import of non-existent variable '%s'"%x
+            raise SCons.Errors.UserError("Import of non-existent variable '%s'"%x)
 
     def SConscript(self, *ls, **kw):
+        if 'build_dir' in kw:
+            msg = """The build_dir keyword has been deprecated; use the variant_dir keyword instead."""
+            SCons.Warnings.warn(SCons.Warnings.DeprecatedBuildDirWarning, msg)
         def subst_element(x, subst=self.subst):
             if SCons.Util.is_List(x):
-                x = map(subst, x)
+                x = list(map(subst, x))
             else:
                 x = subst(x)
             return x
-        ls = map(subst_element, ls)
+        ls = list(map(subst_element, ls))
         subst_kw = {}
         for key, val in kw.items():
             if SCons.Util.is_String(val):
@@ -550,7 +548,7 @@ class SConsEnvironment(SCons.Environment.Base):
 
         files, exports = self._get_SConscript_filenames(ls, subst_kw)
         subst_kw['exports'] = exports
-        return apply(_SConscript, [self.fs,] + files, subst_kw)
+        return _SConscript(self.fs, *files, **subst_kw)
 
     def SConscriptChdir(self, flag):
         global sconscript_chdir
@@ -567,9 +565,9 @@ SCons.Environment.Environment = SConsEnvironment
 
 def Configure(*args, **kw):
     if not SCons.Script.sconscript_reading:
-        raise SCons.Errors.UserError, "Calling Configure from Builders is not supported."
+        raise SCons.Errors.UserError("Calling Configure from Builders is not supported.")
     kw['_depth'] = 1
-    return apply(SCons.SConf.SConf, args, kw)
+    return SCons.SConf.SConf(*args, **kw)
 
 # It's very important that the DefaultEnvironmentCall() class stay in this
 # file, with the get_calling_namespaces() function, the compute_exports()
@@ -595,7 +593,7 @@ def get_DefaultEnvironmentProxy():
         _DefaultEnvironmentProxy = SCons.Environment.NoSubstitutionProxy(default_env)
     return _DefaultEnvironmentProxy
 
-class DefaultEnvironmentCall:
+class DefaultEnvironmentCall(object):
     """A class that implements "global function" calls of
     Environment methods by fetching the specified method from the
     DefaultEnvironment's class.  Note that this uses an intermediate
@@ -613,7 +611,7 @@ class DefaultEnvironmentCall:
     def __call__(self, *args, **kw):
         env = self.factory()
         method = getattr(env, self.method_name)
-        return apply(method, args, kw)
+        return method(*args, **kw)
 
 
 def BuildDefaultGlobals():
@@ -629,7 +627,7 @@ def BuildDefaultGlobals():
         import SCons.Script
         d = SCons.Script.__dict__
         def not_a_module(m, d=d, mtype=type(SCons.Script)):
-             return type(d[m]) != mtype
+             return not isinstance(d[m], mtype)
         for m in filter(not_a_module, dir(SCons.Script)):
              GlobalDict[m] = d[m]
 
diff --git a/engine/SCons/Script/__init__.py b/engine/SCons/Script/__init__.py
index 97af6da..b5b5222 100644
--- a/engine/SCons/Script/__init__.py
+++ b/engine/SCons/Script/__init__.py
@@ -34,15 +34,14 @@ it goes here.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Script/__init__.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Script/__init__.py 5023 2010/06/14 22:05:46 scons"
 
 import time
 start_time = time.time()
 
+import collections
 import os
-import string
 import sys
-import UserList
 
 # Special chicken-and-egg handling of the "--debug=memoizer" flag:
 #
@@ -58,16 +57,15 @@ import UserList
 # the "--debug=memoizer" flag and enable Memoizer before we import any
 # of the other modules that use it.
 
-_args = sys.argv + string.split(os.environ.get('SCONSFLAGS', ''))
+_args = sys.argv + os.environ.get('SCONSFLAGS', '').split()
 if "--debug=memoizer" in _args:
     import SCons.Memoize
     import SCons.Warnings
     try:
         SCons.Memoize.EnableMemoization()
     except SCons.Warnings.Warning:
-        # Some warning was thrown (inability to --debug=memoizer on
-        # Python 1.5.2 because it doesn't have metaclasses).  Arrange
-        # for it to be displayed or not after warnings are configured.
+        # Some warning was thrown.  Arrange for it to be displayed
+        # or not after warnings are configured.
         import Main
         exc_type, exc_value, tb = sys.exc_info()
         Main.delayed_warnings.append((exc_type, exc_value))
@@ -184,7 +182,7 @@ CScan                   = SCons.Defaults.CScan
 DefaultEnvironment      = SCons.Defaults.DefaultEnvironment
 
 # Other variables we provide.
-class TargetList(UserList.UserList):
+class TargetList(collections.UserList):
     def _do_nothing(self, *args, **kw):
         pass
     def _add_Default(self, list):
@@ -211,7 +209,7 @@ _build_plus_default = TargetList()
 
 def _Add_Arguments(alist):
     for arg in alist:
-        a, b = string.split(arg, '=', 1)
+        a, b = arg.split('=', 1)
         ARGUMENTS[a] = b
         ARGLIST.append((a, b))
 
diff --git a/engine/SCons/Sig.py b/engine/SCons/Sig.py
index 1da6ccb..49c00bf 100644
--- a/engine/SCons/Sig.py
+++ b/engine/SCons/Sig.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Sig.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Sig.py 5023 2010/06/14 22:05:46 scons"
 
 __doc__ = """Place-holder for the old SCons.Sig module hierarchy
 
@@ -40,7 +40,7 @@ import SCons.Warnings
 msg = 'The SCons.Sig module no longer exists.\n' \
       '    Remove the following "import SCons.Sig" line to eliminate this warning:'
 
-SCons.Warnings.warn(SCons.Warnings.DeprecatedWarning, msg)
+SCons.Warnings.warn(SCons.Warnings.DeprecatedSigModuleWarning, msg)
 
 default_calc = None
 default_module = None
diff --git a/engine/SCons/Subst.py b/engine/SCons/Subst.py
index fe18f08..d9b029a 100644
--- a/engine/SCons/Subst.py
+++ b/engine/SCons/Subst.py
@@ -25,15 +25,11 @@ SCons string substitution.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Subst.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Subst.py 5023 2010/06/14 22:05:46 scons"
 
+import collections
 import re
-import string
-import types
-import UserList
-import UserString
 
 import SCons.Errors
 
@@ -50,19 +46,19 @@ AllowableExceptions = (IndexError, NameError)
 
 def SetAllowableExceptions(*excepts):
     global AllowableExceptions
-    AllowableExceptions = filter(None, excepts)
+    AllowableExceptions = [_f for _f in excepts if _f]
 
 def raise_exception(exception, target, s):
     name = exception.__class__.__name__
     msg = "%s `%s' trying to evaluate `%s'" % (name, exception, s)
     if target:
-        raise SCons.Errors.BuildError, (target[0], msg)
+        raise SCons.Errors.BuildError(target[0], msg)
     else:
-        raise SCons.Errors.UserError, msg
+        raise SCons.Errors.UserError(msg)
 
 
 
-class Literal:
+class Literal(object):
     """A wrapper for a string.  If you use this object wrapped
     around a string, then it will be interpreted as literal.
     When passed to the command interpreter, all special
@@ -82,7 +78,7 @@ class Literal:
     def is_literal(self):
         return 1
 
-class SpecialAttrWrapper:
+class SpecialAttrWrapper(object):
     """This is a wrapper for what we call a 'Node special attribute.'
     This is any of the attributes of a Node that we can reference from
     Environment variable substitution, such as $TARGET.abspath or
@@ -121,7 +117,7 @@ def quote_spaces(arg):
     else:
         return str(arg)
 
-class CmdStringHolder(UserString.UserString):
+class CmdStringHolder(collections.UserString):
     """This is a special class used to hold strings generated by
     scons_subst() and scons_subst_list().  It defines a special method
     escape().  When passed a function with an escape algorithm for a
@@ -129,7 +125,7 @@ class CmdStringHolder(UserString.UserString):
     proper escape sequences inserted.
     """
     def __init__(self, cmd, literal=None):
-        UserString.UserString.__init__(self, cmd)
+        collections.UserString.__init__(self, cmd)
         self.literal = literal
 
     def is_literal(self):
@@ -152,7 +148,7 @@ class CmdStringHolder(UserString.UserString):
         else:
             return self.data
 
-def escape_list(list, escape_func):
+def escape_list(mylist, escape_func):
     """Escape a list of arguments by running the specified escape_func
     on every object in the list that has an escape() method."""
     def escape(obj, escape_func=escape_func):
@@ -162,9 +158,9 @@ def escape_list(list, escape_func):
             return obj
         else:
             return e(escape_func)
-    return map(escape, list)
+    return list(map(escape, mylist))
 
-class NLWrapper:
+class NLWrapper(object):
     """A wrapper class that delays turning a list of sources or targets
     into a NodeList until it's needed.  The specified function supplied
     when the object is initialized is responsible for turning raw nodes
@@ -183,28 +179,28 @@ class NLWrapper:
     def _return_nodelist(self):
         return self.nodelist
     def _gen_nodelist(self):
-        list = self.list
-        if list is None:
-            list = []
-        elif not is_Sequence(list):
-            list = [list]
+        mylist = self.list
+        if mylist is None:
+            mylist = []
+        elif not is_Sequence(mylist):
+            mylist = [mylist]
         # The map(self.func) call is what actually turns
         # a list into appropriate proxies.
-        self.nodelist = SCons.Util.NodeList(map(self.func, list))
+        self.nodelist = SCons.Util.NodeList(list(map(self.func, mylist)))
         self._create_nodelist = self._return_nodelist
         return self.nodelist
     _create_nodelist = _gen_nodelist
     
 
-class Targets_or_Sources(UserList.UserList):
+class Targets_or_Sources(collections.UserList):
     """A class that implements $TARGETS or $SOURCES expansions by in turn
     wrapping a NLWrapper.  This class handles the different methods used
     to access the list, calling the NLWrapper to create proxies on demand.
 
-    Note that we subclass UserList.UserList purely so that the
+    Note that we subclass collections.UserList purely so that the
     is_Sequence() function will identify an object of this class as
     a list during variable expansion.  We're not really using any
-    UserList.UserList methods in practice.
+    collections.UserList methods in practice.
     """
     def __init__(self, nl):
         self.nl = nl
@@ -225,7 +221,7 @@ class Targets_or_Sources(UserList.UserList):
         nl = self.nl._create_nodelist()
         return repr(nl)
 
-class Target_or_Source:
+class Target_or_Source(object):
     """A class that implements $TARGET or $SOURCE expansions by in turn
     wrapping a NLWrapper.  This class handles the different methods used
     to access an individual proxy Node, calling the NLWrapper to create
@@ -240,7 +236,7 @@ class Target_or_Source:
         except IndexError:
             # If there is nothing in the list, then we have no attributes to
             # pass through, so raise AttributeError for everything.
-            raise AttributeError, "NodeList has no attribute: %s" % attr
+            raise AttributeError("NodeList has no attribute: %s" % attr)
         return getattr(nl0, attr)
     def __str__(self):
         nl = self.nl._create_nodelist()
@@ -256,9 +252,6 @@ class Target_or_Source:
 class NullNodeList(SCons.Util.NullSeq):
   def __call__(self, *args, **kwargs): return ''
   def __str__(self): return ''
-  # TODO(1.5):  unneeded after new-style classes introduce iterators
-  def __getitem__(self, i):
-      raise IndexError
 
 NullNodesList = NullNodeList()
 
@@ -344,7 +337,7 @@ _regex_remove = [ _rm, None, _remove ]
 
 def _rm_list(list):
     #return [ l for l in list if not l in ('$(', '$)') ]
-    return filter(lambda l: not l in ('$(', '$)'), list)
+    return [l for l in list if not l in ('$(', '$)')]
 
 def _remove_list(list):
     result = []
@@ -399,10 +392,10 @@ def scons_subst(strSubst, env, mode=SUBST_RAW, target=None, source=None, gvars={
     handles separating command lines into lists of arguments, so see
     that function if that's what you're looking for.
     """
-    if type(strSubst) == types.StringType and string.find(strSubst, '$') < 0:
+    if isinstance(strSubst, str) and strSubst.find('$') < 0:
         return strSubst
 
-    class StringSubber:
+    class StringSubber(object):
         """A class to construct the results of a scons_subst() call.
 
         This binds a specific construction environment, mode, target and
@@ -438,7 +431,7 @@ def scons_subst(strSubst, env, mode=SUBST_RAW, target=None, source=None, gvars={
                     return s
                 else:
                     key = s[1:]
-                    if key[0] == '{' or string.find(key, '.') >= 0:
+                    if key[0] == '{' or key.find('.') >= 0:
                         if key[0] == '{':
                             key = key[1:-1]
                         try:
@@ -450,9 +443,9 @@ def scons_subst(strSubst, env, mode=SUBST_RAW, target=None, source=None, gvars={
                                 return ''
                             raise_exception(e, lvars['TARGETS'], s)
                     else:
-                        if lvars.has_key(key):
+                        if key in lvars:
                             s = lvars[key]
-                        elif self.gvars.has_key(key):
+                        elif key in self.gvars:
                             s = self.gvars[key]
                         elif not NameError in AllowableExceptions:
                             raise_exception(NameError(key), lvars['TARGETS'], s)
@@ -472,13 +465,13 @@ def scons_subst(strSubst, env, mode=SUBST_RAW, target=None, source=None, gvars={
                     # are probably more the exception than the norm,
                     # so it should be tolerable for now.
                     lv = lvars.copy()
-                    var = string.split(key, '.')[0]
+                    var = key.split('.')[0]
                     lv[var] = ''
                     return self.substitute(s, lv)
             elif is_Sequence(s):
                 def func(l, conv=self.conv, substitute=self.substitute, lvars=lvars):
                     return conv(substitute(l, lvars))
-                return map(func, s)
+                return list(map(func, s))
             elif callable(s):
                 try:
                     s = s(target=lvars['TARGETS'],
@@ -507,8 +500,8 @@ def scons_subst(strSubst, env, mode=SUBST_RAW, target=None, source=None, gvars={
             if is_String(args) and not isinstance(args, CmdStringHolder):
                 args = str(args)        # In case it's a UserString.
                 try:
-                    def sub_match(match, conv=self.conv, expand=self.expand, lvars=lvars):
-                        return conv(expand(match.group(1), lvars))
+                    def sub_match(match):
+                        return self.conv(self.expand(match.group(1), lvars))
                     result = _dollar_exps.sub(sub_match, args)
                 except TypeError:
                     # If the internal conversion routine doesn't return
@@ -523,7 +516,7 @@ def scons_subst(strSubst, env, mode=SUBST_RAW, target=None, source=None, gvars={
                     if len(result) == 1:
                         result = result[0]
                     else:
-                        result = string.join(map(str, result), '')
+                        result = ''.join(map(str, result))
                 return result
             else:
                 return self.expand(args, lvars)
@@ -540,7 +533,7 @@ def scons_subst(strSubst, env, mode=SUBST_RAW, target=None, source=None, gvars={
     # If we dropped that behavior (or found another way to cover it),
     # we could get rid of this call completely and just rely on the
     # Executor setting the variables.
-    if not lvars.has_key('TARGET'):
+    if 'TARGET' not in lvars:
         d = subst_dict(target, source)
         if d:
             lvars = lvars.copy()
@@ -571,7 +564,7 @@ def scons_subst(strSubst, env, mode=SUBST_RAW, target=None, source=None, gvars={
         if mode != SUBST_RAW:
             # Compress strings of white space characters into
             # a single space.
-            result = string.strip(_space_sep.sub(' ', result))
+            result = _space_sep.sub(' ', result).strip()
     elif is_Sequence(result):
         remove = _list_remove[mode]
         if remove:
@@ -595,7 +588,7 @@ def scons_subst_list(strSubst, env, mode=SUBST_RAW, target=None, source=None, gv
 #        Subst_List_Strings[strSubst] = 1
 #    import SCons.Debug
 #    SCons.Debug.caller_trace(1)
-    class ListSubber(UserList.UserList):
+    class ListSubber(collections.UserList):
         """A class to construct the results of a scons_subst_list() call.
 
         Like StringSubber, this class binds a specific construction
@@ -612,16 +605,16 @@ def scons_subst_list(strSubst, env, mode=SUBST_RAW, target=None, source=None, gv
         internally.
         """
         def __init__(self, env, mode, conv, gvars):
-            UserList.UserList.__init__(self, [])
+            collections.UserList.__init__(self, [])
             self.env = env
             self.mode = mode
             self.conv = conv
             self.gvars = gvars
 
             if self.mode == SUBST_RAW:
-                self.add_strip = lambda x, s=self: s.append(x)
+                self.add_strip = lambda x: self.append(x)
             else:
-                self.add_strip = lambda x, s=self: None
+                self.add_strip = lambda x: None
             self.in_strip = None
             self.next_line()
 
@@ -653,7 +646,7 @@ def scons_subst_list(strSubst, env, mode=SUBST_RAW, target=None, source=None, gv
                     self.close_strip('$)')
                 else:
                     key = s[1:]
-                    if key[0] == '{' or string.find(key, '.') >= 0:
+                    if key[0] == '{' or key.find('.') >= 0:
                         if key[0] == '{':
                             key = key[1:-1]
                         try:
@@ -665,9 +658,9 @@ def scons_subst_list(strSubst, env, mode=SUBST_RAW, target=None, source=None, gv
                                 return
                             raise_exception(e, lvars['TARGETS'], s)
                     else:
-                        if lvars.has_key(key):
+                        if key in lvars:
                             s = lvars[key]
-                        elif self.gvars.has_key(key):
+                        elif key in self.gvars:
                             s = self.gvars[key]
                         elif not NameError in AllowableExceptions:
                             raise_exception(NameError(), lvars['TARGETS'], s)
@@ -680,7 +673,7 @@ def scons_subst_list(strSubst, env, mode=SUBST_RAW, target=None, source=None, gv
                     # string for the value of the variable name
                     # we just expanded.
                     lv = lvars.copy()
-                    var = string.split(key, '.')[0]
+                    var = key.split('.')[0]
                     lv[var] = ''
                     self.substitute(s, lv, 0)
                     self.this_word()
@@ -735,7 +728,7 @@ def scons_subst_list(strSubst, env, mode=SUBST_RAW, target=None, source=None, gv
             """Arrange for the next word to start a new line.  This
             is like starting a new word, except that we have to append
             another line to the result."""
-            UserList.UserList.append(self, [])
+            collections.UserList.append(self, [])
             self.next_word()
 
         def this_word(self):
@@ -834,7 +827,7 @@ def scons_subst_list(strSubst, env, mode=SUBST_RAW, target=None, source=None, gv
     # If we dropped that behavior (or found another way to cover it),
     # we could get rid of this call completely and just rely on the
     # Executor setting the variables.
-    if not lvars.has_key('TARGET'):
+    if 'TARGET' not in lvars:
         d = subst_dict(target, source)
         if d:
             lvars = lvars.copy()
@@ -870,7 +863,7 @@ def scons_subst_once(strSubst, env, key):
 
     We do this with some straightforward, brute-force code here...
     """
-    if type(strSubst) == types.StringType and string.find(strSubst, '$') < 0:
+    if isinstance(strSubst, str) and strSubst.find('$') < 0:
         return strSubst
 
     matchlist = ['$' + key, '${' + key + '}']
@@ -880,7 +873,7 @@ def scons_subst_once(strSubst, env, key):
         if a in matchlist:
             a = val
         if is_Sequence(a):
-            return string.join(map(str, a))
+            return ' '.join(map(str, a))
         else:
             return str(a)
 
diff --git a/engine/SCons/Taskmaster.py b/engine/SCons/Taskmaster.py
index ec81af2..68ac1f5 100644
--- a/engine/SCons/Taskmaster.py
+++ b/engine/SCons/Taskmaster.py
@@ -19,7 +19,6 @@
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
 __doc__ = """
 Generic Taskmaster module for the SCons build engine.
@@ -48,11 +47,10 @@ interface and the SCons build engine.  There are two key classes here:
         target(s) that it decides need to be evaluated and/or built.
 """
 
-__revision__ = "src/engine/SCons/Taskmaster.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Taskmaster.py 5023 2010/06/14 22:05:46 scons"
 
 from itertools import chain
 import operator
-import string
 import sys
 import traceback
 
@@ -75,7 +73,7 @@ NODE_FAILED = SCons.Node.failed
 
 CollectStats = None
 
-class Stats:
+class Stats(object):
     """
     A simple class for holding statistics about the disposition of a
     Node by the Taskmaster.  If we're collecting statistics, each Node
@@ -107,13 +105,12 @@ fmt = "%(considered)3d "\
       "%(build)3d "
 
 def dump_stats():
-    StatsNodes.sort(lambda a, b: cmp(str(a), str(b)))
-    for n in StatsNodes:
+    for n in sorted(StatsNodes, key=lambda a: str(a)):
         print (fmt % n.stats.__dict__) + str(n)
 
 
 
-class Task:
+class Task(object):
     """
     Default SCons build engine task.
 
@@ -165,7 +162,7 @@ class Task:
         the Action is actually called to build the targets.
         """
         T = self.tm.trace
-        if T: T.write(self.trace_message('Task.prepare()', self.node))
+        if T: T.write(self.trace_message(u'Task.prepare()', self.node))
 
         # Now that it's the appropriate time, give the TaskMaster a
         # chance to raise any exceptions it encountered while preparing
@@ -204,8 +201,9 @@ class Task:
         # Deprecation Cycle) so the desired behavior is explicitly
         # determined by which concrete subclass is used.
         #raise NotImplementedError
-        msg = ('Direct use of the Taskmaster.Task class will be deprecated\n'
-               + '\tin a future release.')
+        msg = ('Taskmaster.Task is an abstract base class; instead of\n'
+              '\tusing it directly, '
+              'derive from it and override the abstract methods.')
         SCons.Warnings.warn(SCons.Warnings.TaskmasterNeedsExecuteWarning, msg)
         return True
 
@@ -218,7 +216,7 @@ class Task:
         prepare(), executed() or failed().
         """
         T = self.tm.trace
-        if T: T.write(self.trace_message('Task.execute()', self.node))
+        if T: T.write(self.trace_message(u'Task.execute()', self.node))
 
         try:
             everything_was_cached = 1
@@ -370,7 +368,7 @@ class Task:
         This is the default behavior for building only what's necessary.
         """
         T = self.tm.trace
-        if T: T.write(self.trace_message('Task.make_ready_current()',
+        if T: T.write(self.trace_message(u'Task.make_ready_current()',
                                          self.node))
 
         self.out_of_date = []
@@ -415,7 +413,7 @@ class Task:
         that can be put back on the candidates list.
         """
         T = self.tm.trace
-        if T: T.write(self.trace_message('Task.postprocess()', self.node))
+        if T: T.write(self.trace_message(u'Task.postprocess()', self.node))
 
         # We may have built multiple targets, some of which may have
         # common parents waiting for this build.  Count up how many
@@ -432,7 +430,7 @@ class Task:
             # A node can only be in the pending_children set if it has
             # some waiting_parents.
             if t.waiting_parents:
-                if T: T.write(self.trace_message('Task.postprocess()',
+                if T: T.write(self.trace_message(u'Task.postprocess()',
                                                  t,
                                                  'removing'))
                 pending_children.discard(t)
@@ -451,7 +449,7 @@ class Task:
 
         for p, subtract in parents.items():
             p.ref_count = p.ref_count - subtract
-            if T: T.write(self.trace_message('Task.postprocess()',
+            if T: T.write(self.trace_message(u'Task.postprocess()',
                                              p,
                                              'adjusted parent ref count'))
             if p.ref_count == 0:
@@ -552,7 +550,7 @@ def find_cycle(stack, visited):
     return None
 
 
-class Taskmaster:
+class Taskmaster(object):
     """
     The Taskmaster for walking the dependency DAG.
     """
@@ -735,12 +733,12 @@ class Taskmaster:
         self.ready_exc = None
 
         T = self.trace
-        if T: T.write('\n' + self.trace_message('Looking for a node to evaluate'))
+        if T: T.write(u'\n' + self.trace_message('Looking for a node to evaluate'))
 
-        while 1:
+        while True:
             node = self.next_candidate()
             if node is None:
-                if T: T.write(self.trace_message('No candidate anymore.') + '\n')
+                if T: T.write(self.trace_message('No candidate anymore.') + u'\n')
                 return None
 
             node = node.disambiguate()
@@ -763,7 +761,7 @@ class Taskmaster:
             else:
                 S = None
 
-            if T: T.write(self.trace_message('    Considering node %s and its children:' % self.trace_node(node)))
+            if T: T.write(self.trace_message(u'    Considering node %s and its children:' % self.trace_node(node)))
 
             if state == NODE_NO_STATE:
                 # Mark this node as being on the execution stack:
@@ -771,7 +769,7 @@ class Taskmaster:
             elif state > NODE_PENDING:
                 # Skip this node if it has already been evaluated:
                 if S: S.already_handled = S.already_handled + 1
-                if T: T.write(self.trace_message('       already handled (executed)'))
+                if T: T.write(self.trace_message(u'       already handled (executed)'))
                 continue
 
             executor = node.get_executor()
@@ -802,7 +800,7 @@ class Taskmaster:
             for child in chain(executor.get_all_prerequisites(), children):
                 childstate = child.get_state()
 
-                if T: T.write(self.trace_message('       ' + self.trace_node(child)))
+                if T: T.write(self.trace_message(u'       ' + self.trace_node(child)))
 
                 if childstate == NODE_NO_STATE:
                     children_not_visited.append(child)
@@ -861,7 +859,7 @@ class Taskmaster:
                     # count so we can be put back on the list for
                     # re-evaluation when they've all finished.
                     node.ref_count =  node.ref_count + child.add_to_waiting_parents(node)
-                    if T: T.write(self.trace_message('     adjusted ref count: %s, child %s' %
+                    if T: T.write(self.trace_message(u'     adjusted ref count: %s, child %s' %
                                   (self.trace_node(node), repr(str(child)))))
 
                 if T:
@@ -887,7 +885,7 @@ class Taskmaster:
             # The default when we've gotten through all of the checks above:
             # this node is ready to be built.
             if S: S.build = S.build + 1
-            if T: T.write(self.trace_message('Evaluating %s\n' %
+            if T: T.write(self.trace_message(u'Evaluating %s\n' %
                                              self.trace_node(node)))
 
             # For debugging only:
@@ -952,17 +950,8 @@ class Taskmaster:
                 T.write(self.trace_message('       removing node %s from the pending children set\n' %
                         self.trace_node(n)))
         try:
-            while 1:
-                try:
-                    node = to_visit.pop()
-                except AttributeError:
-                    # Python 1.5.2
-                    if len(to_visit):
-                        node = to_visit[0]
-                        to_visit.remove(node)
-                    else:
-                        break
-
+            while len(to_visit):
+                node = to_visit.pop()
                 node_func(node)
 
                 # Prune recursion by flushing the waiting children
@@ -982,7 +971,7 @@ class Taskmaster:
             pass
 
         # We have the stick back the pending_children list into the
-        # task master because the python 1.5.2 compatibility does not
+        # taskmaster because the python 1.5.2 compatibility does not
         # allow us to use in-place updates
         self.pending_children = pending_children
 
@@ -999,16 +988,12 @@ class Taskmaster:
         if not self.pending_children:
             return
 
-        # TODO(1.5)
-        #nclist = [ (n, find_cycle([n], set())) for n in self.pending_children ]
-        nclist = map(lambda n: (n, find_cycle([n], set())), self.pending_children)
+        nclist = [(n, find_cycle([n], set())) for n in self.pending_children]
 
-        # TODO(1.5)
-        #genuine_cycles = [
-        #    node for node, cycle in nclist
-        #             if cycle or node.get_state() != NODE_EXECUTED
-        #]
-        genuine_cycles = filter(lambda t: t[1] or t[0].get_state() != NODE_EXECUTED, nclist)
+        genuine_cycles = [
+            node for node,cycle in nclist
+                     if cycle or node.get_state() != NODE_EXECUTED
+        ]
         if not genuine_cycles:
             # All of the "cycles" found were single nodes in EXECUTED state,
             # which is to say, they really weren't cycles.  Just return.
@@ -1017,13 +1002,13 @@ class Taskmaster:
         desc = 'Found dependency cycle(s):\n'
         for node, cycle in nclist:
             if cycle:
-                desc = desc + "  " + string.join(map(str, cycle), " -> ") + "\n"
+                desc = desc + "  " + " -> ".join(map(str, cycle)) + "\n"
             else:
                 desc = desc + \
                     "  Internal Error: no cycle found for node %s (%s) in state %s\n" %  \
                     (node, repr(node), StateString[node.get_state()])
 
-        raise SCons.Errors.UserError, desc
+        raise SCons.Errors.UserError(desc)
 
 # Local Variables:
 # tab-width:4
diff --git a/engine/SCons/Tool/386asm.py b/engine/SCons/Tool/386asm.py
index 0891e96..5b8c8cb 100644
--- a/engine/SCons/Tool/386asm.py
+++ b/engine/SCons/Tool/386asm.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/386asm.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/386asm.py 5023 2010/06/14 22:05:46 scons"
 
 from SCons.Tool.PharLapCommon import addPharLapPaths
 import SCons.Util
diff --git a/engine/SCons/Tool/BitKeeper.py b/engine/SCons/Tool/BitKeeper.py
index 121f579..a155a42 100644
--- a/engine/SCons/Tool/BitKeeper.py
+++ b/engine/SCons/Tool/BitKeeper.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/BitKeeper.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/BitKeeper.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Action
 import SCons.Builder
@@ -44,6 +44,8 @@ def generate(env):
 
     def BitKeeperFactory(env=env):
         """ """
+        import SCons.Warnings as W
+        W.warn(W.DeprecatedSourceCodeWarning, """The BitKeeper() factory is deprecated and there is no replacement.""")
         act = SCons.Action.Action("$BITKEEPERCOM", "$BITKEEPERCOMSTR")
         return SCons.Builder.Builder(action = act, env = env)
 
diff --git a/engine/SCons/Tool/CVS.py b/engine/SCons/Tool/CVS.py
index b30c319..bb9f956 100644
--- a/engine/SCons/Tool/CVS.py
+++ b/engine/SCons/Tool/CVS.py
@@ -8,7 +8,6 @@ selection method.
 
 """
 
-#
 # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 The SCons Foundation
 #
 # Permission is hereby granted, free of charge, to any person obtaining
@@ -29,9 +28,8 @@ selection method.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Tool/CVS.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/CVS.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Action
 import SCons.Builder
@@ -43,6 +41,8 @@ def generate(env):
 
     def CVSFactory(repos, module='', env=env):
         """ """
+        import SCons.Warnings as W
+        W.warn(W.DeprecatedSourceCodeWarning, """The CVS() factory is deprecated and there is no replacement.""")
         # fail if repos is not an absolute path name?
         if module != '':
            # Don't use os.path.join() because the name we fetch might
diff --git a/engine/SCons/Tool/FortranCommon.py b/engine/SCons/Tool/FortranCommon.py
index 53c48e4..db89f96 100644
--- a/engine/SCons/Tool/FortranCommon.py
+++ b/engine/SCons/Tool/FortranCommon.py
@@ -27,10 +27,9 @@ Stuff for processing Fortran, common to all fortran dialects.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/FortranCommon.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/FortranCommon.py 5023 2010/06/14 22:05:46 scons"
 
 import re
-import string
 import os.path
 
 import SCons.Action
@@ -73,7 +72,7 @@ def _fortranEmitter(target, source, env):
     # Convert module name to a .mod filename
     suffix = env.subst('$FORTRANMODSUFFIX', target=target, source=source)
     moddir = env.subst('$FORTRANMODDIR', target=target, source=source)
-    modules = map(lambda x, s=suffix: string.lower(x) + s, modules)
+    modules = [x.lower() + suffix for x in modules]
     for m in modules:
        target.append(env.fs.File(m, moddir))
     return (target, source)
@@ -91,8 +90,8 @@ def ComputeFortranSuffixes(suffixes, ppsuffixes):
     pre-processed. Both should be sequences, not strings."""
     assert len(suffixes) > 0
     s = suffixes[0]
-    sup = string.upper(s)
-    upper_suffixes = map(string.upper, suffixes)
+    sup = s.upper()
+    upper_suffixes = [_.upper() for _ in suffixes]
     if SCons.Util.case_sensitive_suffixes(s, sup):
         ppsuffixes.extend(upper_suffixes)
     else:
@@ -135,17 +134,17 @@ def DialectAddToEnv(env, dialect, suffixes, ppsuffixes, support_module = 0):
         static_obj.add_emitter(suffix, FortranEmitter)
         shared_obj.add_emitter(suffix, ShFortranEmitter)
 
-    if not env.has_key('%sFLAGS' % dialect):
+    if '%sFLAGS' % dialect not in env:
         env['%sFLAGS' % dialect] = SCons.Util.CLVar('')
 
-    if not env.has_key('SH%sFLAGS' % dialect):
+    if 'SH%sFLAGS' % dialect not in env:
         env['SH%sFLAGS' % dialect] = SCons.Util.CLVar('$%sFLAGS' % dialect)
 
     # If a tool does not define fortran prefix/suffix for include path, use C ones
-    if not env.has_key('INC%sPREFIX' % dialect):
+    if 'INC%sPREFIX' % dialect not in env:
         env['INC%sPREFIX' % dialect] = '$INCPREFIX'
 
-    if not env.has_key('INC%sSUFFIX' % dialect):
+    if 'INC%sSUFFIX' % dialect not in env:
         env['INC%sSUFFIX' % dialect] = '$INCSUFFIX'
 
     env['_%sINCFLAGS' % dialect] = '$( ${_concat(INC%sPREFIX, %sPATH, INC%sSUFFIX, __env__, RDirs, TARGET, SOURCE)} $)' % (dialect, dialect, dialect)
diff --git a/engine/SCons/Tool/JavaCommon.py b/engine/SCons/Tool/JavaCommon.py
index 635659a..bd6a30b 100644
--- a/engine/SCons/Tool/JavaCommon.py
+++ b/engine/SCons/Tool/JavaCommon.py
@@ -27,12 +27,11 @@ Stuff for processing Java.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/JavaCommon.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/JavaCommon.py 5023 2010/06/14 22:05:46 scons"
 
 import os
 import os.path
 import re
-import string
 
 java_parsing = 1
 
@@ -60,7 +59,7 @@ if java_parsing:
                           r'\d*\.\d*|[A-Za-z_][\w\$\.]*|<[A-Za-z_]\w+>|' +
                           r'/\*|\*/|\[\])')
 
-    class OuterState:
+    class OuterState(object):
         """The initial state for parsing a Java file for classes,
         interfaces, and anonymous inner classes."""
         def __init__(self, version=default_java_version):
@@ -68,7 +67,7 @@ if java_parsing:
             if not version in ('1.1', '1.2', '1.3','1.4', '1.5', '1.6',
                                '5', '6'):
                 msg = "Java version %s not supported" % version
-                raise NotImplementedError, msg
+                raise NotImplementedError(msg)
 
             self.version = version
             self.listClasses = []
@@ -127,7 +126,7 @@ if java_parsing:
             self.brackets = self.brackets - 1
             if len(self.stackBrackets) and \
                self.brackets == self.stackBrackets[-1]:
-                self.listOutputs.append(string.join(self.listClasses, '$'))
+                self.listOutputs.append('$'.join(self.listClasses))
                 self.localClasses.pop()
                 self.listClasses.pop()
                 self.anonStacksStack.pop()
@@ -179,7 +178,7 @@ if java_parsing:
                 self.__getAnonStack()[-1] = self.__getAnonStack()[-1] + 1
                 for anon in self.__getAnonStack():
                     className.append(str(anon))
-                self.listOutputs.append(string.join(className, '$'))
+                self.listOutputs.append('$'.join(className))
 
             self.nextAnon = self.nextAnon + 1
             self.__getAnonStack().append(0)
@@ -187,7 +186,7 @@ if java_parsing:
         def setPackage(self, package):
             self.package = package
 
-    class AnonClassState:
+    class AnonClassState(object):
         """A state that looks for anonymous inner classes."""
         def __init__(self, old_state):
             # outer_state is always an instance of OuterState
@@ -222,7 +221,7 @@ if java_parsing:
                 self.outer_state.addAnonClass()
             return self.old_state.parseToken(token)
 
-    class SkipState:
+    class SkipState(object):
         """A state that will skip a specified number of tokens before
         reverting to the previous state."""
         def __init__(self, tokens_to_skip, old_state):
@@ -234,7 +233,7 @@ if java_parsing:
                 return self.old_state
             return self
 
-    class ClassState:
+    class ClassState(object):
         """A state we go into when we hit a class or interface keyword."""
         def __init__(self, outer_state):
             # outer_state is always an instance of OuterState
@@ -261,7 +260,7 @@ if java_parsing:
             self.outer_state.anonStacksStack.append([0])
             return self.outer_state
 
-    class IgnoreState:
+    class IgnoreState(object):
         """A state that will ignore all tokens until it gets to a
         specified token."""
         def __init__(self, ignore_until, old_state):
@@ -272,7 +271,7 @@ if java_parsing:
                 return self.old_state
             return self
 
-    class PackageState:
+    class PackageState(object):
         """The state we enter when we encounter the package keyword.
         We assume the next token will be the package name."""
         def __init__(self, outer_state):
@@ -298,7 +297,7 @@ if java_parsing:
             currstate = currstate.parseToken(token)
             if trace: trace(token, currstate)
         if initial.package:
-            package = string.replace(initial.package, '.', os.sep)
+            package = initial.package.replace('.', os.sep)
         return (package, initial.listOutputs)
 
 else:
diff --git a/engine/SCons/Tool/MSCommon/__init__.py b/engine/SCons/Tool/MSCommon/__init__.py
index a612d9b..6389078 100644
--- a/engine/SCons/Tool/MSCommon/__init__.py
+++ b/engine/SCons/Tool/MSCommon/__init__.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/MSCommon/__init__.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/MSCommon/__init__.py 5023 2010/06/14 22:05:46 scons"
 
 __doc__ = """
 Common functions for Microsoft Visual Studio and Visual C/C++.
diff --git a/engine/SCons/Tool/MSCommon/arch.py b/engine/SCons/Tool/MSCommon/arch.py
index 34de46c..ba6d2d6 100644
--- a/engine/SCons/Tool/MSCommon/arch.py
+++ b/engine/SCons/Tool/MSCommon/arch.py
@@ -21,14 +21,14 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/MSCommon/arch.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/MSCommon/arch.py 5023 2010/06/14 22:05:46 scons"
 
 __doc__ = """Module to define supported Windows chip architectures.
 """
 
 import os
 
-class ArchDefinition:
+class ArchDefinition(object):
     """
     A class for defining architecture-specific settings and logic.
     """
diff --git a/engine/SCons/Tool/MSCommon/common.py b/engine/SCons/Tool/MSCommon/common.py
index 2303d2b..ef1aae9 100644
--- a/engine/SCons/Tool/MSCommon/common.py
+++ b/engine/SCons/Tool/MSCommon/common.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/MSCommon/common.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/MSCommon/common.py 5023 2010/06/14 22:05:46 scons"
 
 __doc__ = """
 Common helper functions for working with the Microsoft tool chain.
@@ -99,46 +99,78 @@ def has_reg(value):
 
 # Functions for fetching environment variable settings from batch files.
 
-def normalize_env(env, keys):
+def normalize_env(env, keys, force=False):
     """Given a dictionary representing a shell environment, add the variables
     from os.environ needed for the processing of .bat files; the keys are
     controlled by the keys argument.
 
     It also makes sure the environment values are correctly encoded.
 
-    Note: the environment is copied"""
+    If force=True, then all of the key values that exist are copied
+    into the returned dictionary.  If force=false, values are only
+    copied if the key does not already exist in the copied dictionary.
+
+    Note: the environment is copied."""
     normenv = {}
     if env:
         for k in env.keys():
             normenv[k] = copy.deepcopy(env[k]).encode('mbcs')
 
         for k in keys:
-            if os.environ.has_key(k):
+            if k in os.environ and (force or not k in normenv):
                 normenv[k] = os.environ[k].encode('mbcs')
 
     return normenv
 
 def get_output(vcbat, args = None, env = None):
     """Parse the output of given bat file, with given args."""
+    
+    if env is None:
+        # Create a blank environment, for use in launching the tools
+        env = SCons.Environment.Environment(tools=[])
+
+    # TODO:  This is a hard-coded list of the variables that (may) need
+    # to be imported from os.environ[] for v[sc]*vars*.bat file
+    # execution to work.  This list should really be either directly
+    # controlled by vc.py, or else derived from the common_tools_var
+    # settings in vs.py.
+    vars = [
+        'COMSPEC',
+        'VS90COMNTOOLS',
+        'VS80COMNTOOLS',
+        'VS71COMNTOOLS',
+        'VS70COMNTOOLS',
+        'VS60COMNTOOLS',
+    ]
+    env['ENV'] = normalize_env(env['ENV'], vars, force=False)
+
     if args:
         debug("Calling '%s %s'" % (vcbat, args))
-        popen = subprocess.Popen('"%s" %s & set' % (vcbat, args),
-                                 stdout=subprocess.PIPE,
-                                 stderr=subprocess.PIPE,
-                                 env=env)
+        popen = SCons.Action._subproc(env,
+                                     '"%s" %s & set' % (vcbat, args),
+                                     stdin = 'devnull',
+                                     stdout=subprocess.PIPE,
+                                     stderr=subprocess.PIPE)
     else:
         debug("Calling '%s'" % vcbat)
-        popen = subprocess.Popen('"%s" & set' % vcbat,
-                                 stdout=subprocess.PIPE,
-                                 stderr=subprocess.PIPE,
-                                 env=env)
+        popen = SCons.Action._subproc(env,
+                                     '"%s" & set' % vcbat,
+                                     stdin = 'devnull',
+                                     stdout=subprocess.PIPE,
+                                     stderr=subprocess.PIPE)
 
     # Use the .stdout and .stderr attributes directly because the
     # .communicate() method uses the threading module on Windows
     # and won't work under Pythons not built with threading.
     stdout = popen.stdout.read()
+    stderr = popen.stderr.read()
+    if stderr:
+        # TODO: find something better to do with stderr;
+        # this at least prevents errors from getting swallowed.
+        import sys
+        sys.stderr.write(stderr)
     if popen.wait() != 0:
-        raise IOError(popen.stderr.read().decode("mbcs"))
+        raise IOError(stderr.decode("mbcs"))
 
     output = stdout.decode("mbcs")
     return output
@@ -147,9 +179,7 @@ def parse_output(output, keep = ("INCLUDE", "LIB", "LIBPATH", "PATH")):
     # dkeep is a dict associating key: path_list, where key is one item from
     # keep, and pat_list the associated list of paths
 
-    # TODO(1.5):  replace with the following list comprehension:
-    #dkeep = dict([(i, []) for i in keep])
-    dkeep = dict(map(lambda i: (i, []), keep))
+    dkeep = dict([(i, []) for i in keep])
 
     # rdk will  keep the regex to match the .bat file output line starts
     rdk = {}
diff --git a/engine/SCons/Tool/MSCommon/netframework.py b/engine/SCons/Tool/MSCommon/netframework.py
index bd123dc..30be811 100644
--- a/engine/SCons/Tool/MSCommon/netframework.py
+++ b/engine/SCons/Tool/MSCommon/netframework.py
@@ -19,16 +19,14 @@
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Tool/MSCommon/netframework.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/MSCommon/netframework.py 5023 2010/06/14 22:05:46 scons"
 
 __doc__ = """
 """
 
 import os
 import re
-import string
 
 from common import read_reg, debug
 
@@ -58,14 +56,14 @@ def query_versions():
         contents = os.listdir(froot)
 
         l = re.compile('v[0-9]+.*')
-        versions = filter(lambda e, l=l: l.match(e), contents)
+        versions = [e for e in contents if l.match(e)]
 
         def versrt(a,b):
             # since version numbers aren't really floats...
             aa = a[1:]
             bb = b[1:]
-            aal = string.split(aa, '.')
-            bbl = string.split(bb, '.')
+            aal = aa.split('.')
+            bbl = bb.split('.')
             # sequence comparison in python is lexicographical
             # which is exactly what we want.
             # Note we sort backwards so the highest version is first.
diff --git a/engine/SCons/Tool/MSCommon/sdk.py b/engine/SCons/Tool/MSCommon/sdk.py
index 54be8ca..6debeb6 100644
--- a/engine/SCons/Tool/MSCommon/sdk.py
+++ b/engine/SCons/Tool/MSCommon/sdk.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/MSCommon/sdk.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/MSCommon/sdk.py 5023 2010/06/14 22:05:46 scons"
 
 __doc__ = """Module to detect the Platform/Windows SDK
 
@@ -58,7 +58,7 @@ _CURINSTALLED_SDK_HKEY_ROOT = \
         r"Software\Microsoft\Microsoft SDKs\Windows\CurrentInstallFolder"
 
 
-class SDKDefinition:
+class SDKDefinition(object):
     """
     An abstract base class for trying to find installed SDK directories.
     """
@@ -131,7 +131,7 @@ class WindowsSDK(SDKDefinition):
     """
     HKEY_FMT = r'Software\Microsoft\Microsoft SDKs\Windows\v%s\InstallationFolder'
     def __init__(self, *args, **kw):
-        apply(SDKDefinition.__init__, (self,)+args, kw)
+        SDKDefinition.__init__(self, *args, **kw)
         self.hkey_data = self.version
 
 class PlatformSDK(SDKDefinition):
@@ -140,7 +140,7 @@ class PlatformSDK(SDKDefinition):
     """
     HKEY_FMT = r'Software\Microsoft\MicrosoftSDK\InstalledSDKS\%s\Install Dir'
     def __init__(self, *args, **kw):
-        apply(SDKDefinition.__init__, (self,)+args, kw)
+        SDKDefinition.__init__(self, *args, **kw)
         self.hkey_data = self.uuid
 
 #
@@ -310,9 +310,9 @@ def get_cur_sdk_dir_from_reg():
     return val
 
 def get_sdk_by_version(mssdk):
-    if not SupportedSDKMap.has_key(mssdk):
+    if mssdk not in SupportedSDKMap:
         msg = "SDK version %s is not supported" % repr(mssdk)
-        raise SCons.Errors.UserError, msg
+        raise SCons.Errors.UserError(msg)
     get_installed_sdks()
     return InstalledSDKMap.get(mssdk)
 
@@ -328,22 +328,22 @@ def get_default_sdk():
 
 def mssdk_setup_env(env):
     debug('sdk.py:mssdk_setup_env()')
-    if env.has_key('MSSDK_DIR'):
+    if 'MSSDK_DIR' in env:
         sdk_dir = env['MSSDK_DIR']
         if sdk_dir is None:
             return
         sdk_dir = env.subst(sdk_dir)
         debug('sdk.py:mssdk_setup_env: Using MSSDK_DIR:%s'%sdk_dir)
-    elif env.has_key('MSSDK_VERSION'):
+    elif 'MSSDK_VERSION' in env:
         sdk_version = env['MSSDK_VERSION']
         if sdk_version is None:
             msg = "SDK version %s is not installed" % repr(mssdk)
-            raise SCons.Errors.UserError, msg
+            raise SCons.Errors.UserError(msg)
         sdk_version = env.subst(sdk_version)
         mssdk = get_sdk_by_version(sdk_version)
         sdk_dir = mssdk.get_sdk_dir()
         debug('sdk.py:mssdk_setup_env: Using MSSDK_VERSION:%s'%sdk_dir)
-    elif env.has_key('MSVS_VERSION'):
+    elif 'MSVS_VERSION' in env:
         msvs_version = env['MSVS_VERSION']
         debug('sdk.py:mssdk_setup_env:Getting MSVS_VERSION from env:%s'%msvs_version)
         if msvs_version is None:
@@ -382,7 +382,7 @@ def mssdk_exists(version=None):
     sdks = get_installed_sdks()
     if version is None:
         return len(sdks) > 0
-    return sdks.has_key(version)
+    return version in sdks
 
 # Local Variables:
 # tab-width:4
diff --git a/engine/SCons/Tool/MSCommon/vc.py b/engine/SCons/Tool/MSCommon/vc.py
index 5ea5a53..f07f34c 100644
--- a/engine/SCons/Tool/MSCommon/vc.py
+++ b/engine/SCons/Tool/MSCommon/vc.py
@@ -30,15 +30,15 @@
 #   * test on 64 bits XP +  VS 2005 (and VS 6 if possible)
 #   * SDK
 #   * Assembly
-__revision__ = "src/engine/SCons/Tool/MSCommon/vc.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/MSCommon/vc.py 5023 2010/06/14 22:05:46 scons"
 
 __doc__ = """Module for Visual C/C++ detection and configuration.
 """
 import SCons.compat
 
-import string
 import os
 import platform
+from string import digits as string_digits
 
 import SCons.Warnings
 
@@ -71,13 +71,16 @@ class BatchFileExecutionError(VisualCException):
 
 # Dict to 'canonalize' the arch
 _ARCH_TO_CANONICAL = {
-    "x86": "x86",
-    "amd64": "amd64",
-    "i386": "x86",
-    "emt64": "amd64",
-    "x86_64": "amd64",
-    "itanium": "ia64",
-    "ia64": "ia64",
+    "amd64"     : "amd64",
+    "emt64"     : "amd64",
+    "i386"      : "x86",
+    "i486"      : "x86",
+    "i586"      : "x86",
+    "i686"      : "x86",
+    "ia64"      : "ia64",
+    "itanium"   : "ia64",
+    "x86"       : "x86",
+    "x86_64"    : "amd64",
 }
 
 # Given a (host, target) tuple, return the argument for the bat file. Both host
@@ -91,6 +94,8 @@ _HOST_TARGET_ARCH_TO_BAT_ARCH = {
 }
 
 def get_host_target(env):
+    debug('vc.py:get_host_target()')
+
     host_platform = env.get('HOST_ARCH')
     if not host_platform:
         host_platform = platform.machine()
@@ -99,22 +104,29 @@ def get_host_target(env):
         # PROCESSOR_ARCHITECTURE.
         if not host_platform:
             host_platform = os.environ.get('PROCESSOR_ARCHITECTURE', '')
-    target_platform = env.get('TARGET_ARCH')
-    if not target_platform:
+            
+    # Retain user requested TARGET_ARCH
+    req_target_platform = env.get('TARGET_ARCH')
+    debug('vc.py:get_host_target() req_target_platform:%s'%req_target_platform)
+
+    if  req_target_platform:
+        # If user requested a specific platform then only try that one.
+        target_platform = req_target_platform
+    else:
         target_platform = host_platform
-
+        
     try:
-        host = _ARCH_TO_CANONICAL[host_platform]
+        host = _ARCH_TO_CANONICAL[host_platform.lower()]
     except KeyError, e:
         msg = "Unrecognized host architecture %s"
         raise ValueError(msg % repr(host_platform))
 
     try:
-        target = _ARCH_TO_CANONICAL[target_platform]
+        target = _ARCH_TO_CANONICAL[target_platform.lower()]
     except KeyError, e:
         raise ValueError("Unrecognized target architecture %s" % target_platform)
 
-    return (host, target)
+    return (host, target,req_target_platform)
 
 _VCVER = ["10.0", "9.0", "9.0Exp","8.0", "8.0Exp","7.1", "7.0", "6.0"]
 
@@ -136,17 +148,19 @@ _VCVER_TO_PRODUCT_DIR = {
         '6.0': [
             r'Microsoft\VisualStudio\6.0\Setup\Microsoft Visual C++\ProductDir']
 }
-
+        
 def msvc_version_to_maj_min(msvc_version):
-    t = msvc_version.split(".")
-    if not len(t) == 2:
-        raise ValueError("Unrecognized version %s" % msvc_version)
-    try:
-        maj = int(t[0])
-        min = int(t[1])
-        return maj, min
-    except ValueError, e:
-        raise ValueError("Unrecognized version %s" % msvc_version)
+   msvc_version_numeric = ''.join([x for  x in msvc_version if x in string_digits + '.'])
+
+   t = msvc_version_numeric.split(".")
+   if not len(t) == 2:
+       raise ValueError("Unrecognized version %s (%s)" % (msvc_version,msvc_version_numeric))
+   try:
+       maj = int(t[0])
+       min = int(t[1])
+       return maj, min
+   except ValueError, e:
+       raise ValueError("Unrecognized version %s (%s)" % (msvc_version,msvc_version_numeric))
 
 def is_host_target_supported(host_target, msvc_version):
     """Return True if the given (host, target) tuple is supported given the
@@ -206,7 +220,7 @@ def find_vc_pdir(msvc_version):
                 raise MissingConfiguration("registry dir %s not found on the filesystem" % comps)
     return None
 
-def find_batch_file(env,msvc_version):
+def find_batch_file(env,msvc_version,host_arch,target_arch):
     """
     Find the location of the batch script which should set up the compiler
     for any TARGET_ARCH whose compilers were installed by Visual Studio/VCExpress
@@ -218,7 +232,7 @@ def find_batch_file(env,msvc_version):
     debug('vc.py: find_batch_file() pdir:%s'%pdir)
 
     # filter out e.g. "Exp" from the version name
-    msvc_ver_numeric = string.join(filter(lambda x: x in string.digits + ".", msvc_version), '')
+    msvc_ver_numeric = ''.join([x for x in msvc_version if x in string_digits + "."])
     vernum = float(msvc_ver_numeric)
     if 7 <= vernum < 8:
         pdir = os.path.join(pdir, os.pardir, "Common7", "Tools")
@@ -234,7 +248,6 @@ def find_batch_file(env,msvc_version):
         batfilename = None
     
     installed_sdks=get_installed_sdks()
-    (host_arch,target_arch)=get_host_target(env)
     for _sdk in installed_sdks:
         sdk_bat_file=_sdk.get_sdk_vc_script(host_arch,target_arch)
         sdk_bat_file_path=os.path.join(pdir,sdk_bat_file)
@@ -330,6 +343,73 @@ def msvc_setup_env_once(env):
         msvc_setup_env(env)
         env["MSVC_SETUP_RUN"] = True
 
+def msvc_find_valid_batch_script(env,version):
+    debug('vc.py:msvc_find_valid_batch_script()')
+    # Find the host platform, target platform, and if present the requested
+    # target platform
+    (host_platform, target_platform,req_target_platform) = get_host_target(env)
+
+    # If the user hasn't specifically requested a TARGET_ARCH, and
+    # The TARGET_ARCH is amd64 then also try 32 bits if there are no viable
+    # 64 bit tools installed
+    try_target_archs = [target_platform]
+    if not req_target_platform and target_platform=='amd64':
+        try_target_archs.append('x86')
+
+    d = None
+    for tp in try_target_archs:
+        # Set to current arch.
+        env['TARGET_ARCH']=tp
+        
+        debug("vc.py:msvc_find_valid_batch_script() trying target_platform:%s"%tp)
+        host_target = (host_platform, tp)
+        if not is_host_target_supported(host_target, version):
+            warn_msg = "host, target = %s not supported for MSVC version %s" % \
+                (host_target, version)
+            SCons.Warnings.warn(SCons.Warnings.VisualCMissingWarning, warn_msg)
+        arg = _HOST_TARGET_ARCH_TO_BAT_ARCH[host_target]
+        
+        # Try to locate a batch file for this host/target platform combo
+        try:
+            (vc_script,sdk_script) = find_batch_file(env,version,host_platform,tp)
+            debug('vc.py:msvc_find_valid_batch_script() vc_script:%s sdk_script:%s'%(vc_script,sdk_script))
+        except VisualCException, e:
+            msg = str(e)
+            debug('Caught exception while looking for batch file (%s)' % msg)
+            warn_msg = "VC version %s not installed.  " + \
+                       "C/C++ compilers are most likely not set correctly.\n" + \
+                       " Installed versions are: %s"
+            warn_msg = warn_msg % (version, cached_get_installed_vcs())
+            SCons.Warnings.warn(SCons.Warnings.VisualCMissingWarning, warn_msg)
+            continue
+        
+        # Try to use the located batch file for this host/target platform combo
+        debug('vc.py:msvc_find_valid_batch_script() use_script 2 %s, args:%s\n' % (repr(vc_script), arg))
+        if vc_script:
+            try:
+                d = script_env(vc_script, args=arg)
+            except BatchFileExecutionError, e:
+                debug('vc.py:msvc_find_valid_batch_script() use_script 3: failed running VC script %s: %s: Error:%s'%(repr(vc_script),arg,e))
+                vc_script=None
+        if not vc_script and sdk_script:
+            debug('vc.py:msvc_find_valid_batch_script() use_script 4: trying sdk script: %s'%(sdk_script))
+            try:
+                d = script_env(sdk_script,args=[])
+            except BatchFileExecutionError,e:
+                debug('vc.py:msvc_find_valid_batch_script() use_script 5: failed running SDK script %s: Error:%s'%(repr(sdk_script),e))
+                continue
+        elif not vc_script and not sdk_script:
+            debug('vc.py:msvc_find_valid_batch_script() use_script 6: Neither VC script nor SDK script found')
+            continue
+    
+    # If we cannot find a viable installed compiler, reset the TARGET_ARCH
+    # To it's initial value
+    if not d:
+        env['TARGET_ARCH']=req_target_platform
+    
+    return d
+    
+
 def msvc_setup_env(env):
     debug('msvc_setup_env()')
 
@@ -347,50 +427,16 @@ def msvc_setup_env(env):
     env['MSVS_VERSION'] = version
     env['MSVS'] = {}
 
-    try:
-        (vc_script,sdk_script) = find_batch_file(env,version)
-        debug('vc.py:msvc_setup_env() vc_script:%s sdk_script:%s'%(vc_script,sdk_script))
-    except VisualCException, e:
-        msg = str(e)
-        debug('Caught exception while looking for batch file (%s)' % msg)
-        warn_msg = "VC version %s not installed.  " + \
-                   "C/C++ compilers are most likely not set correctly.\n" + \
-                   " Installed versions are: %s"
-        warn_msg = warn_msg % (version, cached_get_installed_vcs())
-        SCons.Warnings.warn(SCons.Warnings.VisualCMissingWarning, warn_msg)
-        return None
     
-    debug('vc.py:msvc_setup_env() vc_script:%s sdk_script:%s'%(vc_script,sdk_script))
     use_script = env.get('MSVC_USE_SCRIPT', True)
     if SCons.Util.is_String(use_script):
-        debug('use_script 1 %s\n' % repr(use_script))
+        debug('vc.py:msvc_setup_env() use_script 1 %s\n' % repr(use_script))
         d = script_env(use_script)
-    elif use_script:
-        host_platform, target_platform = get_host_target(env)
-        host_target = (host_platform, target_platform)
-        if not is_host_target_supported(host_target, version):
-            warn_msg = "host, target = %s not supported for MSVC version %s" % \
-                (host_target, version)
-            SCons.Warnings.warn(SCons.Warnings.VisualCMissingWarning, warn_msg)
-        arg = _HOST_TARGET_ARCH_TO_BAT_ARCH[host_target]
-        debug('use_script 2 %s, args:%s\n' % (repr(vc_script), arg))
-        if vc_script:
-            try:
-                d = script_env(vc_script, args=arg)
-            except BatchFileExecutionError, e:
-                debug('use_script 3: failed running VC script %s: %s: Error:%s'%(repr(vc_script),arg,e))
-                vc_script=None
-        if not vc_script and sdk_script:
-            debug('use_script 4: trying sdk script: %s'%(sdk_script))
-            try:
-                d = script_env(sdk_script,args=[])
-            except BatchFileExecutionError,e:
-                debug('use_script 5: failed running SDK script %s: Error:%s'%(repr(sdk_script),e))
-                return None
-        elif not vc_script and not sdk_script:
-            debug('use_script 6: Neither VC script nor SDK script found')
-            return None
-
+    elif use_script:      
+        d = msvc_find_valid_batch_script(env,version)
+        debug('vc.py:msvc_setup_env() use_script 2 %s\n' % d)
+        if not d:
+            return d
     else:
         debug('MSVC_USE_SCRIPT set to False')
         warn_msg = "MSVC_USE_SCRIPT set to False, assuming environment " \
diff --git a/engine/SCons/Tool/MSCommon/vs.py b/engine/SCons/Tool/MSCommon/vs.py
index e634a18..06030e2 100644
--- a/engine/SCons/Tool/MSCommon/vs.py
+++ b/engine/SCons/Tool/MSCommon/vs.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/MSCommon/vs.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/MSCommon/vs.py 5023 2010/06/14 22:05:46 scons"
 
 __doc__ = """Module to detect Visual Studio and/or Visual C/C++
 """
@@ -40,7 +40,7 @@ from common import debug, \
 
 import SCons.Tool.MSCommon.vc
 
-class VisualStudio:
+class VisualStudio(object):
     """
     An abstract base class for trying to find installed versions of
     Visual Studio.
@@ -385,9 +385,9 @@ def get_vs_by_version(msvs):
     global SupportedVSMap
 
     debug('vs.py:get_vs_by_version()')
-    if not SupportedVSMap.has_key(msvs):
+    if msvs not in SupportedVSMap:
         msg = "Visual Studio version %s is not supported" % repr(msvs)
-        raise SCons.Errors.UserError, msg
+        raise SCons.Errors.UserError(msg)
     get_installed_visual_studios()
     vs = InstalledVSMap.get(msvs)
     debug('InstalledVSMap:%s'%InstalledVSMap)
@@ -415,15 +415,13 @@ def get_default_version(env):
     version: str
         the default version.
     """
-    if not env.has_key('MSVS') or not SCons.Util.is_Dict(env['MSVS']):
-        # TODO(1.5):
-        #versions = [vs.version for vs in get_installed_visual_studios()]
-        versions = map(lambda vs: vs.version, get_installed_visual_studios())
+    if 'MSVS' not in env or not SCons.Util.is_Dict(env['MSVS']):
+        versions = [vs.version for vs in get_installed_visual_studios()]
         env['MSVS'] = {'VERSIONS' : versions}
     else:
         versions = env['MSVS'].get('VERSIONS', [])
 
-    if not env.has_key('MSVS_VERSION'):
+    if 'MSVS_VERSION' not in env:
         if versions:
             env['MSVS_VERSION'] = versions[0] #use highest version by default
         else:
@@ -451,7 +449,7 @@ def get_default_arch(env):
         arch = 'x86'
     elif not arch in msvs.get_supported_arch():
         fmt = "Visual Studio version %s does not support architecture %s"
-        raise SCons.Errors.UserError, fmt % (env['MSVS_VERSION'], arch)
+        raise SCons.Errors.UserError(fmt % (env['MSVS_VERSION'], arch))
 
     return arch
 
@@ -473,11 +471,15 @@ def msvs_setup_env(env):
         vars = ('LIB', 'LIBPATH', 'PATH', 'INCLUDE')
 
         msvs_list = get_installed_visual_studios()
-        # TODO(1.5):
-        #vscommonvarnames = [ vs.common_tools_var for vs in msvs_list ]
-        vscommonvarnames = map(lambda vs: vs.common_tools_var, msvs_list)
-        nenv = normalize_env(env['ENV'], vscommonvarnames + ['COMSPEC'])
-        output = get_output(batfilename, arch, env=nenv)
+        vscommonvarnames = [vs.common_tools_var for vs in msvs_list]
+        save_ENV = env['ENV']
+        nenv = normalize_env(env['ENV'],
+                             ['COMSPEC'] + vscommonvarnames,
+                             force=True)
+        try:
+            output = get_output(batfilename, arch, env=nenv)
+        finally:
+            env['ENV'] = save_ENV
         vars = parse_output(output, vars)
 
         for k, v in vars.items():
@@ -487,9 +489,7 @@ def query_versions():
     """Query the system to get available versions of VS. A version is
     considered when a batfile is found."""
     msvs_list = get_installed_visual_studios()
-    # TODO(1.5)
-    #versions = [ msvs.version for msvs in msvs_list ]
-    versions = map(lambda msvs:  msvs.version, msvs_list)
+    versions = [msvs.version for msvs in msvs_list]
     return versions
 
 # Local Variables:
diff --git a/engine/SCons/Tool/Perforce.py b/engine/SCons/Tool/Perforce.py
index 08da75b..43d9f6e 100644
--- a/engine/SCons/Tool/Perforce.py
+++ b/engine/SCons/Tool/Perforce.py
@@ -8,7 +8,6 @@ selection method.
 
 """
 
-#
 # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 The SCons Foundation
 #
 # Permission is hereby granted, free of charge, to any person obtaining
@@ -29,9 +28,8 @@ selection method.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Tool/Perforce.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/Perforce.py 5023 2010/06/14 22:05:46 scons"
 
 import os
 
@@ -44,7 +42,6 @@ import SCons.Util
 from SCons.Tool.PharLapCommon import addPathIfNotExists
 
 
-
 # Variables that we want to import from the base OS environment.
 _import_env = [ 'P4PORT', 'P4CLIENT', 'P4USER', 'USER', 'USERNAME', 'P4PASSWD',
                 'P4CHARSET', 'P4LANGUAGE', 'SystemRoot' ]
@@ -57,6 +54,8 @@ def generate(env):
 
     def PerforceFactory(env=env):
         """ """
+        import SCons.Warnings as W
+        W.warn(W.DeprecatedSourceCodeWarning, """The Perforce() factory is deprecated and there is no replacement.""")
         return SCons.Builder.Builder(action = PerforceAction, env = env)
 
     #setattr(env, 'Perforce', PerforceFactory)
diff --git a/engine/SCons/Tool/PharLapCommon.py b/engine/SCons/Tool/PharLapCommon.py
index 2cfb02a..64dd02f 100644
--- a/engine/SCons/Tool/PharLapCommon.py
+++ b/engine/SCons/Tool/PharLapCommon.py
@@ -29,14 +29,13 @@ Phar Lap ETS tool chain.  Right now, this is linkloc and
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/PharLapCommon.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/PharLapCommon.py 5023 2010/06/14 22:05:46 scons"
 
 import os
 import os.path
 import SCons.Errors
 import SCons.Util
 import re
-import string
 
 def getPharLapPath():
     """Reads the registry to find the installed path of the Phar Lap ETS
@@ -46,7 +45,7 @@ def getPharLapPath():
     be found."""
 
     if not SCons.Util.can_read_reg:
-        raise SCons.Errors.InternalError, "No Windows registry module was found"
+        raise SCons.Errors.InternalError("No Windows registry module was found")
     try:
         k=SCons.Util.RegOpenKeyEx(SCons.Util.HKEY_LOCAL_MACHINE,
                                   'SOFTWARE\\Pharlap\\ETS')
@@ -62,7 +61,7 @@ def getPharLapPath():
                     
         return os.path.normpath(val)
     except SCons.Util.RegError:
-        raise SCons.Errors.UserError, "Cannot find Phar Lap ETS path in the registry.  Is it installed properly?"
+        raise SCons.Errors.UserError("Cannot find Phar Lap ETS path in the registry.  Is it installed properly?")
 
 REGEX_ETS_VER = re.compile(r'#define\s+ETS_VER\s+([0-9]+)')
 
@@ -79,7 +78,7 @@ def getPharLapVersion():
 
     include_path = os.path.join(getPharLapPath(), os.path.normpath("include/embkern.h"))
     if not os.path.exists(include_path):
-        raise SCons.Errors.UserError, "Cannot find embkern.h in ETS include directory.\nIs Phar Lap ETS installed properly?"
+        raise SCons.Errors.UserError("Cannot find embkern.h in ETS include directory.\nIs Phar Lap ETS installed properly?")
     mo = REGEX_ETS_VER.search(open(include_path, 'r').read())
     if mo:
         return int(mo.group(1))
@@ -97,14 +96,14 @@ def addPathIfNotExists(env_dict, key, path, sep=os.pathsep):
         is_list = 1
         paths = env_dict[key]
         if not SCons.Util.is_List(env_dict[key]):
-            paths = string.split(paths, sep)
+            paths = paths.split(sep)
             is_list = 0
-        if not os.path.normcase(path) in map(os.path.normcase, paths):
+        if os.path.normcase(path) not in list(map(os.path.normcase, paths)):
             paths = [ path ] + paths
         if is_list:
             env_dict[key] = paths
         else:
-            env_dict[key] = string.join(paths, sep)
+            env_dict[key] = sep.join(paths)
     except KeyError:
         env_dict[key] = path
 
diff --git a/engine/SCons/Tool/RCS.py b/engine/SCons/Tool/RCS.py
index 4d14af7..5c5a6bd 100644
--- a/engine/SCons/Tool/RCS.py
+++ b/engine/SCons/Tool/RCS.py
@@ -8,7 +8,6 @@ selection method.
 
 """
 
-#
 # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 The SCons Foundation
 #
 # Permission is hereby granted, free of charge, to any person obtaining
@@ -29,9 +28,8 @@ selection method.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Tool/RCS.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/RCS.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Action
 import SCons.Builder
@@ -43,6 +41,8 @@ def generate(env):
 
     def RCSFactory(env=env):
         """ """
+        import SCons.Warnings as W
+        W.warn(W.DeprecatedSourceCodeWarning, """The RCS() factory is deprecated and there is no replacement.""")
         act = SCons.Action.Action('$RCS_COCOM', '$RCS_COCOMSTR')
         return SCons.Builder.Builder(action = act, env = env)
 
diff --git a/engine/SCons/Tool/SCCS.py b/engine/SCons/Tool/SCCS.py
index 2893291..2983b83 100644
--- a/engine/SCons/Tool/SCCS.py
+++ b/engine/SCons/Tool/SCCS.py
@@ -8,7 +8,6 @@ selection method.
 
 """
 
-#
 # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 The SCons Foundation
 #
 # Permission is hereby granted, free of charge, to any person obtaining
@@ -29,9 +28,8 @@ selection method.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Tool/SCCS.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/SCCS.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Action
 import SCons.Builder
@@ -43,6 +41,8 @@ def generate(env):
 
     def SCCSFactory(env=env):
         """ """
+        import SCons.Warnings as W
+        W.warn(W.DeprecatedSourceCodeWarning, """The SCCS() factory is deprecated and there is no replacement.""")
         act = SCons.Action.Action('$SCCSCOM', '$SCCSCOMSTR')
         return SCons.Builder.Builder(action = act, env = env)
 
diff --git a/engine/SCons/Tool/Subversion.py b/engine/SCons/Tool/Subversion.py
index 51a670a..26ff700 100644
--- a/engine/SCons/Tool/Subversion.py
+++ b/engine/SCons/Tool/Subversion.py
@@ -8,7 +8,6 @@ selection method.
 
 """
 
-#
 # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 The SCons Foundation
 #
 # Permission is hereby granted, free of charge, to any person obtaining
@@ -29,9 +28,8 @@ selection method.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Tool/Subversion.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/Subversion.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
 
@@ -46,6 +44,8 @@ def generate(env):
     def SubversionFactory(repos, module='', env=env):
         """ """
         # fail if repos is not an absolute path name?
+        import SCons.Warnings as W
+        W.warn(W.DeprecatedSourceCodeWarning, """The Subversion() factory is deprecated and there is no replacement.""")
         if module != '':
             module = os.path.join(module, '')
         act = SCons.Action.Action('$SVNCOM', '$SVNCOMSTR')
diff --git a/engine/SCons/Tool/__init__.py b/engine/SCons/Tool/__init__.py
index 4a41a8c..e38d85f 100644
--- a/engine/SCons/Tool/__init__.py
+++ b/engine/SCons/Tool/__init__.py
@@ -34,9 +34,8 @@ tool definition.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Tool/__init__.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/__init__.py 5023 2010/06/14 22:05:46 scons"
 
 import imp
 import sys
@@ -85,7 +84,7 @@ for suffix in LaTeXSuffixes:
     SourceFileScanner.add_scanner(suffix, LaTeXScanner)
     SourceFileScanner.add_scanner(suffix, PDFLaTeXScanner)
 
-class Tool:
+class Tool(object):
     def __init__(self, name, toolpath=[], **kw):
         self.name = name
         self.toolpath = toolpath + DefaultToolpath
@@ -113,7 +112,7 @@ class Tool:
                         file.close()
             except ImportError, e:
                 if str(e)!="No module named %s"%self.name:
-                    raise SCons.Errors.EnvironmentError, e
+                    raise SCons.Errors.EnvironmentError(e)
                 try:
                     import zipimport
                 except ImportError:
@@ -143,7 +142,7 @@ class Tool:
                     return module
                 except ImportError, e:
                     if str(e)!="No module named %s"%self.name:
-                        raise SCons.Errors.EnvironmentError, e
+                        raise SCons.Errors.EnvironmentError(e)
                     try:
                         import zipimport
                         importer = zipimport.zipimporter( sys.modules['SCons.Tool'].__path__[0] )
@@ -152,10 +151,10 @@ class Tool:
                         return module
                     except ImportError, e:
                         m = "No tool named '%s': %s" % (self.name, e)
-                        raise SCons.Errors.EnvironmentError, m
+                        raise SCons.Errors.EnvironmentError(m)
             except ImportError, e:
                 m = "No tool named '%s': %s" % (self.name, e)
-                raise SCons.Errors.EnvironmentError, m
+                raise SCons.Errors.EnvironmentError(m)
 
     def __call__(self, env, *args, **kw):
         if self.init_kw is not None:
@@ -170,7 +169,7 @@ class Tool:
         env.Append(TOOLS = [ self.name ])
         if hasattr(self, 'options'):
             import SCons.Variables
-            if not env.has_key('options'):
+            if 'options' not in env:
                 from SCons.Script import ARGUMENTS
                 env['options']=SCons.Variables.Variables(args=ARGUMENTS)
             opts=env['options']
@@ -178,7 +177,7 @@ class Tool:
             self.options(opts)
             opts.Update(env)
 
-        apply(self.generate, ( env, ) + args, kw)
+        self.generate(env, *args, **kw)
 
     def __str__(self):
         return self.name
@@ -428,7 +427,7 @@ def CreateJavaFileBuilder(env):
         env['JAVASUFFIX'] = '.java'
     return java_file
 
-class ToolInitializerMethod:
+class ToolInitializerMethod(object):
     """
     This is added to a construction environment in place of a
     method(s) normally called for a Builder (env.Object, env.StaticObject,
@@ -474,9 +473,9 @@ class ToolInitializerMethod:
         builder = self.get_builder(env)
         if builder is None:
             return [], []
-        return apply(builder, args, kw)
+        return builder(*args, **kw)
 
-class ToolInitializer:
+class ToolInitializer(object):
     """
     A class for delayed initialization of Tools modules.
 
@@ -530,9 +529,9 @@ class ToolInitializer:
 def Initializers(env):
     ToolInitializer(env, ['install'], ['_InternalInstall', '_InternalInstallAs'])
     def Install(self, *args, **kw):
-        return apply(self._InternalInstall, args, kw)
+        return self._InternalInstall(*args, **kw)
     def InstallAs(self, *args, **kw):
-        return apply(self._InternalInstallAs, args, kw)
+        return self._InternalInstallAs(*args, **kw)
     env.AddMethod(Install)
     env.AddMethod(InstallAs)
 
@@ -546,7 +545,7 @@ def FindTool(tools, env):
 def FindAllTools(tools, env):
     def ToolExists(tool, env=env):
         return Tool(tool).exists(env)
-    return filter (ToolExists, tools)
+    return list(filter (ToolExists, tools))
 
 def tool_list(platform, env):
 
@@ -646,27 +645,34 @@ def tool_list(platform, env):
         fortran_compiler = FindTool(fortran_compilers, env) or fortran_compilers[0]
         ar = FindTool(ars, env) or ars[0]
 
-    other_tools = FindAllTools(['BitKeeper', 'CVS',
-                                'dmd',
-                                'filesystem',
-                                'dvipdf', 'dvips', 'gs',
-                                'jar', 'javac', 'javah',
-                                'latex', 'lex',
-                                'm4', #'midl', 'msvs',
-                                'pdflatex', 'pdftex', 'Perforce',
-                                'RCS', 'rmic', 'rpcgen',
-                                'SCCS',
-                                # 'Subversion',
-                                'swig',
-                                'tar', 'tex',
-                                'yacc', 'zip', 'rpm', 'wix']+other_plat_tools,
-                               env)
+    other_tools = FindAllTools(other_plat_tools + [
+                               'dmd',
+                               #TODO: merge 'install' into 'filesystem' and
+                               # make 'filesystem' the default
+                               'filesystem',
+                               'm4',
+                               'wix', #'midl', 'msvs',
+                               # Parser generators
+                               'lex', 'yacc',
+                               # Foreign function interface
+                               'rpcgen', 'swig',
+                               # Java
+                               'jar', 'javac', 'javah', 'rmic',
+                               # TeX
+                               'dvipdf', 'dvips', 'gs',
+                               'tex', 'latex', 'pdflatex', 'pdftex',
+                               # Archivers
+                               'tar', 'zip', 'rpm',
+                               # SourceCode factories
+                               'BitKeeper', 'CVS', 'Perforce',
+                               'RCS', 'SCCS', # 'Subversion',
+                               ], env)
 
     tools = ([linker, c_compiler, cxx_compiler,
               fortran_compiler, assembler, ar]
              + other_tools)
 
-    return filter(lambda x: x, tools)
+    return [x for x in tools if x]
 
 # Local Variables:
 # tab-width:4
diff --git a/engine/SCons/Tool/aixc++.py b/engine/SCons/Tool/aixc++.py
index 035ece4..62c5ef7 100644
--- a/engine/SCons/Tool/aixc++.py
+++ b/engine/SCons/Tool/aixc++.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/aixc++.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/aixc++.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
 
diff --git a/engine/SCons/Tool/aixcc.py b/engine/SCons/Tool/aixcc.py
index 1c6ae14..bf1de34 100644
--- a/engine/SCons/Tool/aixcc.py
+++ b/engine/SCons/Tool/aixcc.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/aixcc.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/aixcc.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
 
diff --git a/engine/SCons/Tool/aixf77.py b/engine/SCons/Tool/aixf77.py
index a5a9d8c..f680247 100644
--- a/engine/SCons/Tool/aixf77.py
+++ b/engine/SCons/Tool/aixf77.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/aixf77.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/aixf77.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
 
diff --git a/engine/SCons/Tool/aixlink.py b/engine/SCons/Tool/aixlink.py
index 0e1b974..9531a4b 100644
--- a/engine/SCons/Tool/aixlink.py
+++ b/engine/SCons/Tool/aixlink.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/aixlink.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/aixlink.py 5023 2010/06/14 22:05:46 scons"
 
 import os
 import os.path
diff --git a/engine/SCons/Tool/applelink.py b/engine/SCons/Tool/applelink.py
index a56462d..4b3ae77 100644
--- a/engine/SCons/Tool/applelink.py
+++ b/engine/SCons/Tool/applelink.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/applelink.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/applelink.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Util
 
diff --git a/engine/SCons/Tool/ar.py b/engine/SCons/Tool/ar.py
index b0ae76b..68effb1 100644
--- a/engine/SCons/Tool/ar.py
+++ b/engine/SCons/Tool/ar.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/ar.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/ar.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/engine/SCons/Tool/as.py b/engine/SCons/Tool/as.py
index bdd00db..f18ff57 100644
--- a/engine/SCons/Tool/as.py
+++ b/engine/SCons/Tool/as.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/as.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/as.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/engine/SCons/Tool/bcc32.py b/engine/SCons/Tool/bcc32.py
index 67325d0..b7c7bf2 100644
--- a/engine/SCons/Tool/bcc32.py
+++ b/engine/SCons/Tool/bcc32.py
@@ -27,11 +27,10 @@ XXX
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/bcc32.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/bcc32.py 5023 2010/06/14 22:05:46 scons"
 
 import os
 import os.path
-import string
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/engine/SCons/Tool/c++.py b/engine/SCons/Tool/c++.py
index d74cd96..907324d 100644
--- a/engine/SCons/Tool/c++.py
+++ b/engine/SCons/Tool/c++.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/c++.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/c++.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
 
diff --git a/engine/SCons/Tool/cc.py b/engine/SCons/Tool/cc.py
index c565225..c3a6b92 100644
--- a/engine/SCons/Tool/cc.py
+++ b/engine/SCons/Tool/cc.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/cc.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/cc.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Tool
 import SCons.Defaults
@@ -45,7 +45,7 @@ def add_common_cc_variables(env):
     Add underlying common "C compiler" variables that
     are used by multiple tools (specifically, c++).
     """
-    if not env.has_key('_CCCOMCOM'):
+    if '_CCCOMCOM' not in env:
         env['_CCCOMCOM'] = '$CPPFLAGS $_CPPDEFFLAGS $_CPPINCFLAGS'
         # It's a hack to test for darwin here, but the alternative
         # of creating an applecc.py to contain this seems overkill.
@@ -56,10 +56,10 @@ def add_common_cc_variables(env):
         if env['PLATFORM'] == 'darwin':
             env['_CCCOMCOM'] = env['_CCCOMCOM'] + ' $_FRAMEWORKPATH'
 
-    if not env.has_key('CCFLAGS'):
+    if 'CCFLAGS' not in env:
         env['CCFLAGS']   = SCons.Util.CLVar('')
 
-    if not env.has_key('SHCCFLAGS'):
+    if 'SHCCFLAGS' not in env:
         env['SHCCFLAGS'] = SCons.Util.CLVar('$CCFLAGS')
 
 def generate(env):
@@ -73,18 +73,6 @@ def generate(env):
         shared_obj.add_action(suffix, SCons.Defaults.ShCAction)
         static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
         shared_obj.add_emitter(suffix, SCons.Defaults.SharedObjectEmitter)
-#<<<<<<< .working
-#
-#    env['_CCCOMCOM'] = '$CPPFLAGS $_CPPDEFFLAGS $_CPPINCFLAGS'
-#    # It's a hack to test for darwin here, but the alternative of creating
-#    # an applecc.py to contain this seems overkill.  Maybe someday the Apple
-#    # platform will require more setup and this logic will be moved.
-#    env['FRAMEWORKS'] = SCons.Util.CLVar('')
-#    env['FRAMEWORKPATH'] = SCons.Util.CLVar('')
-#    if env['PLATFORM'] == 'darwin':
-#        env['_CCCOMCOM'] = env['_CCCOMCOM'] + ' $_FRAMEWORKPATH'
-#=======
-#>>>>>>> .merge-right.r1907
 
     add_common_cc_variables(env)
 
diff --git a/engine/SCons/Tool/cvf.py b/engine/SCons/Tool/cvf.py
index 7930a38..4860241 100644
--- a/engine/SCons/Tool/cvf.py
+++ b/engine/SCons/Tool/cvf.py
@@ -27,7 +27,7 @@ Tool-specific initialization for the Compaq Visual Fortran compiler.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/cvf.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/cvf.py 5023 2010/06/14 22:05:46 scons"
 
 import fortran
 
diff --git a/engine/SCons/Tool/default.py b/engine/SCons/Tool/default.py
index b477c7b..a2883d7 100644
--- a/engine/SCons/Tool/default.py
+++ b/engine/SCons/Tool/default.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/default.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/default.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Tool
 
diff --git a/engine/SCons/Tool/dmd.py b/engine/SCons/Tool/dmd.py
index d5dc5c1..a269354 100644
--- a/engine/SCons/Tool/dmd.py
+++ b/engine/SCons/Tool/dmd.py
@@ -54,10 +54,9 @@ Lib tool variables:
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/dmd.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/dmd.py 5023 2010/06/14 22:05:46 scons"
 
 import os
-import string
 
 import SCons.Action
 import SCons.Builder
@@ -112,7 +111,7 @@ def generate(env):
         # This is merely for the convenience of the dependency scanner.
         dmd_path = env.WhereIs(dc)
         if dmd_path:
-            x = string.rindex(dmd_path, dc)
+            x = dmd_path.rindex(dc)
             phobosDir = dmd_path[:x] + '/../src/phobos'
             if os.path.isdir(phobosDir):
                 env.Append(DPATH = [phobosDir])
diff --git a/engine/SCons/Tool/dvi.py b/engine/SCons/Tool/dvi.py
index ce91cca..7eb9de4 100644
--- a/engine/SCons/Tool/dvi.py
+++ b/engine/SCons/Tool/dvi.py
@@ -27,7 +27,7 @@ Common DVI Builder definition for various other Tool modules that use it.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/dvi.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/dvi.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Builder
 import SCons.Tool
diff --git a/engine/SCons/Tool/dvipdf.py b/engine/SCons/Tool/dvipdf.py
index cf6909d..1b352b3 100644
--- a/engine/SCons/Tool/dvipdf.py
+++ b/engine/SCons/Tool/dvipdf.py
@@ -29,9 +29,8 @@ selection method.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Tool/dvipdf.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/dvipdf.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Action
 import SCons.Defaults
@@ -88,7 +87,7 @@ def PDFEmitter(target, source, env):
     """
     def strip_suffixes(n):
         return not SCons.Util.splitext(str(n))[1] in ['.aux', '.log']
-    source = filter(strip_suffixes, source)
+    source = list(filter(strip_suffixes, source))
     return (target, source)
 
 def generate(env):
diff --git a/engine/SCons/Tool/dvips.py b/engine/SCons/Tool/dvips.py
index be8a5fe..d6e7006 100644
--- a/engine/SCons/Tool/dvips.py
+++ b/engine/SCons/Tool/dvips.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/dvips.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/dvips.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Action
 import SCons.Builder
diff --git a/engine/SCons/Tool/f77.py b/engine/SCons/Tool/f77.py
index 17e7b6e..d4ec887 100644
--- a/engine/SCons/Tool/f77.py
+++ b/engine/SCons/Tool/f77.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/f77.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/f77.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Defaults
 import SCons.Scanner.Fortran
diff --git a/engine/SCons/Tool/f90.py b/engine/SCons/Tool/f90.py
index 8db5824..b8829b7 100644
--- a/engine/SCons/Tool/f90.py
+++ b/engine/SCons/Tool/f90.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/f90.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/f90.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Defaults
 import SCons.Scanner.Fortran
diff --git a/engine/SCons/Tool/f95.py b/engine/SCons/Tool/f95.py
index fc00566..66be308 100644
--- a/engine/SCons/Tool/f95.py
+++ b/engine/SCons/Tool/f95.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/f95.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/f95.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/engine/SCons/Tool/filesystem.py b/engine/SCons/Tool/filesystem.py
index c015390..6bceb14 100644
--- a/engine/SCons/Tool/filesystem.py
+++ b/engine/SCons/Tool/filesystem.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/filesystem.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/filesystem.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons
 from SCons.Tool.install import copyFunc
@@ -44,12 +44,12 @@ def copyto_emitter(target, source, env):
     n_target = []
 
     for t in target:
-        n_target = n_target + map( lambda s, t=t: t.File( str( s ) ), source )
+        n_target = n_target + [t.File( str( s ) ) for s in source]
 
     return (n_target, source)
 
 def copy_action_func(target, source, env):
-    assert( len(target) == len(source) ), "\ntarget: %s\nsource: %s" %(map(str, target),map(str, source))
+    assert( len(target) == len(source) ), "\ntarget: %s\nsource: %s" %(list(map(str, target)),list(map(str, source)))
 
     for t, s in zip(target, source):
         if copyFunc(t.get_path(), s.get_path(), env):
diff --git a/engine/SCons/Tool/fortran.py b/engine/SCons/Tool/fortran.py
index fea2660..f7b4e8d 100644
--- a/engine/SCons/Tool/fortran.py
+++ b/engine/SCons/Tool/fortran.py
@@ -31,10 +31,9 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/fortran.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/fortran.py 5023 2010/06/14 22:05:46 scons"
 
 import re
-import string
 
 import SCons.Action
 import SCons.Defaults
diff --git a/engine/SCons/Tool/g++.py b/engine/SCons/Tool/g++.py
index 019939a..fa93329 100644
--- a/engine/SCons/Tool/g++.py
+++ b/engine/SCons/Tool/g++.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/g++.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/g++.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
 import re
diff --git a/engine/SCons/Tool/g77.py b/engine/SCons/Tool/g77.py
index 3b50b6d..c21f34b 100644
--- a/engine/SCons/Tool/g77.py
+++ b/engine/SCons/Tool/g77.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/g77.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/g77.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Util
 from SCons.Tool.FortranCommon import add_all_to_env, add_f77_to_env
diff --git a/engine/SCons/Tool/gas.py b/engine/SCons/Tool/gas.py
index 52255ab..0ec021a 100644
--- a/engine/SCons/Tool/gas.py
+++ b/engine/SCons/Tool/gas.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/gas.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/gas.py 5023 2010/06/14 22:05:46 scons"
 
 as_module = __import__('as', globals(), locals(), [])
 
diff --git a/engine/SCons/Tool/gcc.py b/engine/SCons/Tool/gcc.py
index 5994854..5d1a7d5 100644
--- a/engine/SCons/Tool/gcc.py
+++ b/engine/SCons/Tool/gcc.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/gcc.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/gcc.py 5023 2010/06/14 22:05:46 scons"
 
 import cc
 import os
diff --git a/engine/SCons/Tool/gfortran.py b/engine/SCons/Tool/gfortran.py
index 863e82a..2a3872e 100644
--- a/engine/SCons/Tool/gfortran.py
+++ b/engine/SCons/Tool/gfortran.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/gfortran.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/gfortran.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Util
 
diff --git a/engine/SCons/Tool/gnulink.py b/engine/SCons/Tool/gnulink.py
index 71071f1..9845a69 100644
--- a/engine/SCons/Tool/gnulink.py
+++ b/engine/SCons/Tool/gnulink.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/gnulink.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/gnulink.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Util
 
diff --git a/engine/SCons/Tool/gs.py b/engine/SCons/Tool/gs.py
index 0e6deef..8ab63d7 100644
--- a/engine/SCons/Tool/gs.py
+++ b/engine/SCons/Tool/gs.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/gs.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/gs.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Action
 import SCons.Platform
@@ -69,7 +69,7 @@ def generate(env):
 
 
 def exists(env):
-    if env.has_key('PS2PDF'):
+    if 'PS2PDF' in env:
         return env.Detect(env['PS2PDF'])
     else:
         return env.Detect(gs) or SCons.Util.WhereIs(gs)
diff --git a/engine/SCons/Tool/hpc++.py b/engine/SCons/Tool/hpc++.py
index 28d766f..5be3854 100644
--- a/engine/SCons/Tool/hpc++.py
+++ b/engine/SCons/Tool/hpc++.py
@@ -31,10 +31,9 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/hpc++.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/hpc++.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
-import string
 
 import SCons.Util
 
@@ -67,8 +66,8 @@ def generate(env):
         env['SHCXXFLAGS'] = SCons.Util.CLVar('$CXXFLAGS +Z')
         # determine version of aCC
         line = os.popen(acc + ' -V 2>&1').readline().rstrip()
-        if string.find(line, 'aCC: HP ANSI C++') == 0:
-            env['CXXVERSION'] = string.split(line)[-1]
+        if line.find('aCC: HP ANSI C++') == 0:
+            env['CXXVERSION'] = line.split()[-1]
 
         if env['PLATFORM'] == 'cygwin':
             env['SHCXXFLAGS'] = SCons.Util.CLVar('$CXXFLAGS')
diff --git a/engine/SCons/Tool/hpcc.py b/engine/SCons/Tool/hpcc.py
index f2ab04f..24b48c7 100644
--- a/engine/SCons/Tool/hpcc.py
+++ b/engine/SCons/Tool/hpcc.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/hpcc.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/hpcc.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Util
 
diff --git a/engine/SCons/Tool/hplink.py b/engine/SCons/Tool/hplink.py
index f6eff45..b2ad1ca 100644
--- a/engine/SCons/Tool/hplink.py
+++ b/engine/SCons/Tool/hplink.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/hplink.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/hplink.py 5023 2010/06/14 22:05:46 scons"
 
 import os
 import os.path
diff --git a/engine/SCons/Tool/icc.py b/engine/SCons/Tool/icc.py
index 0d4e617..fd5affe 100644
--- a/engine/SCons/Tool/icc.py
+++ b/engine/SCons/Tool/icc.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/icc.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/icc.py 5023 2010/06/14 22:05:46 scons"
 
 import cc
 
diff --git a/engine/SCons/Tool/icl.py b/engine/SCons/Tool/icl.py
index ce98156..f1da778 100644
--- a/engine/SCons/Tool/icl.py
+++ b/engine/SCons/Tool/icl.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/icl.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/icl.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Tool.intelc
 
@@ -40,10 +40,10 @@ import SCons.Tool.intelc
 
 def generate(*args, **kw):
     """Add Builders and construction variables for icl to an Environment."""
-    return apply(SCons.Tool.intelc.generate, args, kw)
+    return SCons.Tool.intelc.generate(*args, **kw)
 
 def exists(*args, **kw):
-    return apply(SCons.Tool.intelc.exists, args, kw)
+    return SCons.Tool.intelc.exists(*args, **kw)
 
 # Local Variables:
 # tab-width:4
diff --git a/engine/SCons/Tool/ifl.py b/engine/SCons/Tool/ifl.py
index 93dc977..17ceb34 100644
--- a/engine/SCons/Tool/ifl.py
+++ b/engine/SCons/Tool/ifl.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/ifl.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/ifl.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Defaults
 from SCons.Scanner.Fortran import FortranScan
@@ -43,12 +43,12 @@ def generate(env):
     SCons.Tool.SourceFileScanner.add_scanner('.i', fscan)
     SCons.Tool.SourceFileScanner.add_scanner('.i90', fscan)
 
-    if not env.has_key('FORTRANFILESUFFIXES'):
+    if 'FORTRANFILESUFFIXES' not in env:
         env['FORTRANFILESUFFIXES'] = ['.i']
     else:
         env['FORTRANFILESUFFIXES'].append('.i')
 
-    if not env.has_key('F90FILESUFFIXES'):
+    if 'F90FILESUFFIXES' not in env:
         env['F90FILESUFFIXES'] = ['.i90']
     else:
         env['F90FILESUFFIXES'].append('.i90')
diff --git a/engine/SCons/Tool/ifort.py b/engine/SCons/Tool/ifort.py
index 047afba..06bf484 100644
--- a/engine/SCons/Tool/ifort.py
+++ b/engine/SCons/Tool/ifort.py
@@ -32,9 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/ifort.py 4720 2010/03/24 03:14:11 jars"
-
-import string
+__revision__ = "src/engine/SCons/Tool/ifort.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Defaults
 from SCons.Scanner.Fortran import FortranScan
@@ -48,12 +46,12 @@ def generate(env):
     SCons.Tool.SourceFileScanner.add_scanner('.i', fscan)
     SCons.Tool.SourceFileScanner.add_scanner('.i90', fscan)
 
-    if not env.has_key('FORTRANFILESUFFIXES'):
+    if 'FORTRANFILESUFFIXES' not in env:
         env['FORTRANFILESUFFIXES'] = ['.i']
     else:
         env['FORTRANFILESUFFIXES'].append('.i')
 
-    if not env.has_key('F90FILESUFFIXES'):
+    if 'F90FILESUFFIXES' not in env:
         env['F90FILESUFFIXES'] = ['.i90']
     else:
         env['F90FILESUFFIXES'].append('.i90')
@@ -75,7 +73,7 @@ def generate(env):
         for dialect in ['F77', 'F90', 'FORTRAN', 'F95']:
             for var in ['%sCOM' % dialect, '%sPPCOM' % dialect,
                         'SH%sCOM' % dialect, 'SH%sPPCOM' % dialect]:
-                env[var] = string.replace(env[var], '-o $TARGET', '-object:$TARGET')
+                env[var] = env[var].replace('-o $TARGET', '-object:$TARGET')
         env['FORTRANMODDIRPREFIX'] = "/module:"
     else:
         env['FORTRANMODDIRPREFIX'] = "-module "
diff --git a/engine/SCons/Tool/ilink.py b/engine/SCons/Tool/ilink.py
index 4d8395f..71025d1 100644
--- a/engine/SCons/Tool/ilink.py
+++ b/engine/SCons/Tool/ilink.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/ilink.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/ilink.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/engine/SCons/Tool/ilink32.py b/engine/SCons/Tool/ilink32.py
index 1765193..fb570f8 100644
--- a/engine/SCons/Tool/ilink32.py
+++ b/engine/SCons/Tool/ilink32.py
@@ -27,7 +27,7 @@ XXX
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/ilink32.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/ilink32.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Tool
 import SCons.Tool.bcc32
diff --git a/engine/SCons/Tool/install.py b/engine/SCons/Tool/install.py
index 0d7b9d5..7b61bde 100644
--- a/engine/SCons/Tool/install.py
+++ b/engine/SCons/Tool/install.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/install.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/install.py 5023 2010/06/14 22:05:46 scons"
 
 import os
 import shutil
@@ -54,7 +54,7 @@ def copyFunc(dest, source, env):
     if os.path.isdir(source):
         if os.path.exists(dest):
             if not os.path.isdir(dest):
-                raise SCons.Errors.UserError, "cannot overwrite non-directory `%s' with a directory `%s'" % (str(dest), str(source))
+                raise SCons.Errors.UserError("cannot overwrite non-directory `%s' with a directory `%s'" % (str(dest), str(source)))
         else:
             parent = os.path.split(dest)[0]
             if not os.path.exists(parent):
@@ -76,7 +76,7 @@ def installFunc(target, source, env):
         raise SCons.Errors.UserError('Missing INSTALL construction variable.')
 
     assert len(target)==len(source), \
-           "Installing source %s into target %s: target and source lists must have same length."%(map(str, source), map(str, target))
+           "Installing source %s into target %s: target and source lists must have same length."%(list(map(str, source)), list(map(str, target)))
     for t,s in zip(target,source):
         if install(t.get_path(),s.get_path(),env):
             return 1
@@ -108,7 +108,7 @@ def add_targets_to_INSTALLED_FILES(target, source, env):
     _UNIQUE_INSTALLED_FILES = None
     return (target, source)
 
-class DESTDIR_factory:
+class DESTDIR_factory(object):
     """ a node factory, where all files will be relative to the dir supplied
     in the constructor.
     """
@@ -135,7 +135,7 @@ BaseInstallBuilder               = None
 def InstallBuilderWrapper(env, target=None, source=None, dir=None, **kw):
     if target and dir:
         import SCons.Errors
-        raise SCons.Errors.UserError, "Both target and dir defined for Install(), only one may be defined."
+        raise SCons.Errors.UserError("Both target and dir defined for Install(), only one may be defined.")
     if not dir:
         dir=target
 
@@ -149,7 +149,7 @@ def InstallBuilderWrapper(env, target=None, source=None, dir=None, **kw):
     try:
         dnodes = env.arg2nodes(dir, target_factory.Dir)
     except TypeError:
-        raise SCons.Errors.UserError, "Target `%s' of Install() is a file, but should be a directory.  Perhaps you have the Install() arguments backwards?" % str(dir)
+        raise SCons.Errors.UserError("Target `%s' of Install() is a file, but should be a directory.  Perhaps you have the Install() arguments backwards?" % str(dir))
     sources = env.arg2nodes(source, env.fs.Entry)
     tgt = []
     for dnode in dnodes:
@@ -159,14 +159,14 @@ def InstallBuilderWrapper(env, target=None, source=None, dir=None, **kw):
             # be relative to the top-level SConstruct directory.
             target = env.fs.Entry('.'+os.sep+src.name, dnode)
             #tgt.extend(BaseInstallBuilder(env, target, src, **kw))
-            tgt.extend(apply(BaseInstallBuilder, (env, target, src), kw))
+            tgt.extend(BaseInstallBuilder(env, target, src, **kw))
     return tgt
 
 def InstallAsBuilderWrapper(env, target=None, source=None, **kw):
     result = []
     for src, tgt in map(lambda x, y: (x, y), source, target):
         #result.extend(BaseInstallBuilder(env, tgt, src, **kw))
-        result.extend(apply(BaseInstallBuilder, (env, tgt, src), kw))
+        result.extend(BaseInstallBuilder(env, tgt, src, **kw))
     return result
 
 added = None
diff --git a/engine/SCons/Tool/intelc.py b/engine/SCons/Tool/intelc.py
index a9b23d3..10e92cd 100644
--- a/engine/SCons/Tool/intelc.py
+++ b/engine/SCons/Tool/intelc.py
@@ -30,15 +30,15 @@ selection method.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
+from __future__ import division
 
-__revision__ = "src/engine/SCons/Tool/intelc.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/intelc.py 5023 2010/06/14 22:05:46 scons"
 
 import math, sys, os.path, glob, string, re
 
 is_windows = sys.platform == 'win32'
 is_win64 = is_windows and (os.environ['PROCESSOR_ARCHITECTURE'] == 'AMD64' or 
-                           (os.environ.has_key('PROCESSOR_ARCHITEW6432') and
+                           ('PROCESSOR_ARCHITEW6432' in os.environ and
                             os.environ['PROCESSOR_ARCHITEW6432'] == 'AMD64'))
 is_linux = sys.platform == 'linux2'
 is_mac     = sys.platform == 'darwin'
@@ -69,7 +69,7 @@ def uniquify(s):
     u = {}
     for x in s:
         u[x] = 1
-    return u.keys()
+    return list(u.keys())
 
 def linux_ver_normalize(vstr):
     """Normalize a Linux compiler version number.
@@ -81,7 +81,7 @@ def linux_ver_normalize(vstr):
     m = re.match(r'([0-9]+)\.([0-9]+)\.([0-9]+)', vstr)
     if m:
         vmaj,vmin,build = m.groups()
-        return float(vmaj) * 10 + float(vmin) + float(build) / 1000.;
+        return float(vmaj) * 10. + float(vmin) + float(build) / 1000.;
     else:
         f = float(vstr)
         if is_windows:
@@ -117,9 +117,8 @@ def check_abi(abi):
     try:
         abi = valid_abis[abi]
     except KeyError:
-        raise SCons.Errors.UserError, \
-              "Intel compiler: Invalid ABI %s, valid values are %s"% \
-              (abi, valid_abis.keys())
+        raise SCons.Errors.UserError("Intel compiler: Invalid ABI %s, valid values are %s"% \
+              (abi, list(valid_abis.keys())))
     return abi
 
 def vercmp(a, b):
@@ -156,16 +155,14 @@ def get_intel_registry_value(valuename, version=None, abi=None):
     try:
         k = SCons.Util.RegOpenKeyEx(SCons.Util.HKEY_LOCAL_MACHINE, K)
     except SCons.Util.RegError:
-        raise MissingRegistryError, \
-              "%s was not found in the registry, for Intel compiler version %s, abi='%s'"%(K, version,abi)
+        raise MissingRegistryError("%s was not found in the registry, for Intel compiler version %s, abi='%s'"%(K, version,abi))
 
     # Get the value:
     try:
         v = SCons.Util.RegQueryValueEx(k, valuename)[0]
         return v  # or v.encode('iso-8859-1', 'replace') to remove unicode?
     except SCons.Util.RegError:
-        raise MissingRegistryError, \
-              "%s\\%s was not found in the registry."%(K, valuename)
+        raise MissingRegistryError("%s\\%s was not found in the registry."%(K, valuename))
 
 
 def get_all_compiler_versions():
@@ -243,9 +240,7 @@ def get_all_compiler_versions():
             m = re.search(r'([0-9.]+)$', d)
             if m:
                 versions.append(m.group(1))
-    versions = uniquify(versions)       # remove dups
-    versions.sort(vercmp)
-    return versions
+    return sorted(uniquify(versions))       # remove dups
 
 def get_intel_compiler_top(version, abi):
     """
@@ -257,13 +252,12 @@ def get_intel_compiler_top(version, abi):
 
     if is_windows:
         if not SCons.Util.can_read_reg:
-            raise NoRegistryModuleError, "No Windows registry module was found"
+            raise NoRegistryModuleError("No Windows registry module was found")
         top = get_intel_registry_value('ProductDir', version, abi)
         # pre-11, icl was in Bin.  11 and later, it's in Bin/<abi> apparently.
         if not os.path.exists(os.path.join(top, "Bin", "icl.exe")) \
               and not os.path.exists(os.path.join(top, "Bin", abi, "icl.exe")):
-            raise MissingDirError, \
-                  "Can't find Intel compiler in %s"%(top)
+            raise MissingDirError("Can't find Intel compiler in %s"%(top))
     elif is_mac or is_linux:
         # first dir is new (>=9.0) style, second is old (8.0) style.
         dirs=('/opt/intel/cc/%s', '/opt/intel_cc_%s')
@@ -275,8 +269,7 @@ def get_intel_compiler_top(version, abi):
                 top = d%version
                 break
         if not top:
-            raise MissingDirError, \
-                  "Can't find version %s Intel compiler in %s (abi='%s')"%(version,top, abi)
+            raise MissingDirError("Can't find version %s Intel compiler in %s (abi='%s')"%(version,top, abi))
     return top
 
 
@@ -312,9 +305,8 @@ def generate(env, version=None, abi=None, topdir=None, verbose=0):
         # get_version_from_list does that mapping.
         v = get_version_from_list(version, vlist)
         if not v:
-            raise SCons.Errors.UserError, \
-                  "Invalid Intel compiler version %s: "%version + \
-                  "installed versions are %s"%(', '.join(vlist))
+            raise SCons.Errors.UserError("Invalid Intel compiler version %s: "%version + \
+                  "installed versions are %s"%(', '.join(vlist)))
         version = v
 
     # if abi is unspecified, use ia32
@@ -406,7 +398,7 @@ def generate(env, version=None, abi=None, topdir=None, verbose=0):
                     # Couldn't get it from registry: use default subdir of topdir
                     env.PrependENVPath(p[0], os.path.join(topdir, p[2]))
                 else:
-                    env.PrependENVPath(p[0], string.split(path, os.pathsep))
+                    env.PrependENVPath(p[0], path.split(os.pathsep))
                     # print "ICL %s: %s, final=%s"%(p[0], path, str(env['ENV'][p[0]]))
 
     if is_windows:
@@ -445,7 +437,7 @@ def generate(env, version=None, abi=None, topdir=None, verbose=0):
         for ld in [envlicdir, reglicdir]:
             # If the string contains an '@', then assume it's a network
             # license (port@system) and good by definition.
-            if ld and (string.find(ld, '@') != -1 or os.path.exists(ld)):
+            if ld and (ld.find('@') != -1 or os.path.exists(ld)):
                 licdir = ld
                 break
         if not licdir:
diff --git a/engine/SCons/Tool/ipkg.py b/engine/SCons/Tool/ipkg.py
index 3e8d223..c692053 100644
--- a/engine/SCons/Tool/ipkg.py
+++ b/engine/SCons/Tool/ipkg.py
@@ -33,10 +33,9 @@ packages fake_root.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/ipkg.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/ipkg.py 5023 2010/06/14 22:05:46 scons"
 
 import os
-import string
 
 import SCons.Builder
 
@@ -53,11 +52,8 @@ def generate(env):
 
     env['IPKG']       = 'ipkg-build'
     env['IPKGCOM']    = '$IPKG $IPKGFLAGS ${SOURCE}'
-    # TODO(1.5)
-    #env['IPKGUSER']   = os.popen('id -un').read().strip()
-    #env['IPKGGROUP']  = os.popen('id -gn').read().strip()
-    env['IPKGUSER']   = string.strip(os.popen('id -un').read())
-    env['IPKGGROUP']  = string.strip(os.popen('id -gn').read())
+    env['IPKGUSER']   = os.popen('id -un').read().strip()
+    env['IPKGGROUP']  = os.popen('id -gn').read().strip()
     env['IPKGFLAGS']  = SCons.Util.CLVar('-o $IPKGUSER -g $IPKGGROUP')
     env['IPKGSUFFIX'] = '.ipk'
 
diff --git a/engine/SCons/Tool/jar.py b/engine/SCons/Tool/jar.py
index 2aaab96..9cb4eff 100644
--- a/engine/SCons/Tool/jar.py
+++ b/engine/SCons/Tool/jar.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/jar.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/jar.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Subst
 import SCons.Util
diff --git a/engine/SCons/Tool/javac.py b/engine/SCons/Tool/javac.py
index df237a8..66651c3 100644
--- a/engine/SCons/Tool/javac.py
+++ b/engine/SCons/Tool/javac.py
@@ -29,13 +29,11 @@ selection method.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Tool/javac.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/javac.py 5023 2010/06/14 22:05:46 scons"
 
 import os
 import os.path
-import string
 
 import SCons.Action
 import SCons.Builder
@@ -45,7 +43,7 @@ import SCons.Util
 
 def classname(path):
     """Turn a string (path name) into a Java class name."""
-    return string.replace(os.path.normpath(path), os.sep, '.')
+    return os.path.normpath(path).replace(os.sep, '.')
 
 def emit_java_classes(target, source, env):
     """Create and return lists of source java files
@@ -67,27 +65,25 @@ def emit_java_classes(target, source, env):
 
     slist = []
     js = _my_normcase(java_suffix)
-    find_java = lambda n, js=js, ljs=len(js): _my_normcase(n[-ljs:]) == js
     for entry in source:
         entry = entry.rentry().disambiguate()
         if isinstance(entry, SCons.Node.FS.File):
             slist.append(entry)
         elif isinstance(entry, SCons.Node.FS.Dir):
             result = SCons.Util.OrderedDict()
-            def visit(arg, dirname, names, fj=find_java, dirnode=entry.rdir()):
-                java_files = filter(fj, names)
-                # The on-disk entries come back in arbitrary order.  Sort
-                # them so our target and source lists are determinate.
-                java_files.sort()
-                mydir = dirnode.Dir(dirname)
-                java_paths = map(lambda f, d=mydir: d.File(f), java_files)
+            dirnode = entry.rdir()
+            def find_java_files(arg, dirpath, filenames):
+                java_files = sorted([n for n in filenames
+                                       if _my_normcase(n).endswith(js)])
+                mydir = dirnode.Dir(dirpath)
+                java_paths = [mydir.File(f) for f in java_files]
                 for jp in java_paths:
                      arg[jp] = True
+            for dirpath, dirnames, filenames in os.walk(dirnode.get_abspath()):
+               find_java_files(result, dirpath, filenames)
+            entry.walk(find_java_files, result)
 
-            os.path.walk(entry.rdir().get_abspath(), visit, result)
-            entry.walk(visit, result)
-
-            slist.extend(result.keys())
+            slist.extend(list(result.keys()))
         else:
             raise SCons.Errors.UserError("Java source must be File or Dir, not '%s'" % entry.__class__)
 
@@ -139,7 +135,7 @@ JavaBuilder = SCons.Builder.Builder(action = JavaAction,
                     target_factory = SCons.Node.FS.Entry,
                     source_factory = SCons.Node.FS.Entry)
 
-class pathopt:
+class pathopt(object):
     """
     Callable object for generating javac-style path options from
     a construction variable (e.g. -classpath, -sourcepath).
@@ -156,8 +152,8 @@ class pathopt:
         if self.default:
             path = path + [ env[self.default] ]
         if path:
-            return [self.opt, string.join(path, os.pathsep)]
-            #return self.opt + " " + string.join(path, os.pathsep)
+            return [self.opt, os.pathsep.join(path)]
+            #return self.opt + " " + os.pathsep.join(path)
         else:
             return []
             #return ""
@@ -194,7 +190,7 @@ def Java(env, target, source, *args, **kw):
                 b = env.JavaClassFile
             else:
                 b = env.JavaClassDir
-        result.extend(apply(b, (t, s) + args, kw))
+        result.extend(b(t, s, *args, **kw))
 
     return result
 
diff --git a/engine/SCons/Tool/javah.py b/engine/SCons/Tool/javah.py
index 6a4314c..e92c423 100644
--- a/engine/SCons/Tool/javah.py
+++ b/engine/SCons/Tool/javah.py
@@ -31,10 +31,9 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/javah.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/javah.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
-import string
 
 import SCons.Action
 import SCons.Builder
@@ -93,7 +92,7 @@ def emit_java_headers(target, source, env):
             target[0]._morph()
         tlist = []
         for s in source:
-            fname = string.replace(s.attributes.java_classname, '.', '_') + '.h'
+            fname = s.attributes.java_classname.replace('.', '_') + '.h'
             t = target[0].File(fname)
             t.attributes.java_lookupdir = target[0]
             tlist.append(t)
@@ -112,7 +111,7 @@ def JavaHOutFlagGenerator(target, source, env, for_signature):
 
 def getJavaHClassPath(env,target, source, for_signature):
     path = "${SOURCE.attributes.java_classdir}"
-    if env.has_key('JAVACLASSPATH') and env['JAVACLASSPATH']:
+    if 'JAVACLASSPATH' in env and env['JAVACLASSPATH']:
         path = SCons.Util.AppendPath(path, env['JAVACLASSPATH'])
     return "-classpath %s" % (path)
 
diff --git a/engine/SCons/Tool/latex.py b/engine/SCons/Tool/latex.py
index 56db43f..e4f1a51 100644
--- a/engine/SCons/Tool/latex.py
+++ b/engine/SCons/Tool/latex.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/latex.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/latex.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Action
 import SCons.Defaults
@@ -44,7 +44,7 @@ import SCons.Tool.tex
 def LaTeXAuxFunction(target = None, source= None, env=None):
     result = SCons.Tool.tex.InternalLaTeXAuxAction( SCons.Tool.tex.LaTeXAction, target, source, env )
     if result != 0:
-        print env['LATEX']," returned an error, check the log file"
+        SCons.Tool.tex.check_file_error_message(env['LATEX'])
     return result
 
 LaTeXAuxAction = SCons.Action.Action(LaTeXAuxFunction,
diff --git a/engine/SCons/Tool/lex.py b/engine/SCons/Tool/lex.py
index 920ff5f..aad5004 100644
--- a/engine/SCons/Tool/lex.py
+++ b/engine/SCons/Tool/lex.py
@@ -31,12 +31,10 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/lex.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/lex.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
 
-import string
-
 import SCons.Action
 import SCons.Tool
 import SCons.Util
@@ -62,7 +60,7 @@ def lexEmitter(target, source, env):
             if option[:l] == fileGenOption:
                 # A file generating option is present, so add the
                 # file name to the target list.
-                fileName = string.strip(option[l:])
+                fileName = option[l:].strip()
                 target.append(fileName)
     return (target, source)
 
diff --git a/engine/SCons/Tool/link.py b/engine/SCons/Tool/link.py
index 2b6ccec..5905fe9 100644
--- a/engine/SCons/Tool/link.py
+++ b/engine/SCons/Tool/link.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/link.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/link.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/engine/SCons/Tool/linkloc.py b/engine/SCons/Tool/linkloc.py
index abf29f4..ab5b735 100644
--- a/engine/SCons/Tool/linkloc.py
+++ b/engine/SCons/Tool/linkloc.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/linkloc.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/linkloc.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
 import re
@@ -61,7 +61,7 @@ def repl_linker_command(m):
         # to find it with recursive substitution
         return m.group(1) + '#' + m.group(2)
 
-class LinklocGenerator:
+class LinklocGenerator(object):
     def __init__(self, cmdline):
         self.cmdline = cmdline
 
diff --git a/engine/SCons/Tool/m4.py b/engine/SCons/Tool/m4.py
index 48935cf..f43b594 100644
--- a/engine/SCons/Tool/m4.py
+++ b/engine/SCons/Tool/m4.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/m4.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/m4.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Action
 import SCons.Builder
diff --git a/engine/SCons/Tool/masm.py b/engine/SCons/Tool/masm.py
index a4e91fc..5bb936a 100644
--- a/engine/SCons/Tool/masm.py
+++ b/engine/SCons/Tool/masm.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/masm.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/masm.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/engine/SCons/Tool/midl.py b/engine/SCons/Tool/midl.py
index f1f4375..67660d1 100644
--- a/engine/SCons/Tool/midl.py
+++ b/engine/SCons/Tool/midl.py
@@ -31,9 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/midl.py 4720 2010/03/24 03:14:11 jars"
-
-import string
+__revision__ = "src/engine/SCons/Tool/midl.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Action
 import SCons.Builder
@@ -53,10 +51,10 @@ def midl_emitter(target, source, env):
 
     midlcom = env['MIDLCOM']
 
-    if string.find(midlcom, '/proxy') != -1:
+    if midlcom.find('/proxy') != -1:
         proxy = base + '_p.c'
         t.append(proxy)
-    if string.find(midlcom, '/dlldata') != -1:
+    if midlcom.find('/dlldata') != -1:
         dlldata = base + '_data.c'
         t.append(dlldata)
     
diff --git a/engine/SCons/Tool/mingw.py b/engine/SCons/Tool/mingw.py
index e93f1ad..6df46e0 100644
--- a/engine/SCons/Tool/mingw.py
+++ b/engine/SCons/Tool/mingw.py
@@ -31,11 +31,10 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/mingw.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/mingw.py 5023 2010/06/14 22:05:46 scons"
 
 import os
 import os.path
-import string
 
 import SCons.Action
 import SCons.Builder
@@ -73,7 +72,7 @@ def shlib_emitter(target, source, env):
     no_import_lib = env.get('no_import_lib', 0)
 
     if not dll:
-        raise SCons.Errors.UserError, "A shared library should have exactly one target with the suffix: %s" % env.subst("$SHLIBSUFFIX")
+        raise SCons.Errors.UserError("A shared library should have exactly one target with the suffix: %s" % env.subst("$SHLIBSUFFIX"))
     
     if not no_import_lib and \
        not env.FindIxes(target, 'LIBPREFIX', 'LIBSUFFIX'):
diff --git a/engine/SCons/Tool/mslib.py b/engine/SCons/Tool/mslib.py
index c568abd..a2933cb 100644
--- a/engine/SCons/Tool/mslib.py
+++ b/engine/SCons/Tool/mslib.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/mslib.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/mslib.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/engine/SCons/Tool/mslink.py b/engine/SCons/Tool/mslink.py
index 36ad2fe..c291ba9 100644
--- a/engine/SCons/Tool/mslink.py
+++ b/engine/SCons/Tool/mslink.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/mslink.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/mslink.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
 
@@ -103,7 +103,7 @@ def _dllEmitter(target, source, env, paramtp):
     no_import_lib = env.get('no_import_lib', 0)
 
     if not dll:
-        raise SCons.Errors.UserError, 'A shared library should have exactly one target with the suffix: %s' % env.subst('$%sSUFFIX' % paramtp)
+        raise SCons.Errors.UserError('A shared library should have exactly one target with the suffix: %s' % env.subst('$%sSUFFIX' % paramtp))
 
     insert_def = env.subst("$WINDOWS_INSERT_DEF")
     if not insert_def in ['', '0', 0] and \
@@ -123,7 +123,7 @@ def _dllEmitter(target, source, env, paramtp):
                             '%sPREFIX' % paramtp, '%sSUFFIX' % paramtp,
                             "WINDOWSSHLIBMANIFESTPREFIX", "WINDOWSSHLIBMANIFESTSUFFIX"))
 
-    if env.has_key('PDB') and env['PDB']:
+    if 'PDB' in env and env['PDB']:
         pdb = env.arg2nodes('$PDB', target=target, source=source)[0]
         extratargets.append(pdb)
         target[0].attributes.pdb = pdb
@@ -161,7 +161,7 @@ def prog_emitter(target, source, env):
 
     exe = env.FindIxes(target, "PROGPREFIX", "PROGSUFFIX")
     if not exe:
-        raise SCons.Errors.UserError, "An executable should have exactly one target with the suffix: %s" % env.subst("$PROGSUFFIX")
+        raise SCons.Errors.UserError("An executable should have exactly one target with the suffix: %s" % env.subst("$PROGSUFFIX"))
 
     version_num, suite = SCons.Tool.msvs.msvs_parse_version(env.get('MSVS_VERSION', '6.0'))
     if version_num >= 8.0 and env.get('WINDOWS_INSERT_MANIFEST', 0):
@@ -171,7 +171,7 @@ def prog_emitter(target, source, env):
                             "PROGPREFIX", "PROGSUFFIX",
                             "WINDOWSPROGMANIFESTPREFIX", "WINDOWSPROGMANIFESTSUFFIX"))
 
-    if env.has_key('PDB') and env['PDB']:
+    if 'PDB' in env and env['PDB']:
         pdb = env.arg2nodes('$PDB', target=target, source=source)[0]
         extratargets.append(pdb)
         target[0].attributes.pdb = pdb
@@ -179,10 +179,10 @@ def prog_emitter(target, source, env):
     return (target+extratargets,source)
 
 def RegServerFunc(target, source, env):
-    if env.has_key('register') and env['register']:
+    if 'register' in env and env['register']:
         ret = regServerAction([target[0]], [source[0]], env)
         if ret:
-            raise SCons.Errors.UserError, "Unable to register %s" % target[0]
+            raise SCons.Errors.UserError("Unable to register %s" % target[0])
         else:
             print "Registered %s sucessfully" % target[0]
         return ret
diff --git a/engine/SCons/Tool/mssdk.py b/engine/SCons/Tool/mssdk.py
index ed5bd5c..08898c6 100644
--- a/engine/SCons/Tool/mssdk.py
+++ b/engine/SCons/Tool/mssdk.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/mssdk.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/mssdk.py 5023 2010/06/14 22:05:46 scons"
 
 """engine.SCons.Tool.mssdk
 
diff --git a/engine/SCons/Tool/msvc.py b/engine/SCons/Tool/msvc.py
index f145816..8c13580 100644
--- a/engine/SCons/Tool/msvc.py
+++ b/engine/SCons/Tool/msvc.py
@@ -31,11 +31,10 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/msvc.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/msvc.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
 import re
-import string
 import sys
 
 import SCons.Action
@@ -55,11 +54,11 @@ CXXSuffixes = ['.cc', '.cpp', '.cxx', '.c++', '.C++']
 
 def validate_vars(env):
     """Validate the PCH and PCHSTOP construction variables."""
-    if env.has_key('PCH') and env['PCH']:
-        if not env.has_key('PCHSTOP'):
-            raise SCons.Errors.UserError, "The PCHSTOP construction must be defined if PCH is defined."
+    if 'PCH' in env and env['PCH']:
+        if 'PCHSTOP' not in env:
+            raise SCons.Errors.UserError("The PCHSTOP construction must be defined if PCH is defined.")
         if not SCons.Util.is_String(env['PCHSTOP']):
-            raise SCons.Errors.UserError, "The PCHSTOP construction variable must be a string: %r"%env['PCHSTOP']
+            raise SCons.Errors.UserError("The PCHSTOP construction variable must be a string: %r"%env['PCHSTOP'])
 
 def pch_emitter(target, source, env):
     """Adds the object file target."""
@@ -99,7 +98,7 @@ def object_emitter(target, source, env, parent_emitter):
     # See issue #2505 for a discussion of what to do if it turns
     # out this assumption causes trouble in the wild:
     # http://scons.tigris.org/issues/show_bug.cgi?id=2505
-    if env.has_key('PCH'):
+    if 'PCH' in env:
         pch = env['PCH']
         if str(target[0]) != SCons.Util.splitext(str(pch))[0] + '.obj':
             env.Depends(target, pch)
@@ -254,9 +253,9 @@ def generate(env):
     env['PCHCOM'] = '$CXX /Fo${TARGETS[1]} $CXXFLAGS $CCFLAGS $CPPFLAGS $_CPPDEFFLAGS $_CPPINCFLAGS /c $SOURCES /Yc$PCHSTOP /Fp${TARGETS[0]} $CCPDBFLAGS $PCHPDBFLAGS'
     env['BUILDERS']['PCH'] = pch_builder
 
-    if not env.has_key('ENV'):
+    if 'ENV' not in env:
         env['ENV'] = {}
-    if not env['ENV'].has_key('SystemRoot'):    # required for dlls in the winsxs folders
+    if 'SystemRoot' not in env['ENV']:    # required for dlls in the winsxs folders
         env['ENV']['SystemRoot'] = SCons.Platform.win32.get_system_root()
 
 def exists(env):
diff --git a/engine/SCons/Tool/msvs.py b/engine/SCons/Tool/msvs.py
index 17bb9a0..34fc0e7 100644
--- a/engine/SCons/Tool/msvs.py
+++ b/engine/SCons/Tool/msvs.py
@@ -29,17 +29,18 @@ selection method.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Tool/msvs.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/msvs.py 5023 2010/06/14 22:05:46 scons"
+
+import SCons.compat
 
 import base64
 import hashlib
 import ntpath
 import os
+# compat layer imports "cPickle" for us if it's available.
 import pickle
 import re
-import string
 import sys
 
 import SCons.Builder
@@ -57,23 +58,10 @@ from SCons.Defaults import processDefines
 # DSP/DSW/SLN/VCPROJ files.
 ##############################################################################
 
-def _hexdigest(s):
-    """Return a string as a string of hex characters.
-    """
-    # NOTE:  This routine is a method in the Python 2.0 interface
-    # of the native md5 module, but we want SCons to operate all
-    # the way back to at least Python 1.5.2, which doesn't have it.
-    h = string.hexdigits
-    r = ''
-    for c in s:
-        i = ord(c)
-        r = r + h[(i >> 4) & 0xF] + h[i & 0xF]
-    return r
-
 def xmlify(s):
-    s = string.replace(s, "&", "&amp;") # do this first
-    s = string.replace(s, "'", "&apos;")
-    s = string.replace(s, '"', "&quot;")
+    s = s.replace("&", "&amp;") # do this first
+    s = s.replace("'", "&apos;")
+    s = s.replace('"', "&quot;")
     return s
 
 external_makefile_guid = '{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}'
@@ -88,9 +76,7 @@ def _generateGUID(slnfile, name):
     # the generated file has a consistent GUID even if we generate
     # it on a non-Windows platform.
     m.update(ntpath.normpath(str(slnfile)) + str(name))
-    # TODO(1.5)
-    #solution = m.hexdigest().upper()
-    solution = string.upper(_hexdigest(m.digest()))
+    solution = m.hexdigest().upper()
     # convert most of the signature to GUID form (discard the rest)
     solution = "{" + solution[:8] + "-" + solution[8:12] + "-" + solution[12:16] + "-" + solution[16:20] + "-" + solution[20:32] + "}"
     return solution
@@ -116,7 +102,7 @@ def msvs_parse_version(s):
 # which works regardless of how we were invoked.
 def getExecScriptMain(env, xml=None):
     scons_home = env.get('SCONS_HOME')
-    if not scons_home and os.environ.has_key('SCONS_LIB_DIR'):
+    if not scons_home and 'SCONS_LIB_DIR' in os.environ:
         scons_home = os.environ['SCONS_LIB_DIR']
     if scons_home:
         exec_script_main = "from os.path import join; import sys; sys.path = [ r'%s' ] + sys.path; import SCons.Script; SCons.Script.main()" % scons_home
@@ -139,7 +125,7 @@ else:
     python_executable = os.path.join('$$(PYTHON_ROOT)',
                                      os.path.split(sys.executable)[1])
 
-class Config:
+class Config(object):
     pass
 
 def splitFully(path):
@@ -161,7 +147,7 @@ def makeHierarchy(sources):
         if len(path):
             dict = hierarchy
             for part in path[:-1]:
-                if not dict.has_key(part):
+                if part not in dict:
                     dict[part] = {}
                 dict = dict[part]
             dict[path[-1]] = file
@@ -169,7 +155,7 @@ def makeHierarchy(sources):
         #    print 'Warning: failed to decompose path for '+str(file)
     return hierarchy
 
-class _DSPGenerator:
+class _DSPGenerator(object):
     """ Base class for DSP generators """
 
     srcargs = [
@@ -188,23 +174,21 @@ class _DSPGenerator:
         else:
             self.dspabs = get_abspath()
 
-        if not env.has_key('variant'):
-            raise SCons.Errors.InternalError, \
-                  "You must specify a 'variant' argument (i.e. 'Debug' or " +\
-                  "'Release') to create an MSVSProject."
+        if 'variant' not in env:
+            raise SCons.Errors.InternalError("You must specify a 'variant' argument (i.e. 'Debug' or " +\
+                  "'Release') to create an MSVSProject.")
         elif SCons.Util.is_String(env['variant']):
             variants = [env['variant']]
         elif SCons.Util.is_List(env['variant']):
             variants = env['variant']
 
-        if not env.has_key('buildtarget') or env['buildtarget'] == None:
+        if 'buildtarget' not in env or env['buildtarget'] == None:
             buildtarget = ['']
         elif SCons.Util.is_String(env['buildtarget']):
             buildtarget = [env['buildtarget']]
         elif SCons.Util.is_List(env['buildtarget']):
             if len(env['buildtarget']) != len(variants):
-                raise SCons.Errors.InternalError, \
-                    "Sizes of 'buildtarget' and 'variant' lists must be the same."
+                raise SCons.Errors.InternalError("Sizes of 'buildtarget' and 'variant' lists must be the same.")
             buildtarget = []
             for bt in env['buildtarget']:
                 if SCons.Util.is_String(bt):
@@ -219,14 +203,13 @@ class _DSPGenerator:
             for _ in variants:
                 buildtarget.append(bt)
 
-        if not env.has_key('outdir') or env['outdir'] == None:
+        if 'outdir' not in env or env['outdir'] == None:
             outdir = ['']
         elif SCons.Util.is_String(env['outdir']):
             outdir = [env['outdir']]
         elif SCons.Util.is_List(env['outdir']):
             if len(env['outdir']) != len(variants):
-                raise SCons.Errors.InternalError, \
-                    "Sizes of 'outdir' and 'variant' lists must be the same."
+                raise SCons.Errors.InternalError("Sizes of 'outdir' and 'variant' lists must be the same.")
             outdir = []
             for s in env['outdir']:
                 if SCons.Util.is_String(s):
@@ -241,14 +224,13 @@ class _DSPGenerator:
             for v in variants:
                 outdir.append(s)
 
-        if not env.has_key('runfile') or env['runfile'] == None:
+        if 'runfile' not in env or env['runfile'] == None:
             runfile = buildtarget[-1:]
         elif SCons.Util.is_String(env['runfile']):
             runfile = [env['runfile']]
         elif SCons.Util.is_List(env['runfile']):
             if len(env['runfile']) != len(variants):
-                raise SCons.Errors.InternalError, \
-                    "Sizes of 'runfile' and 'variant' lists must be the same."
+                raise SCons.Errors.InternalError("Sizes of 'runfile' and 'variant' lists must be the same.")
             runfile = []
             for s in env['runfile']:
                 if SCons.Util.is_String(s):
@@ -269,7 +251,7 @@ class _DSPGenerator:
 
         self.env = env
 
-        if self.env.has_key('name'):
+        if 'name' in self.env:
             self.name = self.env['name']
         else:
             self.name = os.path.basename(SCons.Util.splitext(self.dspfile)[0])
@@ -289,14 +271,14 @@ class _DSPGenerator:
         self.configs = {}
 
         self.nokeep = 0
-        if env.has_key('nokeep') and env['variant'] != 0:
+        if 'nokeep' in env and env['variant'] != 0:
             self.nokeep = 1
 
         if self.nokeep == 0 and os.path.exists(self.dspabs):
             self.Parse()
 
         for t in zip(sourcenames,self.srcargs):
-            if self.env.has_key(t[1]):
+            if t[1] in self.env:
                 if SCons.Util.is_List(self.env[t[1]]):
                     for i in self.env[t[1]]:
                         if not i in self.sources[t[0]]:
@@ -306,9 +288,9 @@ class _DSPGenerator:
                         self.sources[t[0]].append(self.env[t[1]])
 
         for n in sourcenames:
-            # TODO(1.5):
-            #self.sources[n].sort(lambda a, b: cmp(a.lower(), b.lower()))
-            self.sources[n].sort(lambda a, b: cmp(string.lower(a), string.lower(b)))
+            #TODO 2.4: compat layer supports sorted(key=) but not sort(key=)
+            #TODO 2.4: self.sources[n].sort(key=lambda a: a.lower())
+            self.sources[n] = sorted(self.sources[n], key=lambda a: a.lower())
 
         def AddConfig(self, variant, buildtarget, outdir, runfile, cmdargs, dspfile=dspfile):
             config = Config()
@@ -367,8 +349,7 @@ class _GenerateV6DSP(_DSPGenerator):
 
     def PrintHeader(self):
         # pick a default config
-        confkeys = self.configs.keys()
-        confkeys.sort()
+        confkeys = sorted(self.configs.keys())
 
         name = self.name
         confkey = confkeys[0]
@@ -388,8 +369,7 @@ class _GenerateV6DSP(_DSPGenerator):
                         '# PROP Scc_LocalPath ""\n\n')
 
         first = 1
-        confkeys = self.configs.keys()
-        confkeys.sort()
+        confkeys = sorted(self.configs.keys())
         for kind in confkeys:
             outdir = self.configs[kind].outdir
             buildtarget = self.configs[kind].buildtarget
@@ -399,7 +379,7 @@ class _GenerateV6DSP(_DSPGenerator):
             else:
                 self.file.write('\n!ELSEIF  "$(CFG)" == "%s - Win32 %s"\n\n' % (name, kind))
 
-            env_has_buildtarget = self.env.has_key('MSVSBUILDTARGET')
+            env_has_buildtarget = 'MSVSBUILDTARGET' in self.env
             if not env_has_buildtarget:
                 self.env['MSVSBUILDTARGET'] = buildtarget
 
@@ -407,9 +387,7 @@ class _GenerateV6DSP(_DSPGenerator):
             for base in ("BASE ",""):
                 self.file.write('# PROP %sUse_MFC 0\n'
                                 '# PROP %sUse_Debug_Libraries ' % (base, base))
-                # TODO(1.5):
-                #if kind.lower().find('debug') < 0:
-                if string.find(string.lower(kind), 'debug') < 0:
+                if kind.lower().find('debug') < 0:
                     self.file.write('0\n')
                 else:
                     self.file.write('1\n')
@@ -459,18 +437,12 @@ class _GenerateV6DSP(_DSPGenerator):
                       'Resource Files': 'r|rc|ico|cur|bmp|dlg|rc2|rct|bin|cnt|rtf|gif|jpg|jpeg|jpe',
                       'Other Files': ''}
 
-        cats = categories.keys()
-        # TODO(1.5):
-        #cats.sort(lambda a, b: cmp(a.lower(), b.lower()))
-        cats.sort(lambda a, b: cmp(string.lower(a), string.lower(b)))
-        for kind in cats:
+        for kind in sorted(categories.keys(), key=lambda a: a.lower()):
             if not self.sources[kind]:
                 continue # skip empty groups
 
             self.file.write('# Begin Group "' + kind + '"\n\n')
-            # TODO(1.5)
-            #typelist = categories[kind].replace('|', ';')
-            typelist = string.replace(categories[kind], '|', ';')
+            typelist = categories[kind].replace('|', ';')
             self.file.write('# PROP Default_Filter "' + typelist + '"\n')
 
             for file in self.sources[kind]:
@@ -493,9 +465,7 @@ class _GenerateV6DSP(_DSPGenerator):
 
         line = dspfile.readline()
         while line:
-            # TODO(1.5):
-            #if line.find("# End Project") > -1:
-            if string.find(line, "# End Project") > -1:
+            if line.find("# End Project") > -1:
                 break
             line = dspfile.readline()
 
@@ -539,7 +509,7 @@ class _GenerateV6DSP(_DSPGenerator):
         try:
             self.file = open(self.dspabs,'w')
         except IOError, detail:
-            raise SCons.Errors.InternalError, 'Unable to open "' + self.dspabs + '" for writing:' + str(detail)
+            raise SCons.Errors.InternalError('Unable to open "' + self.dspabs + '" for writing:' + str(detail))
         else:
             self.PrintHeader()
             self.PrintProject()
@@ -664,8 +634,7 @@ class _GenerateV7DSP(_DSPGenerator):
     def PrintProject(self):
         self.file.write('\t<Configurations>\n')
 
-        confkeys = self.configs.keys()
-        confkeys.sort()
+        confkeys = sorted(self.configs.keys())
         for kind in confkeys:
             variant = self.configs[kind].variant
             platform = self.configs[kind].platform
@@ -674,7 +643,7 @@ class _GenerateV7DSP(_DSPGenerator):
             runfile     = self.configs[kind].runfile
             cmdargs = self.configs[kind].cmdargs
 
-            env_has_buildtarget = self.env.has_key('MSVSBUILDTARGET')
+            env_has_buildtarget = 'MSVSBUILDTARGET' in self.env
             if not env_has_buildtarget:
                 self.env['MSVSBUILDTARGET'] = buildtarget
 
@@ -687,11 +656,8 @@ class _GenerateV7DSP(_DSPGenerator):
             rebuildcmd  = xmlify(starting + self.env.subst('$MSVSREBUILDCOM', 1) + cmdargs)
             cleancmd    = xmlify(starting + self.env.subst('$MSVSCLEANCOM', 1) + cmdargs)
 
-            # TODO(1.5)
-            #preprocdefs = xmlify(';'.join(self.env.get('CPPDEFINES', [])))
-            #includepath = xmlify(';'.join(self.env.get('CPPPATH', [])))
-            preprocdefs = xmlify(string.join(processDefines(self.env.get('CPPDEFINES', [])), ';'))
-            includepath = xmlify(string.join(self.env.get('CPPPATH', []), ';'))
+            preprocdefs = xmlify(';'.join(processDefines(self.env.get('CPPDEFINES', []))))
+            includepath = xmlify(';'.join(self.env.get('CPPPATH', [])))
 
             if not env_has_buildtarget:
                 del self.env['MSVSBUILDTARGET']
@@ -718,10 +684,7 @@ class _GenerateV7DSP(_DSPGenerator):
             self.file.write(pdata + '-->\n')
 
     def printSources(self, hierarchy, commonprefix):
-        sorteditems = hierarchy.items()
-        # TODO(1.5):
-        #sorteditems.sort(lambda a, b: cmp(a[0].lower(), b[0].lower()))
-        sorteditems.sort(lambda a, b: cmp(string.lower(a[0]), string.lower(b[0])))
+        sorteditems = sorted(hierarchy.items(), key=lambda a: a[0].lower())
 
         # First folders, then files
         for key, value in sorteditems:
@@ -751,11 +714,8 @@ class _GenerateV7DSP(_DSPGenerator):
 
         self.file.write('\t<Files>\n')
 
-        cats = categories.keys()
-        # TODO(1.5)
-        #cats.sort(lambda a, b: cmp(a.lower(), b.lower()))
-        cats.sort(lambda a, b: cmp(string.lower(a), string.lower(b)))
-        cats = filter(lambda k, s=self: s.sources[k], cats)
+        cats = sorted([k for k in categories.keys() if self.sources[k]],
+                      key=lambda a: a.lower())
         for kind in cats:
             if len(cats) > 1:
                 self.file.write('\t\t<Filter\n'
@@ -767,14 +727,14 @@ class _GenerateV7DSP(_DSPGenerator):
             # First remove any common prefix
             commonprefix = None
             if len(sources) > 1:
-                s = map(os.path.normpath, sources)
+                s = list(map(os.path.normpath, sources))
                 # take the dirname because the prefix may include parts
                 # of the filenames (e.g. if you have 'dir\abcd' and
                 # 'dir\acde' then the cp will be 'dir\a' )
                 cp = os.path.dirname( os.path.commonprefix(s) )
                 if cp and s[0][len(cp)] == os.sep:
                     # +1 because the filename starts after the separator
-                    sources = map(lambda s, l=len(cp)+1: s[l:], sources)
+                    sources = [s[len(cp)+1:] for s in sources]
                     commonprefix = cp
             elif len(sources) == 1:
                 commonprefix = os.path.dirname( sources[0] )
@@ -803,9 +763,7 @@ class _GenerateV7DSP(_DSPGenerator):
 
         line = dspfile.readline()
         while line:
-            # TODO(1.5)
-            #if line.find('<!-- SCons Data:') > -1:
-            if string.find(line, '<!-- SCons Data:') > -1:
+            if line.find('<!-- SCons Data:') > -1:
                 break
             line = dspfile.readline()
 
@@ -848,32 +806,29 @@ class _GenerateV7DSP(_DSPGenerator):
         try:
             self.file = open(self.dspabs,'w')
         except IOError, detail:
-            raise SCons.Errors.InternalError, 'Unable to open "' + self.dspabs + '" for writing:' + str(detail)
+            raise SCons.Errors.InternalError('Unable to open "' + self.dspabs + '" for writing:' + str(detail))
         else:
             self.PrintHeader()
             self.PrintProject()
             self.file.close()
 
-class _DSWGenerator:
+class _DSWGenerator(object):
     """ Base class for DSW generators """
     def __init__(self, dswfile, source, env):
         self.dswfile = os.path.normpath(str(dswfile))
         self.env = env
 
-        if not env.has_key('projects'):
-            raise SCons.Errors.UserError, \
-                "You must specify a 'projects' argument to create an MSVSSolution."
+        if 'projects' not in env:
+            raise SCons.Errors.UserError("You must specify a 'projects' argument to create an MSVSSolution.")
         projects = env['projects']
         if not SCons.Util.is_List(projects):
-            raise SCons.Errors.InternalError, \
-                "The 'projects' argument must be a list of nodes."
+            raise SCons.Errors.InternalError("The 'projects' argument must be a list of nodes.")
         projects = SCons.Util.flatten(projects)
         if len(projects) < 1:
-            raise SCons.Errors.UserError, \
-                "You must specify at least one project to create an MSVSSolution."
-        self.dspfiles = map(str, projects)
+            raise SCons.Errors.UserError("You must specify at least one project to create an MSVSSolution.")
+        self.dspfiles = list(map(str, projects))
 
-        if self.env.has_key('name'):
+        if 'name' in self.env:
             self.name = self.env['name']
         else:
             self.name = os.path.basename(SCons.Util.splitext(self.dswfile)[0])
@@ -898,7 +853,7 @@ class _GenerateV7DSW(_DSWGenerator):
         if self.version_num >= 8.0:
             self.versionstr = '9.00'
 
-        if env.has_key('slnguid') and env['slnguid']:
+        if 'slnguid' in env and env['slnguid']:
             self.slnguid = env['slnguid']
         else:
             self.slnguid = _generateGUID(dswfile, self.name)
@@ -906,7 +861,7 @@ class _GenerateV7DSW(_DSWGenerator):
         self.configs = {}
 
         self.nokeep = 0
-        if env.has_key('nokeep') and env['variant'] != 0:
+        if 'nokeep' in env and env['variant'] != 0:
             self.nokeep = 1
 
         if self.nokeep == 0 and os.path.exists(self.dswfile):
@@ -926,10 +881,9 @@ class _GenerateV7DSW(_DSWGenerator):
             self.configs[variant] = config
             print "Adding '" + self.name + ' - ' + config.variant + '|' + config.platform + "' to '" + str(dswfile) + "'"
 
-        if not env.has_key('variant'):
-            raise SCons.Errors.InternalError, \
-                  "You must specify a 'variant' argument (i.e. 'Debug' or " +\
-                  "'Release') to create an MSVS Solution File."
+        if 'variant' not in env:
+            raise SCons.Errors.InternalError("You must specify a 'variant' argument (i.e. 'Debug' or " +\
+                  "'Release') to create an MSVS Solution File.")
         elif SCons.Util.is_String(env['variant']):
             AddConfig(self, env['variant'])
         elif SCons.Util.is_List(env['variant']):
@@ -992,11 +946,11 @@ class _GenerateV7DSW(_DSWGenerator):
         self.file.write('Global\n')
 
         env = self.env
-        if env.has_key('MSVS_SCC_PROVIDER'):
+        if 'MSVS_SCC_PROVIDER' in env:
             dspfile_base = os.path.basename(self.dspfile)
             slnguid = self.slnguid
             scc_provider = env.get('MSVS_SCC_PROVIDER', '')
-            scc_provider = string.replace(scc_provider, ' ', r'\u0020')
+            scc_provider = scc_provider.replace(' ', r'\u0020')
             scc_project_name = env.get('MSVS_SCC_PROJECT_NAME', '')
             # scc_aux_path = env.get('MSVS_SCC_AUX_PATH', '')
             scc_local_path = env.get('MSVS_SCC_LOCAL_PATH', '')
@@ -1022,8 +976,7 @@ class _GenerateV7DSW(_DSWGenerator):
         else:
             self.file.write('\tGlobalSection(SolutionConfiguration) = preSolution\n')
 
-        confkeys = self.configs.keys()
-        confkeys.sort()
+        confkeys = sorted(self.configs.keys())
         cnt = 0
         for name in confkeys:
             variant = self.configs[name].variant
@@ -1077,7 +1030,7 @@ class _GenerateV7DSW(_DSWGenerator):
         try:
             self.file = open(self.dswfile,'w')
         except IOError, detail:
-            raise SCons.Errors.InternalError, 'Unable to open "' + self.dswfile + '" for writing:' + str(detail)
+            raise SCons.Errors.InternalError('Unable to open "' + self.dswfile + '" for writing:' + str(detail))
         else:
             self.PrintSolution()
             self.file.close()
@@ -1126,7 +1079,7 @@ class _GenerateV6DSW(_DSWGenerator):
         try:
             self.file = open(self.dswfile,'w')
         except IOError, detail:
-            raise SCons.Errors.InternalError, 'Unable to open "' + self.dswfile + '" for writing:' + str(detail)
+            raise SCons.Errors.InternalError('Unable to open "' + self.dswfile + '" for writing:' + str(detail))
         else:
             self.PrintWorkspace()
             self.file.close()
@@ -1136,7 +1089,7 @@ def GenerateDSP(dspfile, source, env):
     """Generates a Project file based on the version of MSVS that is being used"""
 
     version_num = 6.0
-    if env.has_key('MSVS_VERSION'):
+    if 'MSVS_VERSION' in env:
         version_num, suite = msvs_parse_version(env['MSVS_VERSION'])
     if version_num >= 7.0:
         g = _GenerateV7DSP(dspfile, source, env)
@@ -1149,7 +1102,7 @@ def GenerateDSW(dswfile, source, env):
     """Generates a Solution/Workspace file based on the version of MSVS that is being used"""
 
     version_num = 6.0
-    if env.has_key('MSVS_VERSION'):
+    if 'MSVS_VERSION' in env:
         version_num, suite = msvs_parse_version(env['MSVS_VERSION'])
     if version_num >= 7.0:
         g = _GenerateV7DSW(dswfile, source, env)
@@ -1225,7 +1178,7 @@ def projectEmitter(target, source, env):
         source = source + env.subst('$MSVSSCONSCOM', 1)
         source = source + env.subst('$MSVSENCODING', 1)
 
-        if env.has_key('buildtarget') and env['buildtarget'] != None:
+        if 'buildtarget' in env and env['buildtarget'] != None:
             if SCons.Util.is_String(env['buildtarget']):
                 source = source + ' "%s"' % env['buildtarget']
             elif SCons.Util.is_List(env['buildtarget']):
@@ -1234,14 +1187,12 @@ def projectEmitter(target, source, env):
                         source = source + ' "%s"' % bt
                     else:
                         try: source = source + ' "%s"' % bt.get_abspath()
-                        except AttributeError: raise SCons.Errors.InternalError, \
-                            "buildtarget can be a string, a node, a list of strings or nodes, or None"
+                        except AttributeError: raise SCons.Errors.InternalError("buildtarget can be a string, a node, a list of strings or nodes, or None")
             else:
                 try: source = source + ' "%s"' % env['buildtarget'].get_abspath()
-                except AttributeError: raise SCons.Errors.InternalError, \
-                    "buildtarget can be a string, a node, a list of strings or nodes, or None"
+                except AttributeError: raise SCons.Errors.InternalError("buildtarget can be a string, a node, a list of strings or nodes, or None")
 
-        if env.has_key('outdir') and env['outdir'] != None:
+        if 'outdir' in env and env['outdir'] != None:
             if SCons.Util.is_String(env['outdir']):
                 source = source + ' "%s"' % env['outdir']
             elif SCons.Util.is_List(env['outdir']):
@@ -1250,20 +1201,18 @@ def projectEmitter(target, source, env):
                         source = source + ' "%s"' % s
                     else:
                         try: source = source + ' "%s"' % s.get_abspath()
-                        except AttributeError: raise SCons.Errors.InternalError, \
-                            "outdir can be a string, a node, a list of strings or nodes, or None"
+                        except AttributeError: raise SCons.Errors.InternalError("outdir can be a string, a node, a list of strings or nodes, or None")
             else:
                 try: source = source + ' "%s"' % env['outdir'].get_abspath()
-                except AttributeError: raise SCons.Errors.InternalError, \
-                    "outdir can be a string, a node, a list of strings or nodes, or None"
+                except AttributeError: raise SCons.Errors.InternalError("outdir can be a string, a node, a list of strings or nodes, or None")
 
-        if env.has_key('name'):
+        if 'name' in env:
             if SCons.Util.is_String(env['name']):
                 source = source + ' "%s"' % env['name']
             else:
-                raise SCons.Errors.InternalError, "name must be a string"
+                raise SCons.Errors.InternalError("name must be a string")
 
-        if env.has_key('variant'):
+        if 'variant' in env:
             if SCons.Util.is_String(env['variant']):
                 source = source + ' "%s"' % env['variant']
             elif SCons.Util.is_List(env['variant']):
@@ -1271,14 +1220,14 @@ def projectEmitter(target, source, env):
                     if SCons.Util.is_String(variant):
                         source = source + ' "%s"' % variant
                     else:
-                        raise SCons.Errors.InternalError, "name must be a string or a list of strings"
+                        raise SCons.Errors.InternalError("name must be a string or a list of strings")
             else:
-                raise SCons.Errors.InternalError, "variant must be a string or a list of strings"
+                raise SCons.Errors.InternalError("variant must be a string or a list of strings")
         else:
-            raise SCons.Errors.InternalError, "variant must be specified"
+            raise SCons.Errors.InternalError("variant must be specified")
 
         for s in _DSPGenerator.srcargs:
-            if env.has_key(s):
+            if s in env:
                 if SCons.Util.is_String(env[s]):
                     source = source + ' "%s' % env[s]
                 elif SCons.Util.is_List(env[s]):
@@ -1286,9 +1235,9 @@ def projectEmitter(target, source, env):
                         if SCons.Util.is_String(t):
                             source = source + ' "%s"' % t
                         else:
-                            raise SCons.Errors.InternalError, s + " must be a string or a list of strings"
+                            raise SCons.Errors.InternalError(s + " must be a string or a list of strings")
                 else:
-                    raise SCons.Errors.InternalError, s + " must be a string or a list of strings"
+                    raise SCons.Errors.InternalError(s + " must be a string or a list of strings")
 
         source = source + ' "%s"' % str(target[0])
         source = [SCons.Node.Python.Value(source)]
@@ -1320,13 +1269,13 @@ def solutionEmitter(target, source, env):
     if not source:
         source = 'sln_inputs:'
 
-        if env.has_key('name'):
+        if 'name' in env:
             if SCons.Util.is_String(env['name']):
                 source = source + ' "%s"' % env['name']
             else:
-                raise SCons.Errors.InternalError, "name must be a string"
+                raise SCons.Errors.InternalError("name must be a string")
 
-        if env.has_key('variant'):
+        if 'variant' in env:
             if SCons.Util.is_String(env['variant']):
                 source = source + ' "%s"' % env['variant']
             elif SCons.Util.is_List(env['variant']):
@@ -1334,19 +1283,19 @@ def solutionEmitter(target, source, env):
                     if SCons.Util.is_String(variant):
                         source = source + ' "%s"' % variant
                     else:
-                        raise SCons.Errors.InternalError, "name must be a string or a list of strings"
+                        raise SCons.Errors.InternalError("name must be a string or a list of strings")
             else:
-                raise SCons.Errors.InternalError, "variant must be a string or a list of strings"
+                raise SCons.Errors.InternalError("variant must be a string or a list of strings")
         else:
-            raise SCons.Errors.InternalError, "variant must be specified"
+            raise SCons.Errors.InternalError("variant must be specified")
 
-        if env.has_key('slnguid'):
+        if 'slnguid' in env:
             if SCons.Util.is_String(env['slnguid']):
                 source = source + ' "%s"' % env['slnguid']
             else:
-                raise SCons.Errors.InternalError, "slnguid must be a string"
+                raise SCons.Errors.InternalError("slnguid must be a string")
 
-        if env.has_key('projects'):
+        if 'projects' in env:
             if SCons.Util.is_String(env['projects']):
                 source = source + ' "%s"' % env['projects']
             elif SCons.Util.is_List(env['projects']):
@@ -1410,11 +1359,11 @@ def generate(env):
     # Set-up ms tools paths for default version
     msvc_setup_env_once(env)
 
-    if env.has_key('MSVS_VERSION'):
+    if 'MSVS_VERSION' in env:
         version_num, suite = msvs_parse_version(env['MSVS_VERSION'])
     else:
         (version_num, suite) = (7.0, None) # guess at a default
-    if not env.has_key('MSVS'):
+    if 'MSVS' not in env:
         env['MSVS'] = {}
     if (version_num < 7.0):
         env['MSVS']['PROJECTSUFFIX']  = '.dsp'
diff --git a/engine/SCons/Tool/mwcc.py b/engine/SCons/Tool/mwcc.py
index ec97ab5..fe6f0b3 100644
--- a/engine/SCons/Tool/mwcc.py
+++ b/engine/SCons/Tool/mwcc.py
@@ -30,11 +30,10 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/mwcc.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/mwcc.py 5023 2010/06/14 22:05:46 scons"
 
 import os
 import os.path
-import string
 
 import SCons.Util
 
@@ -80,8 +79,8 @@ def set_vars(env):
     ENV['CWFolder'] = version.path
     ENV['LM_LICENSE_FILE'] = version.license
     plus = lambda x: '+%s' % x
-    ENV['MWCIncludes'] = string.join(map(plus, version.includes), os.pathsep)
-    ENV['MWLibraries'] = string.join(map(plus, version.libs), os.pathsep)
+    ENV['MWCIncludes'] = os.pathsep.join(map(plus, version.includes))
+    ENV['MWLibraries'] = os.pathsep.join(map(plus, version.libs))
     return 1
 
 
@@ -100,7 +99,7 @@ def find_versions():
             product_key = SCons.Util.RegOpenKeyEx(HLM, product)
 
             i = 0
-            while 1:
+            while True:
                 name = product + '\\' + SCons.Util.RegEnumKey(product_key, i)
                 name_key = SCons.Util.RegOpenKeyEx(HLM, name)
 
@@ -120,7 +119,7 @@ def find_versions():
     return versions
 
 
-class MWVersion:
+class MWVersion(object):
     def __init__(self, version, path, platform):
         self.version = version
         self.path = path
diff --git a/engine/SCons/Tool/mwld.py b/engine/SCons/Tool/mwld.py
index 9880876..73d9f32 100644
--- a/engine/SCons/Tool/mwld.py
+++ b/engine/SCons/Tool/mwld.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/mwld.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/mwld.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Tool
 
@@ -85,7 +85,7 @@ def shlib_emitter(target, source, env):
     no_import_lib = env.get('no_import_lib', 0)
 
     if not dll:
-        raise SCons.Errors.UserError, "A shared library should have exactly one target with the suffix: %s" % env.subst("$SHLIBSUFFIX")
+        raise SCons.Errors.UserError("A shared library should have exactly one target with the suffix: %s" % env.subst("$SHLIBSUFFIX"))
 
     if not no_import_lib and \
        not env.FindIxes(target, 'LIBPREFIX', 'LIBSUFFIX'):
diff --git a/engine/SCons/Tool/nasm.py b/engine/SCons/Tool/nasm.py
index fe469d6..212e323 100644
--- a/engine/SCons/Tool/nasm.py
+++ b/engine/SCons/Tool/nasm.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/nasm.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/nasm.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/engine/SCons/Tool/packaging/__init__.py b/engine/SCons/Tool/packaging/__init__.py
index 3ef610c..e7d684e 100644
--- a/engine/SCons/Tool/packaging/__init__.py
+++ b/engine/SCons/Tool/packaging/__init__.py
@@ -24,9 +24,8 @@ SCons Packaging Tool.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Tool/packaging/__init__.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/packaging/__init__.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Environment
 from SCons.Variables import *
@@ -58,7 +57,7 @@ def Tag(env, target, source, *more_tags, **kw_tags):
         kw_tags[first_tag[0]] = ''
 
     if len(kw_tags) == 0 and len(more_tags) == 0:
-        raise UserError, "No tags given."
+        raise UserError("No tags given.")
 
     # XXX: sanity checks
     for x in more_tags:
@@ -91,7 +90,7 @@ def Package(env, target=None, source=None, **kw):
         source = env.FindInstalledFiles()
 
     if len(source)==0:
-        raise UserError, "No source for Package() given"
+        raise UserError("No source for Package() given")
 
     # decide which types of packages shall be built. Can be defined through
     # four mechanisms: command line argument, keyword argument,
@@ -105,16 +104,16 @@ def Package(env, target=None, source=None, **kw):
         kw['PACKAGETYPE'] = GetOption('package_type')
 
     if kw['PACKAGETYPE'] == None:
-        if env['BUILDERS'].has_key('Tar'):
+        if 'Tar' in env['BUILDERS']:
             kw['PACKAGETYPE']='targz'
-        elif env['BUILDERS'].has_key('Zip'):
+        elif 'Zip' in env['BUILDERS']:
             kw['PACKAGETYPE']='zip'
         else:
-            raise UserError, "No type for Package() given"
+            raise UserError("No type for Package() given")
 
     PACKAGETYPE=kw['PACKAGETYPE']
     if not is_List(PACKAGETYPE):
-        PACKAGETYPE=string.split(PACKAGETYPE, ',')
+        PACKAGETYPE=PACKAGETYPE.split(',')
 
     # load the needed packagers.
     def load_packager(type):
@@ -124,7 +123,7 @@ def Package(env, target=None, source=None, **kw):
         except ImportError, e:
             raise EnvironmentError("packager %s not available: %s"%(type,str(e)))
 
-    packagers=map(load_packager, PACKAGETYPE)
+    packagers=list(map(load_packager, PACKAGETYPE))
 
     # set up targets and the PACKAGEROOT
     try:
@@ -139,7 +138,7 @@ def Package(env, target=None, source=None, **kw):
             default_target = default_name%kw
             target.extend( [default_target]*size_diff )
 
-        if not kw.has_key('PACKAGEROOT'):
+        if 'PACKAGEROOT' not in kw:
             kw['PACKAGEROOT'] = default_name%kw
 
     except KeyError, e:
@@ -153,7 +152,7 @@ def Package(env, target=None, source=None, **kw):
     try:
         for packager in packagers:
             t=[target.pop(0)]
-            t=apply(packager.package, [env,t,source], kw)
+            t=packager.package(env,t,source, **kw)
             targets.extend(t)
 
         assert( len(target) == 0 )
@@ -173,8 +172,7 @@ def Package(env, target=None, source=None, **kw):
         args.remove('target')
         args.remove('source')
         # now remove any args for which we have a value in kw.
-        #args=[x for x in args if not kw.has_key(x)]
-        args=filter(lambda x, kw=kw: not kw.has_key(x), args)
+        args=[x for x in args if x not in kw]
 
         if len(args)==0:
             raise # must be a different error, so reraise
@@ -222,7 +220,7 @@ def options(opts):
     opts.AddVariables(
         EnumVariable( 'PACKAGETYPE',
                      'the type of package to create.',
-                     None, allowed_values=map( str, __all__ ),
+                     None, allowed_values=list(map( str, __all__ )),
                      ignorecase=2
                   )
     )
@@ -236,8 +234,8 @@ def copy_attr(f1, f2):
     """
     #pattrs = [x for x in dir(f1) if not hasattr(f2, x) and\
     #                                x.startswith('PACKAGING_')]
-    copyit = lambda x, f2=f2: not hasattr(f2, x) and x[:10] == 'PACKAGING_'
-    pattrs = filter(copyit, dir(f1))
+    copyit = lambda x: not hasattr(f2, x) and x[:10] == 'PACKAGING_'
+    pattrs = list(filter(copyit, dir(f1)))
     for attr in pattrs:
         setattr(f2, attr, getattr(f1, attr))
 def putintopackageroot(target, source, env, pkgroot, honor_install_location=1):
@@ -291,7 +289,7 @@ def stripinstallbuilder(target, source, env):
             (file.builder.name=="InstallBuilder" or\
              file.builder.name=="InstallAsBuilder"))
 
-    if len(filter(has_no_install_location, source)):
+    if len(list(filter(has_no_install_location, source))):
         warn(Warning, "there are files to package which have no\
         InstallBuilder attached, this might lead to irreproducible packages")
 
diff --git a/engine/SCons/Tool/packaging/ipk.py b/engine/SCons/Tool/packaging/ipk.py
index de1de7c..266bb70 100644
--- a/engine/SCons/Tool/packaging/ipk.py
+++ b/engine/SCons/Tool/packaging/ipk.py
@@ -24,7 +24,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/packaging/ipk.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/packaging/ipk.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Builder
 import SCons.Node.FS
@@ -58,7 +58,7 @@ def package(env, target, source, PACKAGEROOT, NAME, VERSION, DESCRIPTION,
     buildarchitecture = os.uname()[4]
     buildarchitecture = archmap.get(buildarchitecture, buildarchitecture)
 
-    if kw.has_key('ARCHITECTURE'):
+    if 'ARCHITECTURE' in kw:
         buildarchitecture = kw['ARCHITECTURE']
 
     # setup the kw to contain the mandatory arguments to this fucntion.
@@ -76,7 +76,7 @@ def package(env, target, source, PACKAGEROOT, NAME, VERSION, DESCRIPTION,
         target=[ "%s_%s_%s.ipk"%(NAME, VERSION, buildarchitecture) ]
 
     # now apply the Ipkg builder
-    return apply(bld, [env, target, specfile], kw)
+    return bld(env, target, specfile, **kw)
 
 def gen_ipk_dir(proot, source, env, kw):
     # make sure the packageroot is a Dir object.
@@ -98,7 +98,7 @@ def gen_ipk_dir(proot, source, env, kw):
     spec_target.append(control.File('preinst'))
 
     # apply the builder to the specfile targets
-    apply(s_bld, [env, spec_target, source], kw)
+    s_bld(env, spec_target, source, **kw)
 
     # the packageroot directory does now contain the specfiles.
     return proot
@@ -125,7 +125,7 @@ def build_specfiles(source, target, env):
 
     control_file=open_file('control', target)
 
-    if not env.has_key('X_IPK_DESCRIPTION'):
+    if 'X_IPK_DESCRIPTION' not in env:
         env['X_IPK_DESCRIPTION']="%s\n %s"%(env['SUMMARY'],
                                             env['DESCRIPTION'].replace('\n', '\n '))
 
@@ -173,7 +173,7 @@ Description: $X_IPK_DESCRIPTION
         f.close()
 
     # call a user specified function
-    if env.has_key('CHANGE_SPECFILE'):
+    if 'CHANGE_SPECFILE' in env:
         content += env['CHANGE_SPECFILE'](target)
 
     return 0
diff --git a/engine/SCons/Tool/packaging/msi.py b/engine/SCons/Tool/packaging/msi.py
index cea3483..76dca18 100644
--- a/engine/SCons/Tool/packaging/msi.py
+++ b/engine/SCons/Tool/packaging/msi.py
@@ -24,9 +24,8 @@ The msi packager.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Tool/packaging/msi.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/packaging/msi.py 5023 2010/06/14 22:05:46 scons"
 
 import os
 import SCons
@@ -65,14 +64,14 @@ def convert_to_id(s, id_set):
     charset = 'ABCDEFGHIJKLMNOPQRSTUVWXYabcdefghijklmnopqrstuvwxyz0123456789_.'
     if s[0] in '0123456789.':
         s += '_'+s
-    id = filter( lambda c : c in charset, s )
+    id = [c for c in s if c in charset]
 
     # did we already generate an id for this file?
     try:
         return id_set[id][s]
     except KeyError:
         # no we did not so initialize with the id
-        if not id_set.has_key(id): id_set[id] = { s : id }
+        if id not in id_set: id_set[id] = { s : id }
         # there is a collision, generate an id which is unique by appending
         # the collision number
         else: id_set[id][s] = id + str(len(id_set[id]))
@@ -109,7 +108,7 @@ def gen_dos_short_file_name(file, filename_set):
 
     # strip forbidden characters.
     forbidden = '."/[]:;=, '
-    fname = filter( lambda c : c not in forbidden, fname )
+    fname = [c for c in fname if c not in forbidden]
 
     # check if we already generated a filename with the same number:
     # thisis1.txt, thisis2.txt etc.
@@ -137,7 +136,7 @@ def create_feature_dict(files):
             feature = [ feature ]
 
         for f in feature:
-            if not dict.has_key( f ):
+            if f not in dict:
                 dict[ f ] = [ file ]
             else:
                 dict[ f ].append( file )
@@ -214,7 +213,7 @@ def build_wxsfile(target, source, env):
         file.write( doc.toprettyxml() )
 
         # call a user specified function
-        if env.has_key('CHANGE_SPECFILE'):
+        if 'CHANGE_SPECFILE' in env:
             env['CHANGE_SPECFILE'](target, source)
 
     except KeyError, e:
@@ -296,9 +295,11 @@ def build_wxsfile_file_section(root, files, NAME, VERSION, VENDOR, filename_set,
         upper_dir = ''
 
         # walk down the xml tree finding parts of the directory
-        dir_parts = filter( lambda d: d != '', dir_parts )
+        dir_parts = [d for d in dir_parts if d != '']
         for d in dir_parts[:]:
-            already_created = filter( lambda c: c.nodeName == 'Directory' and c.attributes['LongName'].value == escape(d), Directory.childNodes ) 
+            already_created = [c for c in Directory.childNodes
+                               if c.nodeName == 'Directory'
+                               and c.attributes['LongName'].value == escape(d)] 
 
             if already_created != []:
                 Directory = already_created[0]
@@ -464,7 +465,7 @@ def build_wxsfile_header_section(root, spec):
     Product.childNodes.append( Package )
 
     # set "mandatory" default values
-    if not spec.has_key('X_MSI_LANGUAGE'):
+    if 'X_MSI_LANGUAGE' not in spec:
         spec['X_MSI_LANGUAGE'] = '1033' # select english
 
     # mandatory sections, will throw a KeyError if the tag is not available
@@ -475,10 +476,10 @@ def build_wxsfile_header_section(root, spec):
     Package.attributes['Description']  = escape( spec['SUMMARY'] )
 
     # now the optional tags, for which we avoid the KeyErrror exception
-    if spec.has_key( 'DESCRIPTION' ):
+    if 'DESCRIPTION' in spec:
         Package.attributes['Comments'] = escape( spec['DESCRIPTION'] )
 
-    if spec.has_key( 'X_MSI_UPGRADE_CODE' ):
+    if 'X_MSI_UPGRADE_CODE' in spec:
         Package.attributes['X_MSI_UPGRADE_CODE'] = escape( spec['X_MSI_UPGRADE_CODE'] )
 
     # We hardcode the media tag as our current model cannot handle it.
@@ -511,7 +512,7 @@ def package(env, target, source, PACKAGEROOT, NAME, VERSION,
 
     # put the arguments into the env and call the specfile builder.
     env['msi_spec'] = kw
-    specfile = apply( wxs_builder, [env, target, source], kw )
+    specfile = wxs_builder(* [env, target, source], **kw)
 
     # now call the WiX Tool with the built specfile added as a source.
     msifile  = env.WiX(target, specfile)
diff --git a/engine/SCons/Tool/packaging/rpm.py b/engine/SCons/Tool/packaging/rpm.py
index 80d5a89..ff693b9 100644
--- a/engine/SCons/Tool/packaging/rpm.py
+++ b/engine/SCons/Tool/packaging/rpm.py
@@ -24,12 +24,10 @@ The rpm packager.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Tool/packaging/rpm.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/packaging/rpm.py 5023 2010/06/14 22:05:46 scons"
 
 import os
-import string
 
 import SCons.Builder
 
@@ -65,7 +63,7 @@ def package(env, target, source, PACKAGEROOT, NAME, VERSION,
         buildarchitecture = os.uname()[4]
         buildarchitecture = archmap.get(buildarchitecture, buildarchitecture)
 
-        if kw.has_key('ARCHITECTURE'):
+        if 'ARCHITECTURE' in kw:
             buildarchitecture = kw['ARCHITECTURE']
 
         fmt = '%s-%s-%s.%s.rpm'
@@ -81,9 +79,9 @@ def package(env, target, source, PACKAGEROOT, NAME, VERSION,
     del kw['source'], kw['target'], kw['env']
 
     # if no "SOURCE_URL" tag is given add a default one.
-    if not kw.has_key('SOURCE_URL'):
+    if 'SOURCE_URL' not in kw:
         #kw['SOURCE_URL']=(str(target[0])+".tar.gz").replace('.rpm', '')
-        kw['SOURCE_URL']=string.replace(str(target[0])+".tar.gz", '.rpm', '')
+        kw['SOURCE_URL']=(str(target[0])+".tar.gz").replace('.rpm', '')
 
     # mangle the source and target list for the rpmbuild
     env = OverrideEnvironment(env, kw)
@@ -92,7 +90,7 @@ def package(env, target, source, PACKAGEROOT, NAME, VERSION,
     target, source = collectintargz(target, source, env)
 
     # now call the rpm builder to actually build the packet.
-    return apply(bld, [env, target, source], kw)
+    return bld(env, target, source, **kw)
 
 def collectintargz(target, source, env):
     """ Puts all source files into a tar.gz file. """
@@ -102,21 +100,21 @@ def collectintargz(target, source, env):
 
     # filter out the target we are building the source list for.
     #sources = [s for s in sources if not (s in target)]
-    sources = filter(lambda s, t=target: not (s in t), sources)
+    sources = [s for s in sources if s not in target]
 
     # find the .spec file for rpm and add it since it is not necessarily found
     # by the FindSourceFiles function.
     #sources.extend( [s for s in source if str(s).rfind('.spec')!=-1] )
-    spec_file = lambda s: string.rfind(str(s), '.spec') != -1
-    sources.extend( filter(spec_file, source) )
+    spec_file = lambda s: str(s).rfind('.spec') != -1
+    sources.extend( list(filter(spec_file, source)) )
 
     # as the source contains the url of the source package this rpm package
     # is built from, we extract the target name
     #tarball = (str(target[0])+".tar.gz").replace('.rpm', '')
-    tarball = string.replace(str(target[0])+".tar.gz", '.rpm', '')
+    tarball = (str(target[0])+".tar.gz").replace('.rpm', '')
     try:
         #tarball = env['SOURCE_URL'].split('/')[-1]
-        tarball = string.split(env['SOURCE_URL'], '/')[-1]
+        tarball = env['SOURCE_URL'].split('/')[-1]
     except KeyError, e:
         raise SCons.Errors.UserError( "Missing PackageTag '%s' for RPM packager" % e.args[0] )
 
@@ -150,7 +148,7 @@ def build_specfile(target, source, env):
         file.close()
 
         # call a user specified function
-        if env.has_key('CHANGE_SPECFILE'):
+        if 'CHANGE_SPECFILE' in env:
             env['CHANGE_SPECFILE'](target, source)
 
     except KeyError, e:
@@ -188,16 +186,16 @@ def build_specfile_sections(spec):
 
     # Default prep, build, install and clean rules
     # TODO: optimize those build steps, to not compile the project a second time
-    if not spec.has_key('X_RPM_PREP'):
+    if 'X_RPM_PREP' not in spec:
         spec['X_RPM_PREP'] = '[ -n "$RPM_BUILD_ROOT" -a "$RPM_BUILD_ROOT" != / ] && rm -rf "$RPM_BUILD_ROOT"' + '\n%setup -q'
 
-    if not spec.has_key('X_RPM_BUILD'):
+    if 'X_RPM_BUILD' not in spec:
         spec['X_RPM_BUILD'] = 'mkdir "$RPM_BUILD_ROOT"'
 
-    if not spec.has_key('X_RPM_INSTALL'):
+    if 'X_RPM_INSTALL' not in spec:
         spec['X_RPM_INSTALL'] = 'scons --install-sandbox="$RPM_BUILD_ROOT" "$RPM_BUILD_ROOT"'
 
-    if not spec.has_key('X_RPM_CLEAN'):
+    if 'X_RPM_CLEAN' not in spec:
         spec['X_RPM_CLEAN'] = '[ -n "$RPM_BUILD_ROOT" -a "$RPM_BUILD_ROOT" != / ] && rm -rf "$RPM_BUILD_ROOT"'
 
     str = str + SimpleTagCompiler(optional_sections, mandatory=0).compile( spec )
@@ -254,7 +252,7 @@ def build_specfile_header(spec):
 #    if not s.has_key('x_rpm_BuildRequires'):
 #        s['x_rpm_BuildRequires'] = 'scons'
 
-    if not spec.has_key('X_RPM_BUILDROOT'):
+    if 'X_RPM_BUILDROOT' not in spec:
         spec['X_RPM_BUILDROOT'] = '%{_tmppath}/%{name}-%{version}-%{release}'
 
     str = str + SimpleTagCompiler(optional_header_fields, mandatory=0).compile( spec )
@@ -268,7 +266,7 @@ def build_specfile_filesection(spec, files):
     """
     str  = '%files\n'
 
-    if not spec.has_key('X_RPM_DEFATTR'):
+    if 'X_RPM_DEFATTR' not in spec:
         spec['X_RPM_DEFATTR'] = '(-,root,root)'
 
     str = str + '%%defattr %s\n' % spec['X_RPM_DEFATTR']
@@ -302,7 +300,7 @@ def build_specfile_filesection(spec, files):
 
     return str
 
-class SimpleTagCompiler:
+class SimpleTagCompiler(object):
     """ This class is a simple string substition utility:
     the replacement specfication is stored in the tagset dictionary, something
     like:
@@ -333,11 +331,11 @@ class SimpleTagCompiler:
         def strip_country_code(tag):
             return tag[:-2]
 
-        replacements = self.tagset.items()
+        replacements = list(self.tagset.items())
 
         str = ""
         #domestic = [ (k,v) for k,v in replacements if not is_international(k) ]
-        domestic = filter(lambda t, i=is_international: not i(t[0]), replacements)
+        domestic = [t for t in replacements if not is_international(t[0])]
         for key, replacement in domestic:
             try:
                 str = str + replacement % values[key]
@@ -346,12 +344,12 @@ class SimpleTagCompiler:
                     raise e
 
         #international = [ (k,v) for k,v in replacements if is_international(k) ]
-        international = filter(lambda t, i=is_international: i(t[0]), replacements)
+        international = [t for t in replacements if is_international(t[0])]
         for key, replacement in international:
             try:
                 #int_values_for_key = [ (get_country_code(k),v) for k,v in values.items() if strip_country_code(k) == key ]
-                x = filter(lambda t,key=key,s=strip_country_code: s(t[0]) == key, values.items())
-                int_values_for_key = map(lambda t,g=get_country_code: (g(t[0]),t[1]), x)
+                x = [t for t in values.items() if strip_country_code(t[0]) == key]
+                int_values_for_key = [(get_country_code(t[0]),t[1]) for t in x]
                 for v in int_values_for_key:
                     str = str + replacement % v
             except KeyError, e:
diff --git a/engine/SCons/Tool/packaging/src_tarbz2.py b/engine/SCons/Tool/packaging/src_tarbz2.py
index def9fcc..7ff3bed 100644
--- a/engine/SCons/Tool/packaging/src_tarbz2.py
+++ b/engine/SCons/Tool/packaging/src_tarbz2.py
@@ -26,7 +26,7 @@ The tarbz2 SRC packager.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/packaging/src_tarbz2.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/packaging/src_tarbz2.py 5023 2010/06/14 22:05:46 scons"
 
 from SCons.Tool.packaging import putintopackageroot
 
diff --git a/engine/SCons/Tool/packaging/src_targz.py b/engine/SCons/Tool/packaging/src_targz.py
index 0550a45..a493cde 100644
--- a/engine/SCons/Tool/packaging/src_targz.py
+++ b/engine/SCons/Tool/packaging/src_targz.py
@@ -26,7 +26,7 @@ The targz SRC packager.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/packaging/src_targz.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/packaging/src_targz.py 5023 2010/06/14 22:05:46 scons"
 
 from SCons.Tool.packaging import putintopackageroot
 
diff --git a/engine/SCons/Tool/packaging/src_zip.py b/engine/SCons/Tool/packaging/src_zip.py
index 3d7dc3f..0d89b36 100644
--- a/engine/SCons/Tool/packaging/src_zip.py
+++ b/engine/SCons/Tool/packaging/src_zip.py
@@ -26,7 +26,7 @@ The zip SRC packager.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/packaging/src_zip.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/packaging/src_zip.py 5023 2010/06/14 22:05:46 scons"
 
 from SCons.Tool.packaging import putintopackageroot
 
diff --git a/engine/SCons/Tool/packaging/tarbz2.py b/engine/SCons/Tool/packaging/tarbz2.py
index d1b9dc8..a1d6da8 100644
--- a/engine/SCons/Tool/packaging/tarbz2.py
+++ b/engine/SCons/Tool/packaging/tarbz2.py
@@ -26,7 +26,7 @@ The tarbz2 SRC packager.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/packaging/tarbz2.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/packaging/tarbz2.py 5023 2010/06/14 22:05:46 scons"
 
 from SCons.Tool.packaging import stripinstallbuilder, putintopackageroot
 
diff --git a/engine/SCons/Tool/packaging/targz.py b/engine/SCons/Tool/packaging/targz.py
index e0770f3..f2a3d49 100644
--- a/engine/SCons/Tool/packaging/targz.py
+++ b/engine/SCons/Tool/packaging/targz.py
@@ -26,7 +26,7 @@ The targz SRC packager.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/packaging/targz.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/packaging/targz.py 5023 2010/06/14 22:05:46 scons"
 
 from SCons.Tool.packaging import stripinstallbuilder, putintopackageroot
 
diff --git a/engine/SCons/Tool/packaging/zip.py b/engine/SCons/Tool/packaging/zip.py
index 7b79103..359de97 100644
--- a/engine/SCons/Tool/packaging/zip.py
+++ b/engine/SCons/Tool/packaging/zip.py
@@ -26,7 +26,7 @@ The zip SRC packager.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/packaging/zip.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/packaging/zip.py 5023 2010/06/14 22:05:46 scons"
 
 from SCons.Tool.packaging import stripinstallbuilder, putintopackageroot
 
diff --git a/engine/SCons/Tool/pdf.py b/engine/SCons/Tool/pdf.py
index c83a377..9d8aaab 100644
--- a/engine/SCons/Tool/pdf.py
+++ b/engine/SCons/Tool/pdf.py
@@ -28,7 +28,7 @@ Add an explicit action to run epstopdf to convert .eps files to .pdf
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/pdf.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/pdf.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Builder
 import SCons.Tool
diff --git a/engine/SCons/Tool/pdflatex.py b/engine/SCons/Tool/pdflatex.py
index 757f47c..368c795 100644
--- a/engine/SCons/Tool/pdflatex.py
+++ b/engine/SCons/Tool/pdflatex.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/pdflatex.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/pdflatex.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Action
 import SCons.Util
@@ -44,7 +44,7 @@ PDFLaTeXAction = None
 def PDFLaTeXAuxFunction(target = None, source= None, env=None):
     result = SCons.Tool.tex.InternalLaTeXAuxAction( PDFLaTeXAction, target, source, env )
     if result != 0:
-        print env['PDFLATEX']," returned an error, check the log file"
+        SCons.Tool.tex.check_file_error_message(env['PDFLATEX'])
     return result
 
 PDFLaTeXAuxAction = None
diff --git a/engine/SCons/Tool/pdftex.py b/engine/SCons/Tool/pdftex.py
index 90bc687..6296f7a 100644
--- a/engine/SCons/Tool/pdftex.py
+++ b/engine/SCons/Tool/pdftex.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/pdftex.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/pdftex.py 5023 2010/06/14 22:05:46 scons"
 
 import os
 import SCons.Action
@@ -59,11 +59,11 @@ def PDFTeXLaTeXFunction(target = None, source= None, env=None):
     if SCons.Tool.tex.is_LaTeX(source,env,abspath):
         result = PDFLaTeXAuxAction(target,source,env)
         if result != 0:
-            print env['PDFLATEX']," returned an error, check the log file"
+            SCons.Tool.tex.check_file_error_message(env['PDFLATEX'])
     else:
         result = PDFTeXAction(target,source,env)
         if result != 0:
-            print env['PDFTEX']," returned an error, check the log file"
+            SCons.Tool.tex.check_file_error_message(env['PDFTEX'])
     return result
 
 PDFTeXLaTeXAction = None
diff --git a/engine/SCons/Tool/qt.py b/engine/SCons/Tool/qt.py
index d63b586..90331aa 100644
--- a/engine/SCons/Tool/qt.py
+++ b/engine/SCons/Tool/qt.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/qt.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/qt.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
 import re
@@ -81,7 +81,7 @@ def find_file(filename, paths, node_factory):
             return node
     return None
 
-class _Automoc:
+class _Automoc(object):
     """
     Callable class, which works as an emitter for Programs, SharedLibraries and
     StaticLibraries.
diff --git a/engine/SCons/Tool/rmic.py b/engine/SCons/Tool/rmic.py
index 71deadf..d35ea54 100644
--- a/engine/SCons/Tool/rmic.py
+++ b/engine/SCons/Tool/rmic.py
@@ -31,10 +31,9 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/rmic.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/rmic.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
-import string
 
 import SCons.Action
 import SCons.Builder
@@ -86,7 +85,7 @@ def emit_rmic_classes(target, source, env):
     tlist = []
     for s in source:
         for suff in stub_suffixes:
-            fname = string.replace(s.attributes.java_classname, '.', os.sep) + \
+            fname = s.attributes.java_classname.replace('.', os.sep) + \
                     suff + class_suffix
             t = target[0].File(fname)
             t.attributes.java_lookupdir = target[0]
diff --git a/engine/SCons/Tool/rpcgen.py b/engine/SCons/Tool/rpcgen.py
index 22f54a9..40b6ed0 100644
--- a/engine/SCons/Tool/rpcgen.py
+++ b/engine/SCons/Tool/rpcgen.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/rpcgen.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/rpcgen.py 5023 2010/06/14 22:05:46 scons"
 
 from SCons.Builder import Builder
 import SCons.Util
diff --git a/engine/SCons/Tool/rpm.py b/engine/SCons/Tool/rpm.py
index 47b7c6f..f5c41a1 100644
--- a/engine/SCons/Tool/rpm.py
+++ b/engine/SCons/Tool/rpm.py
@@ -33,7 +33,7 @@ tar.gz consisting of the source file and a specfile.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/rpm.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/rpm.py 5023 2010/06/14 22:05:46 scons"
 
 import os
 import re
diff --git a/engine/SCons/Tool/sgiar.py b/engine/SCons/Tool/sgiar.py
index 56b2f7e..aa5d451 100644
--- a/engine/SCons/Tool/sgiar.py
+++ b/engine/SCons/Tool/sgiar.py
@@ -33,7 +33,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sgiar.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/sgiar.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/engine/SCons/Tool/sgic++.py b/engine/SCons/Tool/sgic++.py
index 5d38d50..ae6460a 100644
--- a/engine/SCons/Tool/sgic++.py
+++ b/engine/SCons/Tool/sgic++.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sgic++.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/sgic++.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Util
 
diff --git a/engine/SCons/Tool/sgicc.py b/engine/SCons/Tool/sgicc.py
index 8115452..08f42fa 100644
--- a/engine/SCons/Tool/sgicc.py
+++ b/engine/SCons/Tool/sgicc.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sgicc.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/sgicc.py 5023 2010/06/14 22:05:46 scons"
 
 import cc
 
diff --git a/engine/SCons/Tool/sgilink.py b/engine/SCons/Tool/sgilink.py
index fd0e270..0f1060f 100644
--- a/engine/SCons/Tool/sgilink.py
+++ b/engine/SCons/Tool/sgilink.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sgilink.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/sgilink.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Util
 
diff --git a/engine/SCons/Tool/sunar.py b/engine/SCons/Tool/sunar.py
index b673db2..0fe3820 100644
--- a/engine/SCons/Tool/sunar.py
+++ b/engine/SCons/Tool/sunar.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sunar.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/sunar.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/engine/SCons/Tool/sunc++.py b/engine/SCons/Tool/sunc++.py
index cde72cb..14ae59f 100644
--- a/engine/SCons/Tool/sunc++.py
+++ b/engine/SCons/Tool/sunc++.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sunc++.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/sunc++.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons
 
diff --git a/engine/SCons/Tool/suncc.py b/engine/SCons/Tool/suncc.py
index 8b4b338..4848766 100644
--- a/engine/SCons/Tool/suncc.py
+++ b/engine/SCons/Tool/suncc.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/suncc.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/suncc.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Util
 
diff --git a/engine/SCons/Tool/sunf77.py b/engine/SCons/Tool/sunf77.py
index ddc30c3..34dea3e 100644
--- a/engine/SCons/Tool/sunf77.py
+++ b/engine/SCons/Tool/sunf77.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sunf77.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/sunf77.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Util
 
diff --git a/engine/SCons/Tool/sunf90.py b/engine/SCons/Tool/sunf90.py
index 78e756b..74a3856 100644
--- a/engine/SCons/Tool/sunf90.py
+++ b/engine/SCons/Tool/sunf90.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sunf90.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/sunf90.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Util
 
diff --git a/engine/SCons/Tool/sunf95.py b/engine/SCons/Tool/sunf95.py
index 12190c4..e825f61 100644
--- a/engine/SCons/Tool/sunf95.py
+++ b/engine/SCons/Tool/sunf95.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sunf95.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/sunf95.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Util
 
diff --git a/engine/SCons/Tool/sunlink.py b/engine/SCons/Tool/sunlink.py
index 4fb8625..5af2256 100644
--- a/engine/SCons/Tool/sunlink.py
+++ b/engine/SCons/Tool/sunlink.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sunlink.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/sunlink.py 5023 2010/06/14 22:05:46 scons"
 
 import os
 import os.path
diff --git a/engine/SCons/Tool/swig.py b/engine/SCons/Tool/swig.py
index 8ad4596..85aab70 100644
--- a/engine/SCons/Tool/swig.py
+++ b/engine/SCons/Tool/swig.py
@@ -31,11 +31,10 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/swig.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/swig.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
 import re
-import string
 import subprocess
 
 import SCons.Action
@@ -72,7 +71,7 @@ def _find_modules(src):
 
     for m in matches:
         mnames.append(m[2])
-        directors = directors or string.find(m[0], 'directors') >= 0
+        directors = directors or m[0].find('directors') >= 0
     return mnames, directors
 
 def _add_director_header_targets(target, env):
@@ -97,29 +96,26 @@ def _swigEmitter(target, source, env):
                 mnames, directors = _find_modules(src)
             if directors:
                 _add_director_header_targets(target, env)
-            python_files = map(lambda m: m + ".py", mnames)
+            python_files = [m + ".py" for m in mnames]
             outdir = env.subst('$SWIGOUTDIR', target=target, source=source)
             # .py files should be generated in SWIGOUTDIR if specified,
             # otherwise in the same directory as the target
             if outdir:
-                python_files = map(lambda j, o=outdir, e=env:
-                                   e.fs.File(os.path.join(o, j)),
-                                   python_files)
+                python_files = [env.fs.File(os.path.join(outdir, j)) for j in python_files]
             else:
-                python_files = map(lambda m, d=target[0].dir:
-                                   d.File(m), python_files)
+                python_files = [target[0].dir.File(m) for m in python_files]
             target.extend(python_files)
         if "-java" in flags:
             if mnames is None:
                 mnames, directors = _find_modules(src)
             if directors:
                 _add_director_header_targets(target, env)
-            java_files = map(lambda m: [m + ".java", m + "JNI.java"], mnames)
+            java_files = [[m + ".java", m + "JNI.java"] for m in mnames]
             java_files = SCons.Util.flatten(java_files)
             outdir = env.subst('$SWIGOUTDIR', target=target, source=source)
             if outdir:
-                 java_files = map(lambda j, o=outdir: os.path.join(o, j), java_files)
-            java_files = map(env.fs.File, java_files)
+                 java_files = [os.path.join(outdir, j) for j in java_files]
+            java_files = list(map(env.fs.File, java_files))
             for jf in java_files:
                 t_from_s = lambda t, p, s, x: t.dir
                 SCons.Util.AddMethod(jf, t_from_s, 'target_from_source')
diff --git a/engine/SCons/Tool/tar.py b/engine/SCons/Tool/tar.py
index 65a16b3..0005ef7 100644
--- a/engine/SCons/Tool/tar.py
+++ b/engine/SCons/Tool/tar.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/tar.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/tar.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Action
 import SCons.Builder
diff --git a/engine/SCons/Tool/tex.py b/engine/SCons/Tool/tex.py
index 3f9dee3..b4b2819 100644
--- a/engine/SCons/Tool/tex.py
+++ b/engine/SCons/Tool/tex.py
@@ -32,12 +32,12 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/tex.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/tex.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
 import re
-import string
 import shutil
+import sys
 
 import SCons.Action
 import SCons.Node
@@ -133,6 +133,10 @@ _null = SCons.Scanner.LaTeX._null
 
 modify_env_var = SCons.Scanner.LaTeX.modify_env_var
 
+def check_file_error_message(utility, filename='log'):
+    msg = '%s returned an error, check the %s file\n' % (utility, filename)
+    sys.stdout.write(msg)
+
 def FindFile(name,suffixes,paths,env,requireExt=False):
     if requireExt:
         name,ext = SCons.Util.splitext(name)
@@ -232,8 +236,7 @@ def InternalLaTeXAuxAction(XXXLaTeXAction, target = None, source= None, env=None
     #
     # routine to update MD5 hash and compare
     #
-    # TODO(1.5):  nested scopes
-    def check_MD5(filenode, suffix, saved_hashes=saved_hashes, targetbase=targetbase):
+    def check_MD5(filenode, suffix):
         global must_rerun_latex
         # two calls to clear old csig
         filenode.clear_memoized_values()
@@ -292,13 +295,13 @@ def InternalLaTeXAuxAction(XXXLaTeXAction, target = None, source= None, env=None
                 target_aux = os.path.join(targetdir, auxfilename)
                 if os.path.exists(target_aux):
                     content = open(target_aux, "rb").read()
-                    if string.find(content, "bibdata") != -1:
+                    if content.find("bibdata") != -1:
                         if Verbose:
                             print "Need to run bibtex"
                         bibfile = env.fs.File(targetbase)
                         result = BibTeXAction(bibfile, bibfile, env)
                         if result != 0:
-                            print env['BIBTEX']," returned an error, check the blg file"
+                            check_file_error_message(env['BIBTEX'], 'blg')
                             return result
                         must_rerun_latex = check_MD5(suffix_nodes['.bbl'],'.bbl')
                         break
@@ -311,7 +314,7 @@ def InternalLaTeXAuxAction(XXXLaTeXAction, target = None, source= None, env=None
             idxfile = suffix_nodes['.idx']
             result = MakeIndexAction(idxfile, idxfile, env)
             if result != 0:
-                print env['MAKEINDEX']," returned an error, check the ilg file"
+                check_file_error_message(env['MAKEINDEX'], 'ilg')
                 return result
 
         # TO-DO: need to add a way for the user to extend this list for whatever
@@ -329,7 +332,8 @@ def InternalLaTeXAuxAction(XXXLaTeXAction, target = None, source= None, env=None
             nclfile = suffix_nodes['.nlo']
             result = MakeNclAction(nclfile, nclfile, env)
             if result != 0:
-                print env['MAKENCL']," (nomenclature) returned an error, check the nlg file"
+                check_file_error_message('%s (nomenclature)' % env['MAKENCL'],
+                                         'nlg')
                 #return result
 
         # Now decide if latex will need to be run again due to glossary.
@@ -340,7 +344,8 @@ def InternalLaTeXAuxAction(XXXLaTeXAction, target = None, source= None, env=None
             glofile = suffix_nodes['.glo']
             result = MakeGlossaryAction(glofile, glofile, env)
             if result != 0:
-                print env['MAKEGLOSSARY']," (glossary) returned an error, check the glg file"
+                check_file_error_message('%s (glossary)' % env['MAKEGLOSSARY'],
+                                         'glg')
                 #return result
 
         # Now decide if latex will need to be run again due to acronyms.
@@ -351,7 +356,8 @@ def InternalLaTeXAuxAction(XXXLaTeXAction, target = None, source= None, env=None
             acrfile = suffix_nodes['.acn']
             result = MakeAcronymsAction(acrfile, acrfile, env)
             if result != 0:
-                print env['MAKEACRONYMS']," (acronymns) returned an error, check the alg file"
+                check_file_error_message('%s (acronyms)' % env['MAKEACRONYMS'],
+                                         'alg')
                 return result
 
         # Now decide if latex needs to be run yet again to resolve warnings.
@@ -420,9 +426,7 @@ def is_LaTeX(flist,env,abspath):
         pass
     else:
         # Split at os.pathsep to convert into absolute path
-        # TODO(1.5)
-        #paths = paths.split(os.pathsep)
-        paths = string.split(paths, os.pathsep)
+        paths = paths.split(os.pathsep)
 
     # now that we have the path list restore the env
     if savedpath is _null:
@@ -488,11 +492,11 @@ def TeXLaTeXFunction(target = None, source= None, env=None):
     if is_LaTeX(source,env,abspath):
         result = LaTeXAuxAction(target,source,env)
         if result != 0:
-            print env['LATEX']," returned an error, check the log file"
+            check_file_error_message(env['LATEX'])
     else:
         result = TeXAction(target,source,env)
         if result != 0:
-            print env['TEX']," returned an error, check the log file"
+            check_file_error_message(env['TEX'])
     return result
 
 def TeXLaTeXStrFunction(target = None, source= None, env=None):
@@ -646,9 +650,7 @@ def tex_emitter_core(target, source, env, graphics_extensions):
         pass
     else:
         # Split at os.pathsep to convert into absolute path
-        # TODO(1.5)
-        #paths = paths.split(os.pathsep)
-        paths = string.split(paths, os.pathsep)
+        paths = paths.split(os.pathsep)
 
     # now that we have the path list restore the env
     if savedpath is _null:
diff --git a/engine/SCons/Tool/textfile.py b/engine/SCons/Tool/textfile.py
index 5d1611b..0293bb9 100644
--- a/engine/SCons/Tool/textfile.py
+++ b/engine/SCons/Tool/textfile.py
@@ -44,7 +44,7 @@ Textfile/Substfile builder for SCons.
     is unpredictible whether the expansion will occur.
 """
 
-__revision__ = "src/engine/SCons/Tool/textfile.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/textfile.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons
 
@@ -84,12 +84,12 @@ def _action(target, source, env):
                                          % repr(linesep), None)
 
     # create a dictionary to use for the substitutions
-    if not env.has_key('SUBST_DICT'):
+    if 'SUBST_DICT' not in env:
         subs = None    # no substitutions
     else:
         d = env['SUBST_DICT']
         if is_Dict(d):
-            d = d.items()
+            d = list(d.items())
         elif is_Sequence(d):
             pass
         else:
diff --git a/engine/SCons/Tool/tlib.py b/engine/SCons/Tool/tlib.py
index 7b03638..6344e71 100644
--- a/engine/SCons/Tool/tlib.py
+++ b/engine/SCons/Tool/tlib.py
@@ -27,7 +27,7 @@ XXX
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/tlib.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/tlib.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Tool
 import SCons.Tool.bcc32
diff --git a/engine/SCons/Tool/wix.py b/engine/SCons/Tool/wix.py
index 603092c..1a95e22 100644
--- a/engine/SCons/Tool/wix.py
+++ b/engine/SCons/Tool/wix.py
@@ -30,12 +30,11 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/wix.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/wix.py 5023 2010/06/14 22:05:46 scons"
 
 import SCons.Builder
 import SCons.Action
 import os
-import string
 
 def generate(env):
     """Add Builders and construction variables for WiX to an Environment."""
@@ -68,7 +67,7 @@ def exists(env):
     # try to find the candle.exe and light.exe tools and 
     # add the install directory to light libpath.
     #for path in os.environ['PATH'].split(os.pathsep):
-    for path in string.split(os.environ['PATH'], os.pathsep):
+    for path in os.environ['PATH'].split(os.pathsep):
         if not path:
             continue
 
diff --git a/engine/SCons/Tool/yacc.py b/engine/SCons/Tool/yacc.py
index 6b5ad3f..0f8744f 100644
--- a/engine/SCons/Tool/yacc.py
+++ b/engine/SCons/Tool/yacc.py
@@ -31,10 +31,9 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/yacc.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/yacc.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
-import string
 
 import SCons.Defaults
 import SCons.Tool
@@ -71,7 +70,7 @@ def _yaccEmitter(target, source, env, ysuf, hsuf):
             if option[:l] == fileGenOption:
                 # A file generating option is present, so add the file
                 # name to the list of targets.
-                fileName = string.strip(option[l:])
+                fileName = option[l:].strip()
                 target.append(fileName)
 
     return (target, source)
diff --git a/engine/SCons/Tool/zip.py b/engine/SCons/Tool/zip.py
index 42f23a2..36fd436 100644
--- a/engine/SCons/Tool/zip.py
+++ b/engine/SCons/Tool/zip.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/zip.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Tool/zip.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
 
@@ -49,16 +49,15 @@ except ImportError:
 if internal_zip:
     zipcompression = zipfile.ZIP_DEFLATED
     def zip(target, source, env):
-        def visit(arg, dirname, names):
-            for name in names:
-                path = os.path.join(dirname, name)
-                if os.path.isfile(path):
-                    arg.write(path)
         compression = env.get('ZIPCOMPRESSION', 0)
         zf = zipfile.ZipFile(str(target[0]), 'w', compression)
         for s in source:
             if s.isdir():
-                os.path.walk(str(s), visit, zf)
+                for dirpath, dirnames, filenames in os.walk(str(s)):
+                    for fname in filenames:
+                        path = os.path.join(dirpath, fname)
+                        if os.path.isfile(path):
+                            zf.write(path)
             else:
                 zf.write(str(s))
         zf.close()
diff --git a/engine/SCons/Util.py b/engine/SCons/Util.py
index 220eb41..a9b3421 100644
--- a/engine/SCons/Util.py
+++ b/engine/SCons/Util.py
@@ -1,9 +1,7 @@
 """SCons.Util
 
 Various utility functions go here.
-
 """
-
 #
 # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 The SCons Foundation
 #
@@ -25,29 +23,25 @@ Various utility functions go here.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Util.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Util.py 5023 2010/06/14 22:05:46 scons"
 
-import copy
 import os
-import os.path
-import re
-import string
 import sys
+import copy
+import re
 import types
 
-from UserDict import UserDict
-from UserList import UserList
-from UserString import UserString
+from collections import UserDict, UserList, UserString
 
 # Don't "from types import ..." these because we need to get at the
 # types module later to look for UnicodeType.
-DictType        = types.DictType
 InstanceType    = types.InstanceType
-ListType        = types.ListType
-StringType      = types.StringType
-TupleType       = types.TupleType
+MethodType      = types.MethodType
+FunctionType    = types.FunctionType
+try: unicode
+except NameError: UnicodeType = None
+else:             UnicodeType = unicode
 
 def dictify(keys, values, result={}):
     for k, v in zip(keys, values):
@@ -59,11 +53,11 @@ if _altsep is None and sys.platform == 'win32':
     # My ActivePython 2.0.1 doesn't set os.altsep!  What gives?
     _altsep = '/'
 if _altsep:
-    def rightmost_separator(path, sep, _altsep=_altsep):
-        rfind = string.rfind
-        return max(rfind(path, sep), rfind(path, _altsep))
+    def rightmost_separator(path, sep):
+        return max(path.rfind(sep), path.rfind(_altsep))
 else:
-    rightmost_separator = string.rfind
+    def rightmost_separator(path, sep):
+        return path.rfind(sep)
 
 # First two from the Python Cookbook, just for completeness.
 # (Yeah, yeah, YAGNI...)
@@ -88,7 +82,7 @@ def containsOnly(str, set):
 def splitext(path):
     "Same as os.path.splitext() but faster."
     sep = rightmost_separator(path, os.sep)
-    dot = string.rfind(path, '.')
+    dot = path.rfind('.')
     # An ext is only real if it has at least one non-digit char
     if dot > sep and not containsOnly(path[dot:], "0123456789."):
         return path[:dot],path[dot:]
@@ -104,7 +98,7 @@ def updrive(path):
     """
     drive, rest = os.path.splitdrive(path)
     if drive:
-        path = string.upper(drive) + rest
+        path = drive.upper() + rest
     return path
 
 class NodeList(UserList):
@@ -121,20 +115,17 @@ class NodeList(UserList):
         return len(self.data) != 0
 
     def __str__(self):
-        return string.join(map(str, self.data))
+        return ' '.join(map(str, self.data))
 
     def __iter__(self):
         return iter(self.data)
 
     def __call__(self, *args, **kwargs):
-        result = map(lambda x, args=args, kwargs=kwargs: apply(x,
-                                                               args,
-                                                               kwargs),
-                     self.data)
+        result = [x(*args, **kwargs) for x in self.data]
         return self.__class__(result)
 
     def __getattr__(self, name):
-        result = map(lambda x, n=name: getattr(x, n), self.data)
+        result = [getattr(x, name) for x in self.data]
         return self.__class__(result)
 
 
@@ -155,14 +146,14 @@ def get_environment_var(varstr):
     else:
         return None
 
-class DisplayEngine:
-    def __init__(self):
-        self.__call__ = self.print_it
-
-    def print_it(self, text, append_newline=1):
+class DisplayEngine(object):
+    print_it = True
+    def __call__(self, text, append_newline=1):
+        if not self.print_it:
+            return
         if append_newline: text = text + '\n'
         try:
-            sys.stdout.write(text)
+            sys.stdout.write(unicode(text))
         except IOError:
             # Stdout might be connected to a pipe that has been closed
             # by now. The most likely reason for the pipe being closed
@@ -173,14 +164,8 @@ class DisplayEngine:
             # before SCons exits.
             pass
 
-    def dont_print(self, text, append_newline=1):
-        pass
-
     def set_mode(self, mode):
-        if mode:
-            self.__call__ = self.print_it
-        else:
-            self.__call__ = self.dont_print
+        self.print_it = mode
 
 def render_tree(root, child_func, prune=0, margin=[0], visited={}):
     """
@@ -204,7 +189,7 @@ def render_tree(root, child_func, prune=0, margin=[0], visited={}):
         else:
             retval = retval + "  "
 
-    if visited.has_key(rname):
+    if rname in visited:
         return retval + "+-[" + rname + "]\n"
 
     retval = retval + "+-" + rname + "\n"
@@ -243,17 +228,18 @@ def print_tree(root, child_func, prune=0, showtags=0, margin=[0], visited={}):
     if showtags:
 
         if showtags == 2:
-            print ' E         = exists'
-            print '  R        = exists in repository only'
-            print '   b       = implicit builder'
-            print '   B       = explicit builder'
-            print '    S      = side effect'
-            print '     P     = precious'
-            print '      A    = always build'
-            print '       C   = current'
-            print '        N  = no clean'
-            print '         H = no cache'
-            print ''
+            legend = (' E         = exists\n' +
+                      '  R        = exists in repository only\n' +
+                      '   b       = implicit builder\n' +
+                      '   B       = explicit builder\n' +
+                      '    S      = side effect\n' +
+                      '     P     = precious\n' +
+                      '      A    = always build\n' +
+                      '       C   = current\n' +
+                      '        N  = no clean\n' +
+                      '         H = no cache\n' +
+                      '\n')
+            sys.stdout.write(unicode(legend))
 
         tags = ['[']
         tags.append(' E'[IDX(root.exists())])
@@ -273,15 +259,15 @@ def print_tree(root, child_func, prune=0, showtags=0, margin=[0], visited={}):
 
     def MMM(m):
         return ["  ","| "][m]
-    margins = map(MMM, margin[:-1])
+    margins = list(map(MMM, margin[:-1]))
 
     children = child_func(root)
 
-    if prune and visited.has_key(rname) and children:
-        print string.join(tags + margins + ['+-[', rname, ']'], '')
+    if prune and rname in visited and children:
+        sys.stdout.write(''.join(tags + margins + ['+-[', rname, ']']) + u'\n')
         return
 
-    print string.join(tags + margins + ['+-', rname], '')
+    sys.stdout.write(''.join(tags + margins + ['+-', rname]) + u'\n')
 
     visited[rname] = 1
 
@@ -304,273 +290,137 @@ def print_tree(root, child_func, prune=0, showtags=0, margin=[0], visited={}):
 # exception, but handling the exception when it's not the right type is
 # often too slow.
 
-try:
-    class mystr(str):
-        pass
-except TypeError:
-    # An older Python version without new-style classes.
-    #
-    # The actual implementations here have been selected after timings
-    # coded up in in bench/is_types.py (from the SCons source tree,
-    # see the scons-src distribution), mostly against Python 1.5.2.
-    # Key results from those timings:
-    #
-    #   --  Storing the type of the object in a variable (t = type(obj))
-    #       slows down the case where it's a native type and the first
-    #       comparison will match, but nicely speeds up the case where
-    #       it's a different native type.  Since that's going to be
-    #       common, it's a good tradeoff.
-    #
-    #   --  The data show that calling isinstance() on an object that's
-    #       a native type (dict, list or string) is expensive enough
-    #       that checking up front for whether the object is of type
-    #       InstanceType is a pretty big win, even though it does slow
-    #       down the case where it really *is* an object instance a
-    #       little bit.
-    def is_Dict(obj):
-        t = type(obj)
-        return t is DictType or \
-               (t is InstanceType and isinstance(obj, UserDict))
-
-    def is_List(obj):
-        t = type(obj)
-        return t is ListType \
-            or (t is InstanceType and isinstance(obj, UserList))
-
-    def is_Sequence(obj):
-        t = type(obj)
-        return t is ListType \
-            or t is TupleType \
-            or (t is InstanceType and isinstance(obj, UserList))
-
-    def is_Tuple(obj):
-        t = type(obj)
-        return t is TupleType
-
-    if hasattr(types, 'UnicodeType'):
-        def is_String(obj):
-            t = type(obj)
-            return t is StringType \
-                or t is UnicodeType \
-                or (t is InstanceType and isinstance(obj, UserString))
-    else:
-        def is_String(obj):
-            t = type(obj)
-            return t is StringType \
-                or (t is InstanceType and isinstance(obj, UserString))
-
-    def is_Scalar(obj):
-        return is_String(obj) or not is_Sequence(obj)
-
-    def flatten(obj, result=None):
-        """Flatten a sequence to a non-nested list.
-
-        Flatten() converts either a single scalar or a nested sequence
-        to a non-nested list. Note that flatten() considers strings
-        to be scalars instead of sequences like Python would.
-        """
-        if is_Scalar(obj):
-            return [obj]
-        if result is None:
-            result = []
-        for item in obj:
-            if is_Scalar(item):
-                result.append(item)
-            else:
-                flatten_sequence(item, result)
-        return result
-
-    def flatten_sequence(sequence, result=None):
-        """Flatten a sequence to a non-nested list.
-
-        Same as flatten(), but it does not handle the single scalar
-        case. This is slightly more efficient when one knows that
-        the sequence to flatten can not be a scalar.
-        """
-        if result is None:
-            result = []
-        for item in sequence:
-            if is_Scalar(item):
-                result.append(item)
-            else:
-                flatten_sequence(item, result)
-        return result
-
-    #
-    # Generic convert-to-string functions that abstract away whether or
-    # not the Python we're executing has Unicode support.  The wrapper
-    # to_String_for_signature() will use a for_signature() method if the
-    # specified object has one.
-    #
-    if hasattr(types, 'UnicodeType'):
-        UnicodeType = types.UnicodeType
-        def to_String(s):
-            if isinstance(s, UserString):
-                t = type(s.data)
-            else:
-                t = type(s)
-            if t is UnicodeType:
-                return unicode(s)
-            else:
-                return str(s)
-    else:
-        to_String = str
-
-    def to_String_for_signature(obj):
-        try:
-            f = obj.for_signature
-        except AttributeError:
-            return to_String_for_subst(obj)
+# We are using the following trick to speed up these
+# functions. Default arguments are used to take a snapshot of the
+# the global functions and constants used by these functions. This
+# transforms accesses to global variable into local variables
+# accesses (i.e. LOAD_FAST instead of LOAD_GLOBAL).
+
+DictTypes = (dict, UserDict)
+ListTypes = (list, UserList)
+SequenceTypes = (list, tuple, UserList)
+
+# Note that profiling data shows a speed-up when comparing
+# explicitely with str and unicode instead of simply comparing
+# with basestring. (at least on Python 2.5.1)
+StringTypes = (str, unicode, UserString)
+
+# Empirically, it is faster to check explicitely for str and
+# unicode than for basestring.
+BaseStringTypes = (str, unicode)
+
+def is_Dict(obj, isinstance=isinstance, DictTypes=DictTypes):
+    return isinstance(obj, DictTypes)
+
+def is_List(obj, isinstance=isinstance, ListTypes=ListTypes):
+    return isinstance(obj, ListTypes)
+
+def is_Sequence(obj, isinstance=isinstance, SequenceTypes=SequenceTypes):
+    return isinstance(obj, SequenceTypes)
+
+def is_Tuple(obj, isinstance=isinstance, tuple=tuple):
+    return isinstance(obj, tuple)
+
+def is_String(obj, isinstance=isinstance, StringTypes=StringTypes):
+    return isinstance(obj, StringTypes)
+
+def is_Scalar(obj, isinstance=isinstance, StringTypes=StringTypes, SequenceTypes=SequenceTypes):
+    # Profiling shows that there is an impressive speed-up of 2x
+    # when explicitely checking for strings instead of just not
+    # sequence when the argument (i.e. obj) is already a string.
+    # But, if obj is a not string then it is twice as fast to
+    # check only for 'not sequence'. The following code therefore
+    # assumes that the obj argument is a string must of the time.
+    return isinstance(obj, StringTypes) or not isinstance(obj, SequenceTypes)
+
+def do_flatten(sequence, result, isinstance=isinstance, 
+               StringTypes=StringTypes, SequenceTypes=SequenceTypes):
+    for item in sequence:
+        if isinstance(item, StringTypes) or not isinstance(item, SequenceTypes):
+            result.append(item)
         else:
-            return f()
-
-    def to_String_for_subst(s):
-        if is_Sequence( s ):
-            return string.join( map(to_String_for_subst, s) )
-
-        return to_String( s )
-
-else:
-    # A modern Python version with new-style classes, so we can just use
-    # isinstance().
-    #
-    # We are using the following trick to speed-up these
-    # functions. Default arguments are used to take a snapshot of the
-    # the global functions and constants used by these functions. This
-    # transforms accesses to global variable into local variables
-    # accesses (i.e. LOAD_FAST instead of LOAD_GLOBAL).
-
-    DictTypes = (dict, UserDict)
-    ListTypes = (list, UserList)
-    SequenceTypes = (list, tuple, UserList)
-
-    # Empirically, Python versions with new-style classes all have
-    # unicode.
-    #
-    # Note that profiling data shows a speed-up when comparing
-    # explicitely with str and unicode instead of simply comparing
-    # with basestring. (at least on Python 2.5.1)
-    StringTypes = (str, unicode, UserString)
-
-    # Empirically, it is faster to check explicitely for str and
-    # unicode than for basestring.
-    BaseStringTypes = (str, unicode)
-
-    def is_Dict(obj, isinstance=isinstance, DictTypes=DictTypes):
-        return isinstance(obj, DictTypes)
-
-    def is_List(obj, isinstance=isinstance, ListTypes=ListTypes):
-        return isinstance(obj, ListTypes)
-
-    def is_Sequence(obj, isinstance=isinstance, SequenceTypes=SequenceTypes):
-        return isinstance(obj, SequenceTypes)
-
-    def is_Tuple(obj, isinstance=isinstance, tuple=tuple):
-        return isinstance(obj, tuple)
-
-    def is_String(obj, isinstance=isinstance, StringTypes=StringTypes):
-        return isinstance(obj, StringTypes)
-
-    def is_Scalar(obj, isinstance=isinstance, StringTypes=StringTypes, SequenceTypes=SequenceTypes):
-        # Profiling shows that there is an impressive speed-up of 2x
-        # when explicitely checking for strings instead of just not
-        # sequence when the argument (i.e. obj) is already a string.
-        # But, if obj is a not string than it is twice as fast to
-        # check only for 'not sequence'. The following code therefore
-        # assumes that the obj argument is a string must of the time.
-        return isinstance(obj, StringTypes) or not isinstance(obj, SequenceTypes)
-
-    def do_flatten(sequence, result, isinstance=isinstance, 
-                   StringTypes=StringTypes, SequenceTypes=SequenceTypes):
-        for item in sequence:
-            if isinstance(item, StringTypes) or not isinstance(item, SequenceTypes):
-                result.append(item)
-            else:
-                do_flatten(item, result)
-
-    def flatten(obj, isinstance=isinstance, StringTypes=StringTypes, 
-                SequenceTypes=SequenceTypes, do_flatten=do_flatten):
-        """Flatten a sequence to a non-nested list.
-
-        Flatten() converts either a single scalar or a nested sequence
-        to a non-nested list. Note that flatten() considers strings
-        to be scalars instead of sequences like Python would.
-        """
-        if isinstance(obj, StringTypes) or not isinstance(obj, SequenceTypes):
-            return [obj]
-        result = []
-        for item in obj:
-            if isinstance(item, StringTypes) or not isinstance(item, SequenceTypes):
-                result.append(item)
-            else:
-                do_flatten(item, result)
-        return result
+            do_flatten(item, result)
 
-    def flatten_sequence(sequence, isinstance=isinstance, StringTypes=StringTypes, 
-                         SequenceTypes=SequenceTypes, do_flatten=do_flatten):
-        """Flatten a sequence to a non-nested list.
+def flatten(obj, isinstance=isinstance, StringTypes=StringTypes, 
+            SequenceTypes=SequenceTypes, do_flatten=do_flatten):
+    """Flatten a sequence to a non-nested list.
 
-        Same as flatten(), but it does not handle the single scalar
-        case. This is slightly more efficient when one knows that
-        the sequence to flatten can not be a scalar.
-        """
-        result = []
-        for item in sequence:
-            if isinstance(item, StringTypes) or not isinstance(item, SequenceTypes):
-                result.append(item)
-            else:
-                do_flatten(item, result)
-        return result
+    Flatten() converts either a single scalar or a nested sequence
+    to a non-nested list. Note that flatten() considers strings
+    to be scalars instead of sequences like Python would.
+    """
+    if isinstance(obj, StringTypes) or not isinstance(obj, SequenceTypes):
+        return [obj]
+    result = []
+    for item in obj:
+        if isinstance(item, StringTypes) or not isinstance(item, SequenceTypes):
+            result.append(item)
+        else:
+            do_flatten(item, result)
+    return result
 
+def flatten_sequence(sequence, isinstance=isinstance, StringTypes=StringTypes, 
+                     SequenceTypes=SequenceTypes, do_flatten=do_flatten):
+    """Flatten a sequence to a non-nested list.
 
-    #
-    # Generic convert-to-string functions that abstract away whether or
-    # not the Python we're executing has Unicode support.  The wrapper
-    # to_String_for_signature() will use a for_signature() method if the
-    # specified object has one.
-    #
-    def to_String(s, 
-                  isinstance=isinstance, str=str,
-                  UserString=UserString, BaseStringTypes=BaseStringTypes):
-        if isinstance(s,BaseStringTypes):
-            # Early out when already a string!
-            return s
-        elif isinstance(s, UserString):
-            # s.data can only be either a unicode or a regular
-            # string. Please see the UserString initializer.
-            return s.data
-        else:
-            return str(s)
-
-    def to_String_for_subst(s, 
-                            isinstance=isinstance, join=string.join, str=str, to_String=to_String,
-                            BaseStringTypes=BaseStringTypes, SequenceTypes=SequenceTypes,
-                            UserString=UserString):
-                            
-        # Note that the test cases are sorted by order of probability.
-        if isinstance(s, BaseStringTypes):
-            return s
-        elif isinstance(s, SequenceTypes):
-            l = []
-            for e in s:
-                l.append(to_String_for_subst(e))
-            return join( s )
-        elif isinstance(s, UserString):
-            # s.data can only be either a unicode or a regular
-            # string. Please see the UserString initializer.
-            return s.data
+    Same as flatten(), but it does not handle the single scalar
+    case. This is slightly more efficient when one knows that
+    the sequence to flatten can not be a scalar.
+    """
+    result = []
+    for item in sequence:
+        if isinstance(item, StringTypes) or not isinstance(item, SequenceTypes):
+            result.append(item)
         else:
-            return str(s)
+            do_flatten(item, result)
+    return result
 
-    def to_String_for_signature(obj, to_String_for_subst=to_String_for_subst, 
-                                AttributeError=AttributeError):
-        try:
-            f = obj.for_signature
-        except AttributeError:
-            return to_String_for_subst(obj)
-        else:
-            return f()
+# Generic convert-to-string functions that abstract away whether or
+# not the Python we're executing has Unicode support.  The wrapper
+# to_String_for_signature() will use a for_signature() method if the
+# specified object has one.
+#
+def to_String(s, 
+              isinstance=isinstance, str=str,
+              UserString=UserString, BaseStringTypes=BaseStringTypes):
+    if isinstance(s,BaseStringTypes):
+        # Early out when already a string!
+        return s
+    elif isinstance(s, UserString):
+        # s.data can only be either a unicode or a regular
+        # string. Please see the UserString initializer.
+        return s.data
+    else:
+        return str(s)
+
+def to_String_for_subst(s, 
+                        isinstance=isinstance, str=str, to_String=to_String,
+                        BaseStringTypes=BaseStringTypes, SequenceTypes=SequenceTypes,
+                        UserString=UserString):
+                        
+    # Note that the test cases are sorted by order of probability.
+    if isinstance(s, BaseStringTypes):
+        return s
+    elif isinstance(s, SequenceTypes):
+        l = []
+        for e in s:
+            l.append(to_String_for_subst(e))
+        return ' '.join( s )
+    elif isinstance(s, UserString):
+        # s.data can only be either a unicode or a regular
+        # string. Please see the UserString initializer.
+        return s.data
+    else:
+        return str(s)
 
+def to_String_for_signature(obj, to_String_for_subst=to_String_for_subst, 
+                            AttributeError=AttributeError):
+    try:
+        f = obj.for_signature
+    except AttributeError:
+        return to_String_for_subst(obj)
+    else:
+        return f()
 
 
 # The SCons "semi-deep" copy.
@@ -599,15 +449,15 @@ def _semi_deepcopy_dict(x):
         # Doesn't seem like we need to, but we'll comment it just in case.
         copy[key] = semi_deepcopy(val)
     return copy
-d[types.DictionaryType] = _semi_deepcopy_dict
+d[dict] = _semi_deepcopy_dict
 
 def _semi_deepcopy_list(x):
-    return map(semi_deepcopy, x)
-d[types.ListType] = _semi_deepcopy_list
+    return list(map(semi_deepcopy, x))
+d[list] = _semi_deepcopy_list
 
 def _semi_deepcopy_tuple(x):
     return tuple(map(semi_deepcopy, x))
-d[types.TupleType] = _semi_deepcopy_tuple
+d[tuple] = _semi_deepcopy_tuple
 
 def _semi_deepcopy_inst(x):
     if hasattr(x, '__semi_deepcopy__'):
@@ -618,7 +468,7 @@ def _semi_deepcopy_inst(x):
         return x.__class__(_semi_deepcopy_list(x))
     else:
         return x
-d[types.InstanceType] = _semi_deepcopy_inst
+d[InstanceType] = _semi_deepcopy_inst
 
 def semi_deepcopy(x):
     copier = _semi_deepcopy_dispatch.get(type(x))
@@ -629,7 +479,7 @@ def semi_deepcopy(x):
 
 
 
-class Proxy:
+class Proxy(object):
     """A simple generic Proxy class, forwarding all calls to
     subject.  So, for the benefit of the python newbie, what does
     this really mean?  Well, it means that you can take an object, let's
@@ -647,39 +497,65 @@ class Proxy:
 
                  x = objA.var1
 
-    Inherit from this class to create a Proxy."""
+    Inherit from this class to create a Proxy.
+
+    Note that, with new-style classes, this does *not* work transparently
+    for Proxy subclasses that use special .__*__() method names, because
+    those names are now bound to the class, not the individual instances.
+    You now need to know in advance which .__*__() method names you want
+    to pass on to the underlying Proxy object, and specifically delegate
+    their calls like this:
+
+        class Foo(Proxy):
+            __str__ = Delegate('__str__')
+    """
 
     def __init__(self, subject):
         """Wrap an object as a Proxy object"""
-        self.__subject = subject
+        self._subject = subject
 
     def __getattr__(self, name):
         """Retrieve an attribute from the wrapped object.  If the named
            attribute doesn't exist, AttributeError is raised"""
-        return getattr(self.__subject, name)
+        return getattr(self._subject, name)
 
     def get(self):
         """Retrieve the entire wrapped object"""
-        return self.__subject
+        return self._subject
 
     def __cmp__(self, other):
-        if issubclass(other.__class__, self.__subject.__class__):
-            return cmp(self.__subject, other)
+        if issubclass(other.__class__, self._subject.__class__):
+            return cmp(self._subject, other)
         return cmp(self.__dict__, other.__dict__)
 
+class Delegate(object):
+    """A Python Descriptor class that delegates attribute fetches
+    to an underlying wrapped subject of a Proxy.  Typical use:
+
+        class Foo(Proxy):
+            __str__ = Delegate('__str__')
+    """
+    def __init__(self, attribute):
+        self.attribute = attribute
+    def __get__(self, obj, cls):
+        if isinstance(obj, cls):
+            return getattr(obj._subject, self.attribute)
+        else:
+            return self
+
 # attempt to load the windows registry module:
 can_read_reg = 0
 try:
-    import _winreg
+    import winreg
 
     can_read_reg = 1
-    hkey_mod = _winreg
+    hkey_mod = winreg
 
-    RegOpenKeyEx    = _winreg.OpenKeyEx
-    RegEnumKey      = _winreg.EnumKey
-    RegEnumValue    = _winreg.EnumValue
-    RegQueryValueEx = _winreg.QueryValueEx
-    RegError        = _winreg.error
+    RegOpenKeyEx    = winreg.OpenKeyEx
+    RegEnumKey      = winreg.EnumKey
+    RegEnumValue    = winreg.EnumValue
+    RegQueryValueEx = winreg.QueryValueEx
+    RegError        = winreg.error
 
 except ImportError:
     try:
@@ -741,8 +617,8 @@ else:
         # OSError subclass on Windows.)
         class WindowsError(OSError):
             pass
-        import __builtin__
-        __builtin__.WindowsError = WindowsError
+        import builtins
+        builtins.WindowsError = WindowsError
     else:
         del e
         
@@ -766,16 +642,16 @@ if sys.platform == 'win32':
             except KeyError:
                 return None
         if is_String(path):
-            path = string.split(path, os.pathsep)
+            path = path.split(os.pathsep)
         if pathext is None:
             try:
                 pathext = os.environ['PATHEXT']
             except KeyError:
                 pathext = '.COM;.EXE;.BAT;.CMD'
         if is_String(pathext):
-            pathext = string.split(pathext, os.pathsep)
+            pathext = pathext.split(os.pathsep)
         for ext in pathext:
-            if string.lower(ext) == string.lower(file[-len(ext):]):
+            if ext.lower() == file[-len(ext):].lower():
                 pathext = ['']
                 break
         if not is_List(reject) and not is_Tuple(reject):
@@ -801,11 +677,11 @@ elif os.name == 'os2':
             except KeyError:
                 return None
         if is_String(path):
-            path = string.split(path, os.pathsep)
+            path = path.split(os.pathsep)
         if pathext is None:
             pathext = ['.exe', '.cmd']
         for ext in pathext:
-            if string.lower(ext) == string.lower(file[-len(ext):]):
+            if ext.lower() == file[-len(ext):].lower():
                 pathext = ['']
                 break
         if not is_List(reject) and not is_Tuple(reject):
@@ -832,7 +708,7 @@ else:
             except KeyError:
                 return None
         if is_String(path):
-            path = string.split(path, os.pathsep)
+            path = path.split(os.pathsep)
         if not is_List(reject) and not is_Tuple(reject):
             reject = [reject]
         for d in path:
@@ -881,18 +757,18 @@ def PrependPath(oldpath, newpath, sep = os.pathsep,
     is_list = 1
     paths = orig
     if not is_List(orig) and not is_Tuple(orig):
-        paths = string.split(paths, sep)
+        paths = paths.split(sep)
         is_list = 0
 
     if is_String(newpath):
-        newpaths = string.split(newpath, sep)
+        newpaths = newpath.split(sep)
     elif not is_List(newpath) and not is_Tuple(newpath):
         newpaths = [ newpath ]  # might be a Dir
     else:
         newpaths = newpath
 
     if canonicalize:
-        newpaths=map(canonicalize, newpaths)
+        newpaths=list(map(canonicalize, newpaths))
 
     if not delete_existing:
         # First uniquify the old paths, making sure to 
@@ -934,7 +810,7 @@ def PrependPath(oldpath, newpath, sep = os.pathsep,
     if is_list:
         return paths
     else:
-        return string.join(paths, sep)
+        return sep.join(paths)
 
 def AppendPath(oldpath, newpath, sep = os.pathsep, 
                delete_existing=1, canonicalize=None):
@@ -962,18 +838,18 @@ def AppendPath(oldpath, newpath, sep = os.pathsep,
     is_list = 1
     paths = orig
     if not is_List(orig) and not is_Tuple(orig):
-        paths = string.split(paths, sep)
+        paths = paths.split(sep)
         is_list = 0
 
     if is_String(newpath):
-        newpaths = string.split(newpath, sep)
+        newpaths = newpath.split(sep)
     elif not is_List(newpath) and not is_Tuple(newpath):
         newpaths = [ newpath ]  # might be a Dir
     else:
         newpaths = newpath
 
     if canonicalize:
-        newpaths=map(canonicalize, newpaths)
+        newpaths=list(map(canonicalize, newpaths))
 
     if not delete_existing:
         # add old paths to result, then
@@ -1015,13 +891,13 @@ def AppendPath(oldpath, newpath, sep = os.pathsep,
     if is_list:
         return paths
     else:
-        return string.join(paths, sep)
+        return sep.join(paths)
 
 if sys.platform == 'cygwin':
     def get_native_path(path):
         """Transforms an absolute path into a native path for the system.  In
         Cygwin, this converts from a Cygwin path to a Windows one."""
-        return string.replace(os.popen('cygpath -w ' + path).read(), '\n', '')
+        return os.popen('cygpath -w ' + path).read().replace('\n', '')
 else:
     def get_native_path(path):
         """Transforms an absolute path into a native path for the system.
@@ -1034,7 +910,7 @@ def Split(arg):
     if is_List(arg) or is_Tuple(arg):
         return arg
     elif is_String(arg):
-        return string.split(arg)
+        return arg.split()
     else:
         return [arg]
 
@@ -1057,7 +933,7 @@ class CLVar(UserList):
     def __coerce__(self, other):
         return (self, CLVar(other))
     def __str__(self):
-        return string.join(self.data)
+        return ' '.join(self.data)
 
 # A dictionary that preserves the order in which items are added.
 # Submitted by David Benjamin to ActiveState's Python Cookbook web site:
@@ -1086,7 +962,7 @@ class OrderedDict(UserDict):
         return dict
 
     def items(self):
-        return zip(self._keys, self.values())
+        return list(zip(self._keys, list(self.values())))
 
     def keys(self):
         return self._keys[:]
@@ -1111,7 +987,7 @@ class OrderedDict(UserDict):
             self.__setitem__(key, val)
 
     def values(self):
-        return map(self.get, self._keys)
+        return list(map(self.get, self._keys))
 
 class Selector(OrderedDict):
     """A callable ordered dictionary that maps file suffixes to
@@ -1132,12 +1008,12 @@ class Selector(OrderedDict):
             for (k,v) in self.items():
                 if k is not None:
                     s_k = env.subst(k)
-                    if s_dict.has_key(s_k):
+                    if s_k in s_dict:
                         # We only raise an error when variables point
                         # to the same suffix.  If one suffix is literal
                         # and a variable suffix contains this literal,
                         # the literal wins and we don't raise an error.
-                        raise KeyError, (s_dict[s_k][0], k, s_k)
+                        raise KeyError(s_dict[s_k][0], k, s_k)
                     s_dict[s_k] = (k,v)
             try:
                 return s_dict[ext][1]
@@ -1213,7 +1089,7 @@ def unique(s):
     except TypeError:
         pass    # move on to the next method
     else:
-        return u.keys()
+        return list(u.keys())
     del u
 
     # We can't hash all the elements.  Second fastest is to sort,
@@ -1224,8 +1100,7 @@ def unique(s):
     # sort functions in all languages or libraries, so this approach
     # is more effective in Python than it may be elsewhere.
     try:
-        t = list(s)
-        t.sort()
+        t = sorted(s)
     except TypeError:
         pass    # move on to the next method
     else:
@@ -1279,7 +1154,7 @@ def uniquer_hashables(seq):
     result = []
     for item in seq:
         #if not item in seen:
-        if not seen.has_key(item):
+        if item not in seen:
             seen[item] = 1
             result.append(item)
     return result
@@ -1288,14 +1163,14 @@ def uniquer_hashables(seq):
 
 # Much of the logic here was originally based on recipe 4.9 from the
 # Python CookBook, but we had to dumb it way down for Python 1.5.2.
-class LogicalLines:
+class LogicalLines(object):
 
     def __init__(self, fileobj):
         self.fileobj = fileobj
 
     def readline(self):
         result = []
-        while 1:
+        while True:
             line = self.fileobj.readline()
             if not line:
                 break
@@ -1304,11 +1179,11 @@ class LogicalLines:
             else:
                 result.append(line)
                 break
-        return string.join(result, '')
+        return ''.join(result)
 
     def readlines(self):
         result = []
-        while 1:
+        while True:
             line = self.readline()
             if not line:
                 break
@@ -1402,21 +1277,20 @@ class UniqueList(UserList):
         UserList.reverse(self)
     def sort(self, *args, **kwds):
         self.__make_unique()
-        #return UserList.sort(self, *args, **kwds)
-        return apply(UserList.sort, (self,)+args, kwds)
+        return UserList.sort(self, *args, **kwds)
     def extend(self, other):
         UserList.extend(self, other)
         self.unique = False
 
 
-
-class Unbuffered:
+class Unbuffered(object):
     """
     A proxy class that wraps a file object, flushing after every write,
     and delegating everything else to the wrapped object.
     """
     def __init__(self, file):
         self.file = file
+        self.softspace = 0  ## backward compatibility; not supported in Py3k
     def write(self, arg):
         try:
             self.file.write(arg)
@@ -1474,7 +1348,7 @@ def make_path_relative(path):
 #	ASPN: Python Cookbook : Dynamically added methods to a class
 #	http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/81732
 
-def AddMethod(object, function, name = None):
+def AddMethod(obj, function, name=None):
     """
     Adds either a bound method to an instance or an unbound method to
     a class. If name is ommited the name of the specified function
@@ -1489,40 +1363,27 @@ def AddMethod(object, function, name = None):
       AddMethod(lambda self, i: self.l[i], a, "listIndex")
       print a.listIndex(5)
     """
-    import new
-
     if name is None:
         name = function.func_name
     else:
         function = RenameFunction(function, name)
 
-    try:
-        klass = object.__class__
-    except AttributeError:
-        # "object" is really a class, so it gets an unbound method.
-        object.__dict__[name] = new.instancemethod(function, None, object)
+    if hasattr(obj, '__class__') and obj.__class__ is not type:
+        # "obj" is an instance, so it gets a bound method.
+        setattr(obj, name, MethodType(function, obj, obj.__class__))
     else:
-        # "object" is really an instance, so it gets a bound method.
-        object.__dict__[name] = new.instancemethod(function, object, klass)
+        # "obj" is a class, so it gets an unbound method.
+        setattr(obj, name, MethodType(function, None, obj))
 
 def RenameFunction(function, name):
     """
     Returns a function identical to the specified function, but with
     the specified name.
     """
-    import new
-
-    # Compatibility for Python 1.5 and 2.1.  Can be removed in favor of
-    # passing function.func_defaults directly to new.function() once
-    # we base on Python 2.2 or later.
-    func_defaults = function.func_defaults
-    if func_defaults is None:
-        func_defaults = ()
-
-    return new.function(function.func_code,
+    return FunctionType(function.func_code,
                         function.func_globals,
                         name,
-                        func_defaults)
+                        function.func_defaults)
 
 
 md5 = False
@@ -1550,7 +1411,7 @@ else:
         def MD5filesignature(fname, chunksize=65536):
             m = hashlib.md5()
             f = open(fname, "rb")
-            while 1:
+            while True:
                 blck = f.read(chunksize)
                 if not blck:
                     break
@@ -1568,26 +1429,18 @@ def MD5collect(signatures):
     if len(signatures) == 1:
         return signatures[0]
     else:
-        return MD5signature(string.join(signatures, ', '))
+        return MD5signature(', '.join(signatures))
 
 
 
-# Wrap the intern() function so it doesn't throw exceptions if ineligible
-# arguments are passed. The intern() function was moved into the sys module in
-# Python 3.
-try:
-    intern
-except NameError:
-    from sys import intern
-
 def silent_intern(x):
     """
-    Perform intern() on the passed argument and return the result.
+    Perform sys.intern() on the passed argument and return the result.
     If the input is ineligible (e.g. a unicode string) the original argument is
     returned and no exception is thrown.
     """
     try:
-        return intern(x)
+        return sys.intern(x)
     except TypeError:
         return x
 
@@ -1599,15 +1452,13 @@ def silent_intern(x):
 # http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/68205
 # ASPN: Python Cookbook: Null Object Design Pattern
 
-# TODO(1.5):
-#class Null(object):
-class Null:
+#TODO??? class Null(object):
+class Null(object):
     """ Null objects always and reliably "do nothing." """
     def __new__(cls, *args, **kwargs):
-        if not '_inst' in vars(cls):
-            #cls._inst = type.__new__(cls, *args, **kwargs)
-            cls._inst = apply(type.__new__, (cls,) + args, kwargs)
-        return cls._inst
+        if not '_instance' in vars(cls):
+            cls._instance = super(Null, cls).__new__(cls, *args, **kwargs)
+        return cls._instance
     def __init__(self, *args, **kwargs):
         pass
     def __call__(self, *args, **kwargs):
diff --git a/engine/SCons/Variables/BoolVariable.py b/engine/SCons/Variables/BoolVariable.py
index c002fb9..2eeda77 100644
--- a/engine/SCons/Variables/BoolVariable.py
+++ b/engine/SCons/Variables/BoolVariable.py
@@ -34,12 +34,10 @@ Usage example:
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Variables/BoolVariable.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Variables/BoolVariable.py 5023 2010/06/14 22:05:46 scons"
 
 __all__ = ['BoolVariable',]
 
-import string
-
 import SCons.Errors
 
 __true_strings  = ('y', 'yes', 'true', 't', '1', 'on' , 'all' )
@@ -57,7 +55,7 @@ def _text2bool(val):
 
     This is usable as 'converter' for SCons' Variables.
     """
-    lval = string.lower(val)
+    lval = val.lower()
     if lval in __true_strings: return True
     if lval in __false_strings: return False
     raise ValueError("Invalid value for boolean option: %s" % val)
diff --git a/engine/SCons/Variables/EnumVariable.py b/engine/SCons/Variables/EnumVariable.py
index 2051bf1..9ae93fb 100644
--- a/engine/SCons/Variables/EnumVariable.py
+++ b/engine/SCons/Variables/EnumVariable.py
@@ -37,11 +37,10 @@ Usage example:
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Variables/EnumVariable.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Variables/EnumVariable.py 5023 2010/06/14 22:05:46 scons"
 
 __all__ = ['EnumVariable',]
 
-import string
 
 import SCons.Errors
 
@@ -80,24 +79,21 @@ def EnumVariable(key, help, default, allowed_values, map={}, ignorecase=0):
     given 'map'-dictionary (unmapped input values are returned
     unchanged). 
     """
-    help = '%s (%s)' % (help, string.join(allowed_values, '|'))
+    help = '%s (%s)' % (help, '|'.join(allowed_values))
     # define validator
     if ignorecase >= 1:
-        validator = lambda key, val, env, vals=allowed_values: \
-                    _validator(key, string.lower(val), env, vals)
+        validator = lambda key, val, env: \
+                    _validator(key, val.lower(), env, allowed_values)
     else:
-        validator = lambda key, val, env, vals=allowed_values: \
-                    _validator(key, val, env, vals)
+        validator = lambda key, val, env: \
+                    _validator(key, val, env, allowed_values)
     # define converter
     if ignorecase == 2:
-        converter = lambda val, map=map: \
-                    string.lower(map.get(string.lower(val), val))
+        converter = lambda val: map.get(val.lower(), val).lower()
     elif ignorecase == 1:
-        converter = lambda val, map=map: \
-                    map.get(string.lower(val), val)
+        converter = lambda val: map.get(val.lower(), val)
     else:
-        converter = lambda val, map=map: \
-                    map.get(val, val)
+        converter = lambda val: map.get(val, val)
     return (key, help, default, validator, converter)
 
 # Local Variables:
diff --git a/engine/SCons/Variables/ListVariable.py b/engine/SCons/Variables/ListVariable.py
index 3ed755f..dbd5f4b 100644
--- a/engine/SCons/Variables/ListVariable.py
+++ b/engine/SCons/Variables/ListVariable.py
@@ -45,26 +45,23 @@ Usage example:
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Variables/ListVariable.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Variables/ListVariable.py 5023 2010/06/14 22:05:46 scons"
 
 # Know Bug: This should behave like a Set-Type, but does not really,
 # since elements can occur twice.
 
 __all__ = ['ListVariable',]
 
-import string
-import UserList
+import collections
 
 import SCons.Util
 
 
-class _ListVariable(UserList.UserList):
+class _ListVariable(collections.UserList):
     def __init__(self, initlist=[], allowedElems=[]):
-        UserList.UserList.__init__(self, filter(None, initlist))
-        self.allowedElems = allowedElems[:]
-        self.allowedElems.sort()
+        collections.UserList.__init__(self, [_f for _f in initlist if _f])
+        self.allowedElems = sorted(allowedElems)
 
     def __cmp__(self, other):
         raise NotImplementedError
@@ -85,7 +82,7 @@ class _ListVariable(UserList.UserList):
         if self.data == self.allowedElems:
             return 'all'
         else:
-            return string.join(self, ',')
+            return ','.join(self)
     def prepare_to_store(self):
         return self.__str__()
 
@@ -97,12 +94,12 @@ def _converter(val, allowedElems, mapdict):
     elif val == 'all':
         val = allowedElems
     else:
-        val = filter(None, string.split(val, ','))
-        val = map(lambda v, m=mapdict: m.get(v, v), val)
-        notAllowed = filter(lambda v, aE=allowedElems: not v in aE, val)
+        val = [_f for _f in val.split(',') if _f]
+        val = [mapdict.get(v, v) for v in val]
+        notAllowed = [v for v in val if not v in allowedElems]
         if notAllowed:
             raise ValueError("Invalid value(s) for option: %s" %
-                             string.join(notAllowed, ','))
+                             ','.join(notAllowed))
     return _ListVariable(val, allowedElems)
 
 
@@ -122,15 +119,14 @@ def ListVariable(key, help, default, names, map={}):
     A 'package list' option may either be 'all', 'none' or a list of
     package names (separated by space).
     """
-    names_str = 'allowed names: %s' % string.join(names, ' ')
+    names_str = 'allowed names: %s' % ' '.join(names)
     if SCons.Util.is_List(default):
-        default = string.join(default, ',')
-    help = string.join(
-        (help, '(all|none|comma-separated list of names)', names_str),
-        '\n    ')
+        default = ','.join(default)
+    help = '\n    '.join(
+        (help, '(all|none|comma-separated list of names)', names_str))
     return (key, help, default,
             None, #_validator,
-            lambda val, elems=names, m=map: _converter(val, elems, m))
+            lambda val: _converter(val, names, map))
 
 # Local Variables:
 # tab-width:4
diff --git a/engine/SCons/Variables/PackageVariable.py b/engine/SCons/Variables/PackageVariable.py
index 362f67e..d9ce2a6 100644
--- a/engine/SCons/Variables/PackageVariable.py
+++ b/engine/SCons/Variables/PackageVariable.py
@@ -50,12 +50,10 @@ Usage example:
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Variables/PackageVariable.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Variables/PackageVariable.py 5023 2010/06/14 22:05:46 scons"
 
 __all__ = ['PackageVariable',]
 
-import string
-
 import SCons.Errors
 
 __enable_strings  = ('1', 'yes', 'true',  'on', 'enable', 'search')
@@ -64,7 +62,7 @@ __disable_strings = ('0', 'no',  'false', 'off', 'disable')
 def _converter(val):
     """
     """
-    lval = string.lower(val)
+    lval = val.lower()
     if lval in __enable_strings: return True
     if lval in __disable_strings: return False
     #raise ValueError("Invalid value for boolean option: %s" % val)
@@ -95,11 +93,10 @@ def PackageVariable(key, help, default, searchfunc=None):
     A 'package list' option may either be 'all', 'none' or a list of
     package names (seperated by space).
     """
-    help = string.join(
-        (help, '( yes | no | /path/to/%s )' % key),
-        '\n    ')
+    help = '\n    '.join(
+        (help, '( yes | no | /path/to/%s )' % key))
     return (key, help, default,
-            lambda k, v, e, f=searchfunc: _validator(k,v,e,f),
+            lambda k, v, e: _validator(k,v,e,searchfunc),
             _converter)
 
 # Local Variables:
diff --git a/engine/SCons/Variables/PathVariable.py b/engine/SCons/Variables/PathVariable.py
index 4af9fc3..445cfe2 100644
--- a/engine/SCons/Variables/PathVariable.py
+++ b/engine/SCons/Variables/PathVariable.py
@@ -68,7 +68,7 @@ Usage example:
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Variables/PathVariable.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Variables/PathVariable.py 5023 2010/06/14 22:05:46 scons"
 
 __all__ = ['PathVariable',]
 
@@ -77,7 +77,7 @@ import os.path
 
 import SCons.Errors
 
-class _PathVariableClass:
+class _PathVariableClass(object):
 
     def PathAccept(self, key, val, env):
         """Accepts any path, no checking done."""
diff --git a/engine/SCons/Variables/__init__.py b/engine/SCons/Variables/__init__.py
index 8840b97..d8562b0 100644
--- a/engine/SCons/Variables/__init__.py
+++ b/engine/SCons/Variables/__init__.py
@@ -25,12 +25,10 @@ customizable variables to an SCons build.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
 
-__revision__ = "src/engine/SCons/Variables/__init__.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Variables/__init__.py 5023 2010/06/14 22:05:46 scons"
 
 import os.path
-import string
 import sys
 
 import SCons.Environment
@@ -45,7 +43,7 @@ from PackageVariable import PackageVariable # naja
 from PathVariable import PathVariable # okay
 
 
-class Variables:
+class Variables(object):
     instance=None
 
     """
@@ -76,7 +74,7 @@ class Variables:
                 Variables.instance=self
 
     def _do_add(self, key, help="", default=None, validator=None, converter=None):
-        class Variable:
+        class Variable(object):
             pass
 
         option = Variable()
@@ -84,11 +82,11 @@ class Variables:
         # if we get a list or a tuple, we take the first element as the
         # option key and store the remaining in aliases.
         if SCons.Util.is_List(key) or SCons.Util.is_Tuple(key):
-          option.key     = key[0]
-          option.aliases = key[1:]
+            option.key     = key[0]
+            option.aliases = key[1:]
         else:
-          option.key     = key
-          option.aliases = [ key ]
+            option.key     = key
+            option.aliases = [ key ]
         option.help = help
         option.default = default
         option.validator = validator
@@ -99,16 +97,14 @@ class Variables:
         # options might be added after the 'unknown' dict has been set up,
         # so we remove the key and all its aliases from that dict
         for alias in list(option.aliases) + [ option.key ]:
-          # TODO(1.5)
-          #if alias in self.unknown:
-          if alias in self.unknown.keys():
-            del self.unknown[alias]
+            if alias in self.unknown:
+                del self.unknown[alias]
 
     def keys(self):
         """
         Returns the keywords for the options
         """
-        return map(lambda o: o.key, self.options)
+        return [o.key for o in self.options]
 
     def Add(self, key, help="", default=None, validator=None, converter=None, **kw):
         """
@@ -123,13 +119,13 @@ class Variables:
                     putting it in the environment.
         """
 
-        if SCons.Util.is_List(key) or type(key) == type(()):
-            apply(self._do_add, key)
+        if SCons.Util.is_List(key) or isinstance(key, tuple):
+            self._do_add(*key)
             return
 
         if not SCons.Util.is_String(key) or \
-           not SCons.Environment.is_valid_construction_var(key):
-            raise SCons.Errors.UserError, "Illegal Variables.Add() key `%s'" % str(key)
+            not SCons.Environment.is_valid_construction_var(key):
+                raise SCons.Errors.UserError("Illegal Variables.Add() key `%s'" % str(key))
 
         self._do_add(key, help, default, validator, converter)
 
@@ -149,7 +145,7 @@ class Variables:
             )
         """
         for o in optlist:
-            apply(self._do_add, o)
+            self._do_add(*o)
 
 
     def Update(self, env, args=None):
@@ -203,7 +199,7 @@ class Variables:
 
         # Call the convert functions:
         for option in self.options:
-            if option.converter and values.has_key(option.key):
+            if option.converter and option.key in values:
                 value = env.subst('${%s}'%option.key)
                 try:
                     try:
@@ -211,12 +207,12 @@ class Variables:
                     except TypeError:
                         env[option.key] = option.converter(value, env)
                 except ValueError, x:
-                    raise SCons.Errors.UserError, 'Error converting option: %s\n%s'%(option.key, x)
+                    raise SCons.Errors.UserError('Error converting option: %s\n%s'%(option.key, x))
 
 
         # Finally validate the values:
         for option in self.options:
-            if option.validator and values.has_key(option.key):
+            if option.validator and option.key in values:
                 option.validator(option.key, env.subst('${%s}'%option.key), env)
 
     def UnknownVariables(self):
@@ -273,7 +269,7 @@ class Variables:
                 fh.close()
 
         except IOError, x:
-            raise SCons.Errors.UserError, 'Error writing options to file: %s\n%s' % (filename, x)
+            raise SCons.Errors.UserError('Error writing options to file: %s\n%s' % (filename, x))
 
     def GenerateHelpText(self, env, sort=None):
         """
@@ -284,27 +280,26 @@ class Variables:
         """
 
         if sort:
-            options = self.options[:]
-            options.sort(lambda x,y,func=sort: func(x.key,y.key))
+            options = sorted(self.options, key=lambda x: x.key)
         else:
             options = self.options
 
         def format(opt, self=self, env=env):
-            if env.has_key(opt.key):
+            if opt.key in env:
                 actual = env.subst('${%s}' % opt.key)
             else:
                 actual = None
             return self.FormatVariableHelpText(env, opt.key, opt.help, opt.default, actual, opt.aliases)
-        lines = filter(None, map(format, options))
+        lines = [_f for _f in map(format, options) if _f]
 
-        return string.join(lines, '')
+        return ''.join(lines)
 
     format  = '\n%s: %s\n    default: %s\n    actual: %s\n'
     format_ = '\n%s: %s\n    default: %s\n    actual: %s\n    aliases: %s\n'
 
     def FormatVariableHelpText(self, env, key, help, default, actual, aliases=[]):
         # Don't display the key name itself as an alias.
-        aliases = filter(lambda a, k=key: a != k, aliases)
+        aliases = [a for a in aliases if a != key]
         if len(aliases)==0:
             return self.format % (key, help, default, actual)
         else:
diff --git a/engine/SCons/Warnings.py b/engine/SCons/Warnings.py
index 9f072bf..aa6074c 100644
--- a/engine/SCons/Warnings.py
+++ b/engine/SCons/Warnings.py
@@ -27,9 +27,8 @@ This file implements the warnings framework for SCons.
 
 """
 
-__revision__ = "src/engine/SCons/Warnings.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/Warnings.py 5023 2010/06/14 22:05:46 scons"
 
-import string
 import sys
 
 import SCons.Errors
@@ -37,104 +36,124 @@ import SCons.Errors
 class Warning(SCons.Errors.UserError):
     pass
 
-class MandatoryWarning(Warning):
+class WarningOnByDefault(Warning):
     pass
 
 
+# NOTE:  If you add a new warning class, add it to the man page, too!
 
-class FutureDeprecatedWarning(Warning):
+class CacheWriteErrorWarning(Warning):
     pass
 
-class DeprecatedWarning(Warning):
+class CorruptSConsignWarning(WarningOnByDefault):
     pass
 
-class MandatoryDeprecatedWarning(MandatoryWarning):
+class DependencyWarning(Warning):
     pass
 
+class DuplicateEnvironmentWarning(WarningOnByDefault):
+    pass
 
+class FutureReservedVariableWarning(WarningOnByDefault):
+    pass
 
-# NOTE:  If you add a new warning class, add it to the man page, too!
-
-class CacheWriteErrorWarning(Warning):
+class LinkWarning(WarningOnByDefault):
     pass
 
-class CorruptSConsignWarning(Warning):
+class MisleadingKeywordsWarning(WarningOnByDefault):
     pass
 
-class DependencyWarning(Warning):
+class MissingSConscriptWarning(WarningOnByDefault):
     pass
 
-class DeprecatedCopyWarning(DeprecatedWarning):
+class NoMD5ModuleWarning(WarningOnByDefault):
     pass
 
-class DeprecatedOptionsWarning(DeprecatedWarning):
+class NoMetaclassSupportWarning(WarningOnByDefault):
     pass
 
-class DeprecatedSourceSignaturesWarning(DeprecatedWarning):
+class NoObjectCountWarning(WarningOnByDefault):
     pass
 
-class DeprecatedTargetSignaturesWarning(DeprecatedWarning):
+class NoParallelSupportWarning(WarningOnByDefault):
     pass
 
-class DuplicateEnvironmentWarning(Warning):
+class ReservedVariableWarning(WarningOnByDefault):
     pass
 
-class FutureReservedVariableWarning(Warning):
+class StackSizeWarning(WarningOnByDefault):
     pass
 
-class LinkWarning(Warning):
+class VisualCMissingWarning(WarningOnByDefault):
     pass
 
-class MisleadingKeywordsWarning(Warning):
+# Used when MSVC_VERSION and MSVS_VERSION do not point to the
+# same version (MSVS_VERSION is deprecated)
+class VisualVersionMismatch(WarningOnByDefault):
     pass
 
-class MissingSConscriptWarning(Warning):
+class VisualStudioMissingWarning(Warning):
     pass
 
-class NoMD5ModuleWarning(Warning):
+class FortranCxxMixWarning(LinkWarning):
     pass
 
-class NoMetaclassSupportWarning(Warning):
+
+# Deprecation warnings
+
+class FutureDeprecatedWarning(Warning):
     pass
 
-class NoObjectCountWarning(Warning):
+class DeprecatedWarning(Warning):
     pass
 
-class NoParallelSupportWarning(Warning):
+class MandatoryDeprecatedWarning(DeprecatedWarning):
     pass
 
+
+# Special case; base always stays DeprecatedWarning
 class PythonVersionWarning(DeprecatedWarning):
     pass
 
-class ReservedVariableWarning(Warning):
+class DeprecatedSourceCodeWarning(FutureDeprecatedWarning):
     pass
 
-class StackSizeWarning(Warning):
+class DeprecatedBuildDirWarning(DeprecatedWarning):
     pass
 
-class TaskmasterNeedsExecuteWarning(FutureDeprecatedWarning):
+class TaskmasterNeedsExecuteWarning(DeprecatedWarning):
     pass
 
-class VisualCMissingWarning(Warning):
+class DeprecatedCopyWarning(MandatoryDeprecatedWarning):
     pass
 
-# Used when MSVC_VERSION and MSVS_VERSION do not point to the
-# same version (MSVS_VERSION is deprecated)
-class VisualVersionMismatch(Warning):
+class DeprecatedOptionsWarning(MandatoryDeprecatedWarning):
     pass
 
-class VisualStudioMissingWarning(Warning):
+class DeprecatedSourceSignaturesWarning(MandatoryDeprecatedWarning):
     pass
 
-class FortranCxxMixWarning(LinkWarning):
+class DeprecatedTargetSignaturesWarning(MandatoryDeprecatedWarning):
+    pass
+
+class DeprecatedDebugOptionsWarning(MandatoryDeprecatedWarning):
+    pass
+
+class DeprecatedSigModuleWarning(MandatoryDeprecatedWarning):
+    pass
+
+class DeprecatedBuilderKeywordsWarning(MandatoryDeprecatedWarning):
     pass
 
-_warningAsException = 0
 
 # The below is a list of 2-tuples.  The first element is a class object.
 # The second element is true if that class is enabled, false if it is disabled.
 _enabled = []
 
+# If set, raise the warning as an exception
+_warningAsException = 0
+
+# If not None, a function to call with the warning
 _warningOut = None
 
 def suppressWarningClass(clazz):
@@ -143,7 +162,7 @@ def suppressWarningClass(clazz):
     _enabled.insert(0, (clazz, 0))
 
 def enableWarningClass(clazz):
-    """Suppresses all warnings that are of type clazz or
+    """Enables all warnings that are of type clazz or
     derived from clazz."""
     _enabled.insert(0, (clazz, 1))
 
@@ -182,8 +201,7 @@ def process_warn_strings(arguments):
     "Warning" is appended to get the class name.
 
     For example, 'deprecated' will enable the DeprecatedWarning
-    class.  'no-dependency' will disable the .DependencyWarning
-    class.
+    class.  'no-dependency' will disable the DependencyWarning class.
 
     As a special case, --warn=all and --warn=no-all will enable or
     disable (respectively) the base Warning class of all warnings.
@@ -194,11 +212,11 @@ def process_warn_strings(arguments):
         if s[:5] == "scons":
             return "SCons" + s[5:]
         else:
-            return string.capitalize(s)
+            return s.capitalize()
 
     for arg in arguments:
 
-        elems = string.split(string.lower(arg), '-')
+        elems = arg.lower().split('-')
         enable = 1
         if elems[0] == 'no':
             enable = 0
@@ -207,7 +225,7 @@ def process_warn_strings(arguments):
         if len(elems) == 1 and elems[0] == 'all':
             class_name = "Warning"
         else:
-            class_name = string.join(map(_capitalize, elems), '') + "Warning"
+            class_name = ''.join(map(_capitalize, elems)) + "Warning"
         try:
             clazz = globals()[class_name]
         except KeyError:
diff --git a/engine/SCons/__init__.py b/engine/SCons/__init__.py
index 5abe730..5ffbf8a 100644
--- a/engine/SCons/__init__.py
+++ b/engine/SCons/__init__.py
@@ -27,17 +27,17 @@ The main package for the SCons software construction utility.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/__init__.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/__init__.py 5023 2010/06/14 22:05:46 scons"
 
-__version__ = "1.3.0"
+__version__ = "2.0.0.final.0"
 
-__build__ = "r4720"
+__build__ = "r5023"
 
-__buildsys__ = "jars-desktop"
+__buildsys__ = "scons-dev"
 
-__date__ = "2010/03/24 03:14:11"
+__date__ = "2010/06/14 22:05:46"
 
-__developer__ = "jars"
+__developer__ = "scons"
 
 # make sure compatibility is always in place
 import SCons.compat
diff --git a/engine/SCons/compat/__init__.py b/engine/SCons/compat/__init__.py
index 165dddf..cba69ef 100644
--- a/engine/SCons/compat/__init__.py
+++ b/engine/SCons/compat/__init__.py
@@ -31,12 +31,12 @@ we still support.
 
 Other code will not generally reference things in this package through
 the SCons.compat namespace.  The modules included here add things to
-the __builtin__ namespace or the global module list so that the rest
+the builtins namespace or the global module list so that the rest
 of our code can use the objects and names imported here regardless of
 Python version.
 
-Simply enough, things that go in the __builtin__ name space come from
-our builtins module.
+Simply enough, things that go in the builtins name space come from
+our _scons_builtins module.
 
 The rest of the things here will be in individual compatibility modules
 that are either: 1) suitably modified copies of the future modules that
@@ -60,20 +60,35 @@ function defined below loads the module as the "real" name (without the
 rest of our code will find our pre-loaded compatibility module.
 """
 
-__revision__ = "src/engine/SCons/compat/__init__.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/compat/__init__.py 5023 2010/06/14 22:05:46 scons"
+
+import os
+import sys
+import imp   # Use the "imp" module to protect imports from fixers.
 
 def import_as(module, name):
     """
     Imports the specified module (from our local directory) as the
-    specified name.
+    specified name, returning the loaded module object.
     """
-    import imp
-    import os.path
     dir = os.path.split(__file__)[0]
-    file, filename, suffix_mode_type = imp.find_module(module, [dir])
-    imp.load_module(name, file, filename, suffix_mode_type)
+    return imp.load_module(name, *imp.find_module(module, [dir]))
+
+def rename_module(new, old):
+    """
+    Attempts to import the old module and load it under the new name.
+    Used for purely cosmetic name changes in Python 3.x.
+    """
+    try:
+        sys.modules[new] = imp.load_module(old, *imp.find_module(old))
+        return True
+    except ImportError:
+        return False
+
+
+rename_module('builtins', '__builtin__')
+import _scons_builtins
 
-import builtins
 
 try:
     import hashlib
@@ -92,75 +107,48 @@ try:
     set
 except NameError:
     # Pre-2.4 Python has no native set type
-    try:
-        # Python 2.2 and 2.3 can use the copy of the 2.[45] sets module
-        # that we grabbed.
-        import_as('_scons_sets', 'sets')
-    except (ImportError, SyntaxError):
-        # Python 1.5 (ImportError, no __future_ module) and 2.1
-        # (SyntaxError, no generators in __future__) will blow up
-        # trying to import the 2.[45] sets module, so back off to a
-        # custom sets module that can be discarded easily when we
-        # stop supporting those versions.
-        import_as('_scons_sets15', 'sets')
-    import __builtin__
-    import sets
-    __builtin__.set = sets.Set
-
-import fnmatch
-try:
-    fnmatch.filter
-except AttributeError:
-    # Pre-2.2 Python has no fnmatch.filter() function.
-    def filter(names, pat):
-        """Return the subset of the list NAMES that match PAT"""
-        import os,posixpath
-        result=[]
-        pat = os.path.normcase(pat)
-        if not fnmatch._cache.has_key(pat):
-            import re
-            res = fnmatch.translate(pat)
-            fnmatch._cache[pat] = re.compile(res)
-        match = fnmatch._cache[pat].match
-        if os.path is posixpath:
-            # normcase on posix is NOP. Optimize it away from the loop.
-            for name in names:
-                if match(name):
-                    result.append(name)
-        else:
-            for name in names:
-                if match(os.path.normcase(name)):
-                    result.append(name)
-        return result
-    fnmatch.filter = filter
-    del filter
+    import_as('_scons_sets', 'sets')
+    import builtins, sets
+    builtins.set = sets.Set
 
-try:
-    import itertools
-except ImportError:
-    # Pre-2.3 Python has no itertools module.
-    import_as('_scons_itertools', 'itertools')
 
-# If we need the compatibility version of textwrap, it  must be imported
-# before optparse, which uses it.
 try:
-    import textwrap
+    import collections
 except ImportError:
-    # Pre-2.3 Python has no textwrap module.
-    import_as('_scons_textwrap', 'textwrap')
+    # Pre-2.4 Python has no collections module.
+    import_as('_scons_collections', 'collections')
+else:
+    try:
+        collections.UserDict
+    except AttributeError:
+        exec('from UserDict import UserDict as _UserDict')
+        collections.UserDict = _UserDict
+        del _UserDict
+    try:
+        collections.UserList
+    except AttributeError:
+        exec('from UserList import UserList as _UserList')
+        collections.UserList = _UserList
+        del _UserList
+    try:
+        collections.UserString
+    except AttributeError:
+        exec('from UserString import UserString as _UserString')
+        collections.UserString = _UserString
+        del _UserString
+
 
 try:
-    import optparse
+    import io
 except ImportError:
-    # Pre-2.3 Python has no optparse module.
-    import_as('_scons_optparse', 'optparse')
+    # Pre-2.6 Python has no io module.
+    import_as('_scons_io', 'io')
+
 
-import os
 try:
     os.devnull
 except AttributeError:
     # Pre-2.4 Python has no os.devnull attribute
-    import sys
     _names = sys.builtin_module_names
     if 'posix' in _names:
         os.devnull = '/dev/null'
@@ -176,64 +164,25 @@ except AttributeError:
     os.path.lexists = lexists
 
 
-try:
-    import platform
-except ImportError:
-    # Pre-2.3 Python has no platform module.
-    import_as('_scons_platform', 'platform')
+# When we're using the '-3' option during regression tests, importing
+# cPickle gives a warning no matter how it's done, so always use the
+# real profile module, whether it's fast or not.
+if os.environ.get('SCONS_HORRIBLE_REGRESSION_TEST_HACK') is None:
+    # Not a regression test with '-3', so try to use faster version.
+    # In 3.x, 'pickle' automatically loads the fast version if available.
+    rename_module('pickle', 'cPickle')
 
 
-import shlex
-try:
-    shlex.split
-except AttributeError:
-    # Pre-2.3 Python has no shlex.split() function.
-    #
-    # The full white-space splitting semantics of shlex.split() are
-    # complicated to reproduce by hand, so just use a compatibility
-    # version of the shlex module cribbed from Python 2.5 with some
-    # minor modifications for older Python versions.
-    del shlex
-    import_as('_scons_shlex', 'shlex')
+# In 3.x, 'profile' automatically loads the fast version if available.
+rename_module('profile', 'cProfile')
 
 
-import shutil
-try:
-    shutil.move
-except AttributeError:
-    # Pre-2.3 Python has no shutil.move() function.
-    #
-    # Cribbed from Python 2.5.
-    import os
-
-    def move(src, dst):
-        """Recursively move a file or directory to another location.
-
-        If the destination is on our current filesystem, then simply use
-        rename.  Otherwise, copy src to the dst and then remove src.
-        A lot more could be done here...  A look at a mv.c shows a lot of
-        the issues this implementation glosses over.
-
-        """
-        try:
-            os.rename(src, dst)
-        except OSError:
-            if os.path.isdir(src):
-                if shutil.destinsrc(src, dst):
-                    raise Error, "Cannot move a directory '%s' into itself '%s'." % (src, dst)
-                shutil.copytree(src, dst, symlinks=True)
-                shutil.rmtree(src)
-            else:
-                shutil.copy2(src,dst)
-                os.unlink(src)
-    shutil.move = move
-    del move
-
-    def destinsrc(src, dst):
-        src = os.path.abspath(src)
-        return os.path.abspath(dst)[:len(src)] == src
-    shutil.destinsrc = destinsrc
-    del destinsrc
+# Before Python 3.0, the 'queue' module was named 'Queue'.
+rename_module('queue', 'Queue')
+
+
+# Before Python 3.0, the 'winreg' module was named '_winreg'
+rename_module('winreg', '_winreg')
 
 
 try:
@@ -242,57 +191,43 @@ except ImportError:
     # Pre-2.4 Python has no subprocess module.
     import_as('_scons_subprocess', 'subprocess')
 
-import sys
 try:
-    sys.version_info
+    sys.intern
 except AttributeError:
-    # Pre-1.6 Python has no sys.version_info
-    import string
-    version_string = string.split(sys.version)[0]
-    version_ints = map(int, string.split(version_string, '.'))
-    sys.version_info = tuple(version_ints + ['final', 0])
-
-try:
-    import UserString
-except ImportError:
-    # Pre-1.6 Python has no UserString module.
-    import_as('_scons_UserString', 'UserString')
-
-import tempfile
+    # Pre-2.6 Python has no sys.intern() function.
+    import builtins
+    try:
+        sys.intern = builtins.intern
+    except AttributeError:
+        # Pre-2.x Python has no builtin intern() function.
+        def intern(x):
+           return x
+        sys.intern = intern
+        del intern
 try:
-    tempfile.mkstemp
+    sys.maxsize
 except AttributeError:
-    # Pre-2.3 Python has no tempfile.mkstemp function, so try to simulate it.
-    # adapted from the mkstemp implementation in python 3.
-    import os
-    import errno
-    def mkstemp(*args, **kw):
-        text = False
-        # TODO (1.5)
-        #if 'text' in kw :
-        if 'text' in kw.keys() :
-            text = kw['text']
-            del kw['text']
-        elif len( args ) == 4 :
-            text = args[3]
-            args = args[:3]
-        flags = os.O_RDWR | os.O_CREAT | os.O_EXCL
-        if not text and hasattr( os, 'O_BINARY' ) :
-            flags = flags | os.O_BINARY
-        while True:
-            try :
-                name = apply(tempfile.mktemp, args, kw)
-                fd = os.open( name, flags, 0600 )
-                return (fd, os.path.abspath(name))
-            except OSError, e:
-                if e.errno == errno.EEXIST:
-                    continue
-                raise
-
-    tempfile.mkstemp = mkstemp
-    del mkstemp
-
-
+    # Pre-2.6 Python has no sys.maxsize attribute
+    # Wrapping sys in () is silly, but protects it from 2to3 renames fixer
+    sys.maxsize = (sys).maxint
+
+
+if os.environ.get('SCONS_HORRIBLE_REGRESSION_TEST_HACK') is not None:
+    # We can't apply the 'callable' fixer until the floor is 2.6, but the
+    # '-3' option to Python 2.6 and 2.7 generates almost ten thousand
+    # warnings.  This hack allows us to run regression tests with the '-3'
+    # option by replacing the callable() built-in function with a hack
+    # that performs the same function but doesn't generate the warning.
+    # Note that this hack is ONLY intended to be used for regression
+    # testing, and should NEVER be used for real runs.
+    from types import ClassType
+    def callable(obj):
+        if hasattr(obj, '__call__'): return True
+        if isinstance(obj, (ClassType, type)): return True
+        return False
+    import builtins
+    builtins.callable = callable
+    del callable
 
 
 # Local Variables:
diff --git a/engine/SCons/compat/_scons_UserString.py b/engine/SCons/compat/_scons_UserString.py
deleted file mode 100644
index f8c462e..0000000
--- a/engine/SCons/compat/_scons_UserString.py
+++ /dev/null
@@ -1,98 +0,0 @@
-#
-# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 The SCons Foundation
-#
-# Permission is hereby granted, free of charge, to any person obtaining
-# a copy of this software and associated documentation files (the
-# "Software"), to deal in the Software without restriction, including
-# without limitation the rights to use, copy, modify, merge, publish,
-# distribute, sublicense, and/or sell copies of the Software, and to
-# permit persons to whom the Software is furnished to do so, subject to
-# the following conditions:
-#
-# The above copyright notice and this permission notice shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
-# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
-# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
-
-__revision__ = "src/engine/SCons/compat/_scons_UserString.py 4720 2010/03/24 03:14:11 jars"
-
-__doc__ = """
-A user-defined wrapper around string objects
-
-This class is "borrowed" from the Python 2.2 UserString and modified
-slightly for use with SCons.  It is *NOT* guaranteed to be fully compliant
-with the standard UserString class from all later versions of Python.
-In particular, it does not necessarily contain all of the methods found
-in later versions.
-"""
-
-import types
-
-StringType = types.StringType
-
-if hasattr(types, 'UnicodeType'):
-    UnicodeType = types.UnicodeType
-    def is_String(obj):
-        return type(obj) in (StringType, UnicodeType)
-else:
-    def is_String(obj):
-        return type(obj) is StringType
-
-class UserString:
-    def __init__(self, seq):
-        if is_String(seq):
-            self.data = seq
-        elif isinstance(seq, UserString):
-            self.data = seq.data[:]
-        else:
-            self.data = str(seq)
-    def __str__(self): return str(self.data)
-    def __repr__(self): return repr(self.data)
-    def __int__(self): return int(self.data)
-    def __long__(self): return long(self.data)
-    def __float__(self): return float(self.data)
-    def __complex__(self): return complex(self.data)
-    def __hash__(self): return hash(self.data)
-
-    def __cmp__(self, string):
-        if isinstance(string, UserString):
-            return cmp(self.data, string.data)
-        else:
-            return cmp(self.data, string)
-    def __contains__(self, char):
-        return char in self.data
-
-    def __len__(self): return len(self.data)
-    def __getitem__(self, index): return self.__class__(self.data[index])
-    def __getslice__(self, start, end):
-        start = max(start, 0); end = max(end, 0)
-        return self.__class__(self.data[start:end])
-
-    def __add__(self, other):
-        if isinstance(other, UserString):
-            return self.__class__(self.data + other.data)
-        elif is_String(other):
-            return self.__class__(self.data + other)
-        else:
-            return self.__class__(self.data + str(other))
-    def __radd__(self, other):
-        if is_String(other):
-            return self.__class__(other + self.data)
-        else:
-            return self.__class__(str(other) + self.data)
-    def __mul__(self, n):
-        return self.__class__(self.data*n)
-    __rmul__ = __mul__
-
-# Local Variables:
-# tab-width:4
-# indent-tabs-mode:nil
-# End:
-# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/engine/SCons/compat/builtins.py b/engine/SCons/compat/_scons_builtins.py
index e687885..234d380 100644
--- a/engine/SCons/compat/builtins.py
+++ b/engine/SCons/compat/_scons_builtins.py
@@ -27,21 +27,18 @@
 # Copyright (c) 2001-2004 Twisted Matrix Laboratories
 
 __doc__ = """
-Compatibility idioms for __builtin__ names
+Compatibility idioms for builtins names
 
-This module adds names to the __builtin__ module for things that we want
+This module adds names to the builtins module for things that we want
 to use in SCons but which don't show up until later Python versions than
 the earliest ones we support.
 
-This module checks for the following __builtin__ names:
+This module checks for the following builtins names:
 
         all()
         any()
-        bool()
-        dict()
-        True
-        False
-        zip()
+        sorted()
+        memoryview()
 
 Implementations of functions are *NOT* guaranteed to be fully compliant
 with these functions in later versions of Python.  We are only concerned
@@ -55,9 +52,9 @@ the FUNCTIONS or DATA output, that means those names are already built in
 to this version of Python and we don't need to add them from this module.
 """
 
-__revision__ = "src/engine/SCons/compat/builtins.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/compat/_scons_builtins.py 5023 2010/06/14 22:05:46 scons"
 
-import __builtin__
+import builtins
 
 try:
     all
@@ -71,7 +68,7 @@ except NameError:
             if not element:
                 return False
         return True
-    __builtin__.all = all
+    builtins.all = all
     all = all
 
 try:
@@ -86,83 +83,49 @@ except NameError:
             if element:
                 return True
         return False
-    __builtin__.any = any
+    builtins.any = any
     any = any
 
 try:
-    bool
+    memoryview
 except NameError:
-    # Pre-2.2 Python has no bool() function.
-    def bool(value):
-        """Demote a value to 0 or 1, depending on its truth value.
+    # Pre-2.7 doesn't have the memoryview() built-in.
+    class memoryview(object):
+        def __init__(self, obj):
+            # wrapping buffer in () keeps the fixer from changing it
+            self.obj = (buffer)(obj)
+        def __getitem__(self, indx):
+            if isinstance(indx, slice):
+                return self.obj[indx.start:indx.stop]
+            else:
+                return self.obj[indx]
+    builtins.memoryview = memoryview
 
-        This is not to be confused with types.BooleanType, which is
-        way too hard to duplicate in early Python versions to be
-        worth the trouble.
-        """
-        return not not value
-    __builtin__.bool = bool
-    bool = bool
-
-try:
-    dict
-except NameError:
-    # Pre-2.2 Python has no dict() keyword.
-    def dict(seq=[], **kwargs):
-        """
-        New dictionary initialization.
-        """
-        d = {}
-        for k, v in seq:
-            d[k] = v
-        d.update(kwargs)
-        return d
-    __builtin__.dict = dict
-
-try:
-    False
-except NameError:
-    # Pre-2.2 Python has no False keyword.
-    __builtin__.False = not 1
-    # Assign to False in this module namespace so it shows up in pydoc output.
-    False = False
-
-try:
-    True
-except NameError:
-    # Pre-2.2 Python has no True keyword.
-    __builtin__.True = not 0
-    # Assign to True in this module namespace so it shows up in pydoc output.
-    True = True
-
-try:
-    file
-except NameError:
-    # Pre-2.2 Python has no file() function.
-    __builtin__.file = open
-
-#
 try:
-    zip
+    sorted
 except NameError:
-    # Pre-2.2 Python has no zip() function.
-    def zip(*lists):
-        """
-        Emulates the behavior we need from the built-in zip() function
-        added in Python 2.2.
-
-        Returns a list of tuples, where each tuple contains the i-th
-        element rom each of the argument sequences.  The returned
-        list is truncated in length to the length of the shortest
-        argument sequence.
-        """
-        result = []
-        for i in xrange(min(map(len, lists))):
-            result.append(tuple(map(lambda l, i=i: l[i], lists)))
+    # Pre-2.4 Python has no sorted() function.
+    #
+    # The pre-2.4 Python list.sort() method does not support
+    # list.sort(key=) nor list.sort(reverse=) keyword arguments, so
+    # we must implement the functionality of those keyword arguments
+    # by hand instead of passing them to list.sort().
+    def sorted(iterable, cmp=None, key=None, reverse=False):
+        if key is not None:
+            result = [(key(x), x) for x in iterable]
+        else:
+            result = iterable[:]
+        if cmp is None:
+            # Pre-2.3 Python does not support list.sort(None).
+            result.sort()
+        else:
+            result.sort(cmp)
+        if key is not None:
+            result = [t1 for t0,t1 in result]
+        if reverse:
+            result.reverse()
         return result
-    __builtin__.zip = zip
-
-
+    builtins.sorted = sorted
 
 #if sys.version_info[:3] in ((2, 2, 0), (2, 2, 1)):
 #    def lstrip(s, c=string.whitespace):
diff --git a/engine/SCons/compat/_scons_collections.py b/engine/SCons/compat/_scons_collections.py
new file mode 100644
index 0000000..b44319c
--- /dev/null
+++ b/engine/SCons/compat/_scons_collections.py
@@ -0,0 +1,45 @@
+#
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 The SCons Foundation
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__doc__ = """
+collections compatibility module for older (pre-2.4) Python versions
+
+This does not not NOT (repeat, *NOT*) provide complete collections
+functionality.  It only wraps the portions of collections functionality
+used by SCons, in an interface that looks enough like collections for
+our purposes.
+"""
+
+__revision__ = "src/engine/SCons/compat/_scons_collections.py 5023 2010/06/14 22:05:46 scons"
+
+# Use exec to hide old names from fixers.
+exec("""if True:
+            from UserDict import UserDict
+            from UserList import UserList
+            from UserString import UserString""")
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/engine/SCons/compat/_scons_dbm.py b/engine/SCons/compat/_scons_dbm.py
new file mode 100644
index 0000000..6228aee
--- /dev/null
+++ b/engine/SCons/compat/_scons_dbm.py
@@ -0,0 +1,45 @@
+#
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 The SCons Foundation
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__doc__ = """
+dbm compatibility module for Python versions that don't have dbm.
+
+This does not not NOT (repeat, *NOT*) provide complete dbm functionality.
+It's just a stub on which to hang just enough pieces of dbm functionality
+that the whichdb.whichdb() implementstation in the various 2.X versions of
+Python won't blow up even if dbm wasn't compiled in.
+"""
+
+__revision__ = "src/engine/SCons/compat/_scons_dbm.py 5023 2010/06/14 22:05:46 scons"
+
+class error(Exception):
+    pass
+
+def open(*args, **kw):
+    raise error()
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/engine/SCons/compat/_scons_hashlib.py b/engine/SCons/compat/_scons_hashlib.py
index b325e33..1c93787 100644
--- a/engine/SCons/compat/_scons_hashlib.py
+++ b/engine/SCons/compat/_scons_hashlib.py
@@ -31,18 +31,18 @@ purposes, anyway).  In fact, this module will raise an ImportError if
 the underlying md5 module isn't available.
 """
 
-__revision__ = "src/engine/SCons/compat/_scons_hashlib.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/compat/_scons_hashlib.py 5023 2010/06/14 22:05:46 scons"
 
 import md5
-import string
+from string import hexdigits
 
-class md5obj:
+class md5obj(object):
 
     md5_module = md5
 
     def __init__(self, name, string=''):
         if not name in ('MD5', 'md5'):
-            raise ValueError, "unsupported hash type"
+            raise ValueError("unsupported hash type")
         self.name = 'md5'
         self.m = self.md5_module.md5()
 
@@ -61,23 +61,8 @@ class md5obj:
     def update(self, arg):
         return self.m.update(arg)
 
-    if hasattr(md5.md5(), 'hexdigest'):
-
-        def hexdigest(self):
-            return self.m.hexdigest()
-
-    else:
-
-        # Objects created by the underlying md5 module have no native
-        # hexdigest() method (*cough* 1.5.2 *cough*), so provide an
-        # equivalent lifted from elsewhere.
-        def hexdigest(self):
-            h = string.hexdigits
-            r = ''
-            for c in self.digest():
-                i = ord(c)
-                r = r + h[(i >> 4) & 0xF] + h[i & 0xF]
-            return r
+    def hexdigest(self):
+        return self.m.hexdigest()
 
 new = md5obj
 
diff --git a/engine/SCons/compat/_scons_io.py b/engine/SCons/compat/_scons_io.py
new file mode 100644
index 0000000..3dc6ffd
--- /dev/null
+++ b/engine/SCons/compat/_scons_io.py
@@ -0,0 +1,45 @@
+#
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 The SCons Foundation
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__doc__ = """
+io compatibility module for older (pre-2.6) Python versions
+
+This does not not NOT (repeat, *NOT*) provide complete io
+functionality.  It only wraps the portions of io functionality used
+by SCons, in an interface that looks enough like io for our purposes.
+"""
+
+__revision__ = "src/engine/SCons/compat/_scons_io.py 5023 2010/06/14 22:05:46 scons"
+
+# Use the "imp" module to protect the imports below from fixers.
+import imp
+
+_cStringIO = imp.load_module('cStringIO', *imp.find_module('cStringIO'))
+StringIO = _cStringIO.StringIO
+del _cStringIO
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/engine/SCons/compat/_scons_itertools.py b/engine/SCons/compat/_scons_itertools.py
deleted file mode 100644
index 44add7c..0000000
--- a/engine/SCons/compat/_scons_itertools.py
+++ /dev/null
@@ -1,124 +0,0 @@
-#
-# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 The SCons Foundation
-#
-# Permission is hereby granted, free of charge, to any person obtaining
-# a copy of this software and associated documentation files (the
-# "Software"), to deal in the Software without restriction, including
-# without limitation the rights to use, copy, modify, merge, publish,
-# distribute, sublicense, and/or sell copies of the Software, and to
-# permit persons to whom the Software is furnished to do so, subject to
-# the following conditions:
-#
-# The above copyright notice and this permission notice shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
-# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
-# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
-
-__revision__ = "src/engine/SCons/compat/_scons_itertools.py 4720 2010/03/24 03:14:11 jars"
-
-__doc__ = """
-Implementations of itertools functions for Python versions that don't
-have iterators.
-
-These implement the functions by creating the entire list, not returning
-it element-by-element as the real itertools functions do.  This means
-that early Python versions won't get the performance benefit of using
-the itertools, but we can still use them so the later Python versions
-do get the advantages of using iterators.
-
-Because we return the entire list, we intentionally do not implement the
-itertools functions that "return" infinitely-long lists: the count(),
-cycle() and repeat() functions.  Other functions below have remained
-unimplemented simply because they aren't being used (yet) and it wasn't
-obvious how to do it.  Or, conversely, we only implemented those functions
-that *were* easy to implement (mostly because the Python documentation
-contained examples of equivalent code).
-
-Note that these do not have independent unit tests, so it's possible
-that there are bugs.
-"""
-
-def chain(*iterables):
-    result = []
-    for x in iterables:
-        result.extend(list(x))
-    return result
-
-def count(n=0):
-    # returns infinite length, should not be supported
-    raise NotImplementedError
-
-def cycle(iterable):
-    # returns infinite length, should not be supported
-    raise NotImplementedError
-
-def dropwhile(predicate, iterable):
-    result = []
-    for x in iterable:
-        if not predicate(x):
-            result.append(x)
-            break
-    result.extend(iterable)
-    return result
-
-def groupby(iterable, *args):
-    raise NotImplementedError
-
-def ifilter(predicate, iterable):
-    result = []
-    if predicate is None:
-        predicate = bool
-    for x in iterable:
-        if predicate(x):
-            result.append(x)
-    return result
-
-def ifilterfalse(predicate, iterable):
-    result = []
-    if predicate is None:
-        predicate = bool
-    for x in iterable:
-        if not predicate(x):
-            result.append(x)
-    return result
-
-def imap(function, *iterables):
-    return apply(map, (function,) + tuple(iterables))
-
-def islice(*args, **kw):
-    raise NotImplementedError
-
-def izip(*iterables):
-    return apply(zip, iterables)
-
-def repeat(*args, **kw):
-    # returns infinite length, should not be supported
-    raise NotImplementedError
-
-def starmap(*args, **kw):
-    raise NotImplementedError
-
-def takewhile(predicate, iterable):
-    result = []
-    for x in iterable:
-        if predicate(x):
-            result.append(x)
-        else:
-            break
-    return result
-
-def tee(*args, **kw):
-    raise NotImplementedError
-
-# Local Variables:
-# tab-width:4
-# indent-tabs-mode:nil
-# End:
-# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/engine/SCons/compat/_scons_optparse.py b/engine/SCons/compat/_scons_optparse.py
deleted file mode 100644
index 219adba..0000000
--- a/engine/SCons/compat/_scons_optparse.py
+++ /dev/null
@@ -1,1725 +0,0 @@
-"""optparse - a powerful, extensible, and easy-to-use option parser.
-
-By Greg Ward <gward@python.net>
-
-Originally distributed as Optik; see http://optik.sourceforge.net/ .
-
-If you have problems with this module, please do not file bugs,
-patches, or feature requests with Python; instead, use Optik's
-SourceForge project page:
-  http://sourceforge.net/projects/optik
-
-For support, use the optik-users@lists.sourceforge.net mailing list
-(http://lists.sourceforge.net/lists/listinfo/optik-users).
-"""
-
-# Python developers: please do not make changes to this file, since
-# it is automatically generated from the Optik source code.
-
-__version__ = "1.5.3"
-
-__all__ = ['Option',
-           'SUPPRESS_HELP',
-           'SUPPRESS_USAGE',
-           'Values',
-           'OptionContainer',
-           'OptionGroup',
-           'OptionParser',
-           'HelpFormatter',
-           'IndentedHelpFormatter',
-           'TitledHelpFormatter',
-           'OptParseError',
-           'OptionError',
-           'OptionConflictError',
-           'OptionValueError',
-           'BadOptionError']
-
-__copyright__ = """
-Copyright (c) 2001-2006 Gregory P. Ward.  All rights reserved.
-Copyright (c) 2002-2006 Python Software Foundation.  All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-  * Redistributions of source code must retain the above copyright
-    notice, this list of conditions and the following disclaimer.
-
-  * Redistributions in binary form must reproduce the above copyright
-    notice, this list of conditions and the following disclaimer in the
-    documentation and/or other materials provided with the distribution.
-
-  * Neither the name of the author nor the names of its
-    contributors may be used to endorse or promote products derived from
-    this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
-TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
-PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR
-CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-"""
-
-import string
-import sys, os
-import types
-import textwrap
-
-def _repr(self):
-    return "<%s at 0x%x: %s>" % (self.__class__.__name__, id(self), self)
-
-
-try:
-    sys.getdefaultencoding
-except AttributeError:
-    def fake_getdefaultencoding():
-        return None
-    sys.getdefaultencoding = fake_getdefaultencoding
-
-try:
-    ''.encode
-except AttributeError:
-    def encode_wrapper(s, encoding, replacement):
-        return s
-else:
-    def encode_wrapper(s, encoding, replacement):
-        return s.encode(encoding, replacement)
-
-
-# This file was generated from:
-#   Id: option_parser.py 527 2006-07-23 15:21:30Z greg
-#   Id: option.py 522 2006-06-11 16:22:03Z gward
-#   Id: help.py 527 2006-07-23 15:21:30Z greg
-#   Id: errors.py 509 2006-04-20 00:58:24Z gward
-
-try:
-    from gettext import gettext
-except ImportError:
-    def gettext(message):
-        return message
-_ = gettext
-
-
-class OptParseError (Exception):
-    def __init__(self, msg):
-        self.msg = msg
-
-    def __str__(self):
-        return self.msg
-
-
-class OptionError (OptParseError):
-    """
-    Raised if an Option instance is created with invalid or
-    inconsistent arguments.
-    """
-
-    def __init__(self, msg, option):
-        self.msg = msg
-        self.option_id = str(option)
-
-    def __str__(self):
-        if self.option_id:
-            return "option %s: %s" % (self.option_id, self.msg)
-        else:
-            return self.msg
-
-class OptionConflictError (OptionError):
-    """
-    Raised if conflicting options are added to an OptionParser.
-    """
-
-class OptionValueError (OptParseError):
-    """
-    Raised if an invalid option value is encountered on the command
-    line.
-    """
-
-class BadOptionError (OptParseError):
-    """
-    Raised if an invalid option is seen on the command line.
-    """
-    def __init__(self, opt_str):
-        self.opt_str = opt_str
-
-    def __str__(self):
-        return _("no such option: %s") % self.opt_str
-
-class AmbiguousOptionError (BadOptionError):
-    """
-    Raised if an ambiguous option is seen on the command line.
-    """
-    def __init__(self, opt_str, possibilities):
-        BadOptionError.__init__(self, opt_str)
-        self.possibilities = possibilities
-
-    def __str__(self):
-        return (_("ambiguous option: %s (%s?)")
-                % (self.opt_str, string.join(self.possibilities, ", ")))
-
-
-class HelpFormatter:
-
-    """
-    Abstract base class for formatting option help.  OptionParser
-    instances should use one of the HelpFormatter subclasses for
-    formatting help; by default IndentedHelpFormatter is used.
-
-    Instance attributes:
-      parser : OptionParser
-        the controlling OptionParser instance
-      indent_increment : int
-        the number of columns to indent per nesting level
-      max_help_position : int
-        the maximum starting column for option help text
-      help_position : int
-        the calculated starting column for option help text;
-        initially the same as the maximum
-      width : int
-        total number of columns for output (pass None to constructor for
-        this value to be taken from the $COLUMNS environment variable)
-      level : int
-        current indentation level
-      current_indent : int
-        current indentation level (in columns)
-      help_width : int
-        number of columns available for option help text (calculated)
-      default_tag : str
-        text to replace with each option's default value, "%default"
-        by default.  Set to false value to disable default value expansion.
-      option_strings : { Option : str }
-        maps Option instances to the snippet of help text explaining
-        the syntax of that option, e.g. "-h, --help" or
-        "-fFILE, --file=FILE"
-      _short_opt_fmt : str
-        format string controlling how short options with values are
-        printed in help text.  Must be either "%s%s" ("-fFILE") or
-        "%s %s" ("-f FILE"), because those are the two syntaxes that
-        Optik supports.
-      _long_opt_fmt : str
-        similar but for long options; must be either "%s %s" ("--file FILE")
-        or "%s=%s" ("--file=FILE").
-    """
-
-    NO_DEFAULT_VALUE = "none"
-
-    def __init__(self,
-                 indent_increment,
-                 max_help_position,
-                 width,
-                 short_first):
-        self.parser = None
-        self.indent_increment = indent_increment
-        self.help_position = self.max_help_position = max_help_position
-        if width is None:
-            try:
-                width = int(os.environ['COLUMNS'])
-            except (KeyError, ValueError):
-                width = 80
-            width = width - 2
-        self.width = width
-        self.current_indent = 0
-        self.level = 0
-        self.help_width = None          # computed later
-        self.short_first = short_first
-        self.default_tag = "%default"
-        self.option_strings = {}
-        self._short_opt_fmt = "%s %s"
-        self._long_opt_fmt = "%s=%s"
-
-    def set_parser(self, parser):
-        self.parser = parser
-
-    def set_short_opt_delimiter(self, delim):
-        if delim not in ("", " "):
-            raise ValueError(
-                "invalid metavar delimiter for short options: %r" % delim)
-        self._short_opt_fmt = "%s" + delim + "%s"
-
-    def set_long_opt_delimiter(self, delim):
-        if delim not in ("=", " "):
-            raise ValueError(
-                "invalid metavar delimiter for long options: %r" % delim)
-        self._long_opt_fmt = "%s" + delim + "%s"
-
-    def indent(self):
-        self.current_indent = self.current_indent + self.indent_increment
-        self.level = self.level + 1
-
-    def dedent(self):
-        self.current_indent = self.current_indent - self.indent_increment
-        assert self.current_indent >= 0, "Indent decreased below 0."
-        self.level = self.level - 1
-
-    def format_usage(self, usage):
-        raise NotImplementedError, "subclasses must implement"
-
-    def format_heading(self, heading):
-        raise NotImplementedError, "subclasses must implement"
-
-    def _format_text(self, text):
-        """
-        Format a paragraph of free-form text for inclusion in the
-        help output at the current indentation level.
-        """
-        text_width = self.width - self.current_indent
-        indent = " "*self.current_indent
-        return textwrap.fill(text,
-                             text_width,
-                             initial_indent=indent,
-                             subsequent_indent=indent)
-
-    def format_description(self, description):
-        if description:
-            return self._format_text(description) + "\n"
-        else:
-            return ""
-
-    def format_epilog(self, epilog):
-        if epilog:
-            return "\n" + self._format_text(epilog) + "\n"
-        else:
-            return ""
-
-
-    def expand_default(self, option):
-        if self.parser is None or not self.default_tag:
-            return option.help
-
-        default_value = self.parser.defaults.get(option.dest)
-        if default_value is NO_DEFAULT or default_value is None:
-            default_value = self.NO_DEFAULT_VALUE
-
-        return string.replace(option.help, self.default_tag, str(default_value))
-
-    def format_option(self, option):
-        # The help for each option consists of two parts:
-        #   * the opt strings and metavars
-        #     eg. ("-x", or "-fFILENAME, --file=FILENAME")
-        #   * the user-supplied help string
-        #     eg. ("turn on expert mode", "read data from FILENAME")
-        #
-        # If possible, we write both of these on the same line:
-        #   -x      turn on expert mode
-        #
-        # But if the opt string list is too long, we put the help
-        # string on a second line, indented to the same column it would
-        # start in if it fit on the first line.
-        #   -fFILENAME, --file=FILENAME
-        #           read data from FILENAME
-        result = []
-        opts = self.option_strings[option]
-        opt_width = self.help_position - self.current_indent - 2
-        if len(opts) > opt_width:
-            opts = "%*s%s\n" % (self.current_indent, "", opts)
-            indent_first = self.help_position
-        else:                       # start help on same line as opts
-            opts = "%*s%-*s  " % (self.current_indent, "", opt_width, opts)
-            indent_first = 0
-        result.append(opts)
-        if option.help:
-            help_text = self.expand_default(option)
-            help_lines = textwrap.wrap(help_text, self.help_width)
-            result.append("%*s%s\n" % (indent_first, "", help_lines[0]))
-            for line in help_lines[1:]:
-                result.append("%*s%s\n" % (self.help_position, "", line))
-        elif opts[-1] != "\n":
-            result.append("\n")
-        return string.join(result, "")
-
-    def store_option_strings(self, parser):
-        self.indent()
-        max_len = 0
-        for opt in parser.option_list:
-            strings = self.format_option_strings(opt)
-            self.option_strings[opt] = strings
-            max_len = max(max_len, len(strings) + self.current_indent)
-        self.indent()
-        for group in parser.option_groups:
-            for opt in group.option_list:
-                strings = self.format_option_strings(opt)
-                self.option_strings[opt] = strings
-                max_len = max(max_len, len(strings) + self.current_indent)
-        self.dedent()
-        self.dedent()
-        self.help_position = min(max_len + 2, self.max_help_position)
-        self.help_width = self.width - self.help_position
-
-    def format_option_strings(self, option):
-        """Return a comma-separated list of option strings & metavariables."""
-        if option.takes_value():
-            metavar = option.metavar or string.upper(option.dest)
-            short_opts = []
-            for sopt in option._short_opts:
-                short_opts.append(self._short_opt_fmt % (sopt, metavar))
-            long_opts = []
-            for lopt in option._long_opts:
-                long_opts.append(self._long_opt_fmt % (lopt, metavar))
-        else:
-            short_opts = option._short_opts
-            long_opts = option._long_opts
-
-        if self.short_first:
-            opts = short_opts + long_opts
-        else:
-            opts = long_opts + short_opts
-
-        return string.join(opts, ", ")
-
-class IndentedHelpFormatter (HelpFormatter):
-    """Format help with indented section bodies.
-    """
-
-    def __init__(self,
-                 indent_increment=2,
-                 max_help_position=24,
-                 width=None,
-                 short_first=1):
-        HelpFormatter.__init__(
-            self, indent_increment, max_help_position, width, short_first)
-
-    def format_usage(self, usage):
-        return _("Usage: %s\n") % usage
-
-    def format_heading(self, heading):
-        return "%*s%s:\n" % (self.current_indent, "", heading)
-
-
-class TitledHelpFormatter (HelpFormatter):
-    """Format help with underlined section headers.
-    """
-
-    def __init__(self,
-                 indent_increment=0,
-                 max_help_position=24,
-                 width=None,
-                 short_first=0):
-        HelpFormatter.__init__ (
-            self, indent_increment, max_help_position, width, short_first)
-
-    def format_usage(self, usage):
-        return "%s  %s\n" % (self.format_heading(_("Usage")), usage)
-
-    def format_heading(self, heading):
-        return "%s\n%s\n" % (heading, "=-"[self.level] * len(heading))
-
-
-def _parse_num(val, type):
-    if string.lower(val[:2]) == "0x":         # hexadecimal
-        radix = 16
-    elif string.lower(val[:2]) == "0b":       # binary
-        radix = 2
-        val = val[2:] or "0"            # have to remove "0b" prefix
-    elif val[:1] == "0":                # octal
-        radix = 8
-    else:                               # decimal
-        radix = 10
-
-    return type(val, radix)
-
-def _parse_int(val):
-    return _parse_num(val, int)
-
-def _parse_long(val):
-    return _parse_num(val, long)
-
-try:
-    int('0', 10)
-except TypeError:
-    # Python 1.5.2 doesn't allow a radix value to be passed to int().
-    _parse_int = int
-
-try:
-    long('0', 10)
-except TypeError:
-    # Python 1.5.2 doesn't allow a radix value to be passed to long().
-    _parse_long = long
-
-_builtin_cvt = { "int" : (_parse_int, _("integer")),
-                 "long" : (_parse_long, _("long integer")),
-                 "float" : (float, _("floating-point")),
-                 "complex" : (complex, _("complex")) }
-
-def check_builtin(option, opt, value):
-    (cvt, what) = _builtin_cvt[option.type]
-    try:
-        return cvt(value)
-    except ValueError:
-        raise OptionValueError(
-            _("option %s: invalid %s value: %r") % (opt, what, value))
-
-def check_choice(option, opt, value):
-    if value in option.choices:
-        return value
-    else:
-        choices = string.join(map(repr, option.choices), ", ")
-        raise OptionValueError(
-            _("option %s: invalid choice: %r (choose from %s)")
-            % (opt, value, choices))
-
-# Not supplying a default is different from a default of None,
-# so we need an explicit "not supplied" value.
-NO_DEFAULT = ("NO", "DEFAULT")
-
-
-class Option:
-    """
-    Instance attributes:
-      _short_opts : [string]
-      _long_opts : [string]
-
-      action : string
-      type : string
-      dest : string
-      default : any
-      nargs : int
-      const : any
-      choices : [string]
-      callback : function
-      callback_args : (any*)
-      callback_kwargs : { string : any }
-      help : string
-      metavar : string
-    """
-
-    # The list of instance attributes that may be set through
-    # keyword args to the constructor.
-    ATTRS = ['action',
-             'type',
-             'dest',
-             'default',
-             'nargs',
-             'const',
-             'choices',
-             'callback',
-             'callback_args',
-             'callback_kwargs',
-             'help',
-             'metavar']
-
-    # The set of actions allowed by option parsers.  Explicitly listed
-    # here so the constructor can validate its arguments.
-    ACTIONS = ("store",
-               "store_const",
-               "store_true",
-               "store_false",
-               "append",
-               "append_const",
-               "count",
-               "callback",
-               "help",
-               "version")
-
-    # The set of actions that involve storing a value somewhere;
-    # also listed just for constructor argument validation.  (If
-    # the action is one of these, there must be a destination.)
-    STORE_ACTIONS = ("store",
-                     "store_const",
-                     "store_true",
-                     "store_false",
-                     "append",
-                     "append_const",
-                     "count")
-
-    # The set of actions for which it makes sense to supply a value
-    # type, ie. which may consume an argument from the command line.
-    TYPED_ACTIONS = ("store",
-                     "append",
-                     "callback")
-
-    # The set of actions which *require* a value type, ie. that
-    # always consume an argument from the command line.
-    ALWAYS_TYPED_ACTIONS = ("store",
-                            "append")
-
-    # The set of actions which take a 'const' attribute.
-    CONST_ACTIONS = ("store_const",
-                     "append_const")
-
-    # The set of known types for option parsers.  Again, listed here for
-    # constructor argument validation.
-    TYPES = ("string", "int", "long", "float", "complex", "choice")
-
-    # Dictionary of argument checking functions, which convert and
-    # validate option arguments according to the option type.
-    #
-    # Signature of checking functions is:
-    #   check(option : Option, opt : string, value : string) -> any
-    # where
-    #   option is the Option instance calling the checker
-    #   opt is the actual option seen on the command-line
-    #     (eg. "-a", "--file")
-    #   value is the option argument seen on the command-line
-    #
-    # The return value should be in the appropriate Python type
-    # for option.type -- eg. an integer if option.type == "int".
-    #
-    # If no checker is defined for a type, arguments will be
-    # unchecked and remain strings.
-    TYPE_CHECKER = { "int"    : check_builtin,
-                     "long"   : check_builtin,
-                     "float"  : check_builtin,
-                     "complex": check_builtin,
-                     "choice" : check_choice,
-                   }
-
-
-    # CHECK_METHODS is a list of unbound method objects; they are called
-    # by the constructor, in order, after all attributes are
-    # initialized.  The list is created and filled in later, after all
-    # the methods are actually defined.  (I just put it here because I
-    # like to define and document all class attributes in the same
-    # place.)  Subclasses that add another _check_*() method should
-    # define their own CHECK_METHODS list that adds their check method
-    # to those from this class.
-    CHECK_METHODS = None
-
-
-    # -- Constructor/initialization methods ----------------------------
-
-    def __init__(self, *opts, **attrs):
-        # Set _short_opts, _long_opts attrs from 'opts' tuple.
-        # Have to be set now, in case no option strings are supplied.
-        self._short_opts = []
-        self._long_opts = []
-        opts = self._check_opt_strings(opts)
-        self._set_opt_strings(opts)
-
-        # Set all other attrs (action, type, etc.) from 'attrs' dict
-        self._set_attrs(attrs)
-
-        # Check all the attributes we just set.  There are lots of
-        # complicated interdependencies, but luckily they can be farmed
-        # out to the _check_*() methods listed in CHECK_METHODS -- which
-        # could be handy for subclasses!  The one thing these all share
-        # is that they raise OptionError if they discover a problem.
-        for checker in self.CHECK_METHODS:
-            checker(self)
-
-    def _check_opt_strings(self, opts):
-        # Filter out None because early versions of Optik had exactly
-        # one short option and one long option, either of which
-        # could be None.
-        opts = filter(None, opts)
-        if not opts:
-            raise TypeError("at least one option string must be supplied")
-        return opts
-
-    def _set_opt_strings(self, opts):
-        for opt in opts:
-            if len(opt) < 2:
-                raise OptionError(
-                    "invalid option string %r: "
-                    "must be at least two characters long" % opt, self)
-            elif len(opt) == 2:
-                if not (opt[0] == "-" and opt[1] != "-"):
-                    raise OptionError(
-                        "invalid short option string %r: "
-                        "must be of the form -x, (x any non-dash char)" % opt,
-                        self)
-                self._short_opts.append(opt)
-            else:
-                if not (opt[0:2] == "--" and opt[2] != "-"):
-                    raise OptionError(
-                        "invalid long option string %r: "
-                        "must start with --, followed by non-dash" % opt,
-                        self)
-                self._long_opts.append(opt)
-
-    def _set_attrs(self, attrs):
-        for attr in self.ATTRS:
-            if attrs.has_key(attr):
-                setattr(self, attr, attrs[attr])
-                del attrs[attr]
-            else:
-                if attr == 'default':
-                    setattr(self, attr, NO_DEFAULT)
-                else:
-                    setattr(self, attr, None)
-        if attrs:
-            attrs = attrs.keys()
-            attrs.sort()
-            raise OptionError(
-                "invalid keyword arguments: %s" % string.join(attrs, ", "),
-                self)
-
-
-    # -- Constructor validation methods --------------------------------
-
-    def _check_action(self):
-        if self.action is None:
-            self.action = "store"
-        elif self.action not in self.ACTIONS:
-            raise OptionError("invalid action: %r" % self.action, self)
-
-    def _check_type(self):
-        if self.type is None:
-            if self.action in self.ALWAYS_TYPED_ACTIONS:
-                if self.choices is not None:
-                    # The "choices" attribute implies "choice" type.
-                    self.type = "choice"
-                else:
-                    # No type given?  "string" is the most sensible default.
-                    self.type = "string"
-        else:
-            # Allow type objects or builtin type conversion functions
-            # (int, str, etc.) as an alternative to their names.  (The
-            # complicated check of __builtin__ is only necessary for
-            # Python 2.1 and earlier, and is short-circuited by the
-            # first check on modern Pythons.)
-            import __builtin__
-            if ( type(self.type) is types.TypeType or
-                 (hasattr(self.type, "__name__") and
-                  getattr(__builtin__, self.type.__name__, None) is self.type) ):
-                self.type = self.type.__name__
-
-            if self.type == "str":
-                self.type = "string"
-
-            if self.type not in self.TYPES:
-                raise OptionError("invalid option type: %r" % self.type, self)
-            if self.action not in self.TYPED_ACTIONS:
-                raise OptionError(
-                    "must not supply a type for action %r" % self.action, self)
-
-    def _check_choice(self):
-        if self.type == "choice":
-            if self.choices is None:
-                raise OptionError(
-                    "must supply a list of choices for type 'choice'", self)
-            elif type(self.choices) not in (types.TupleType, types.ListType):
-                raise OptionError(
-                    "choices must be a list of strings ('%s' supplied)"
-                    % string.split(str(type(self.choices)), "'")[1], self)
-        elif self.choices is not None:
-            raise OptionError(
-                "must not supply choices for type %r" % self.type, self)
-
-    def _check_dest(self):
-        # No destination given, and we need one for this action.  The
-        # self.type check is for callbacks that take a value.
-        takes_value = (self.action in self.STORE_ACTIONS or
-                       self.type is not None)
-        if self.dest is None and takes_value:
-
-            # Glean a destination from the first long option string,
-            # or from the first short option string if no long options.
-            if self._long_opts:
-                # eg. "--foo-bar" -> "foo_bar"
-                self.dest = string.replace(self._long_opts[0][2:], '-', '_')
-            else:
-                self.dest = self._short_opts[0][1]
-
-    def _check_const(self):
-        if self.action not in self.CONST_ACTIONS and self.const is not None:
-            raise OptionError(
-                "'const' must not be supplied for action %r" % self.action,
-                self)
-
-    def _check_nargs(self):
-        if self.action in self.TYPED_ACTIONS:
-            if self.nargs is None:
-                self.nargs = 1
-        elif self.nargs is not None:
-            raise OptionError(
-                "'nargs' must not be supplied for action %r" % self.action,
-                self)
-
-    def _check_callback(self):
-        if self.action == "callback":
-            if not callable(self.callback):
-                raise OptionError(
-                    "callback not callable: %r" % self.callback, self)
-            if (self.callback_args is not None and
-                type(self.callback_args) is not types.TupleType):
-                raise OptionError(
-                    "callback_args, if supplied, must be a tuple: not %r"
-                    % self.callback_args, self)
-            if (self.callback_kwargs is not None and
-                type(self.callback_kwargs) is not types.DictType):
-                raise OptionError(
-                    "callback_kwargs, if supplied, must be a dict: not %r"
-                    % self.callback_kwargs, self)
-        else:
-            if self.callback is not None:
-                raise OptionError(
-                    "callback supplied (%r) for non-callback option"
-                    % self.callback, self)
-            if self.callback_args is not None:
-                raise OptionError(
-                    "callback_args supplied for non-callback option", self)
-            if self.callback_kwargs is not None:
-                raise OptionError(
-                    "callback_kwargs supplied for non-callback option", self)
-
-
-    CHECK_METHODS = [_check_action,
-                     _check_type,
-                     _check_choice,
-                     _check_dest,
-                     _check_const,
-                     _check_nargs,
-                     _check_callback]
-
-
-    # -- Miscellaneous methods -----------------------------------------
-
-    def __str__(self):
-        return string.join(self._short_opts + self._long_opts, "/")
-
-    __repr__ = _repr
-
-    def takes_value(self):
-        return self.type is not None
-
-    def get_opt_string(self):
-        if self._long_opts:
-            return self._long_opts[0]
-        else:
-            return self._short_opts[0]
-
-
-    # -- Processing methods --------------------------------------------
-
-    def check_value(self, opt, value):
-        checker = self.TYPE_CHECKER.get(self.type)
-        if checker is None:
-            return value
-        else:
-            return checker(self, opt, value)
-
-    def convert_value(self, opt, value):
-        if value is not None:
-            if self.nargs == 1:
-                return self.check_value(opt, value)
-            else:
-                return tuple(map(lambda v, o=opt, s=self: s.check_value(o, v), value))
-
-    def process(self, opt, value, values, parser):
-
-        # First, convert the value(s) to the right type.  Howl if any
-        # value(s) are bogus.
-        value = self.convert_value(opt, value)
-
-        # And then take whatever action is expected of us.
-        # This is a separate method to make life easier for
-        # subclasses to add new actions.
-        return self.take_action(
-            self.action, self.dest, opt, value, values, parser)
-
-    def take_action(self, action, dest, opt, value, values, parser):
-        if action == "store":
-            setattr(values, dest, value)
-        elif action == "store_const":
-            setattr(values, dest, self.const)
-        elif action == "store_true":
-            setattr(values, dest, True)
-        elif action == "store_false":
-            setattr(values, dest, False)
-        elif action == "append":
-            values.ensure_value(dest, []).append(value)
-        elif action == "append_const":
-            values.ensure_value(dest, []).append(self.const)
-        elif action == "count":
-            setattr(values, dest, values.ensure_value(dest, 0) + 1)
-        elif action == "callback":
-            args = self.callback_args or ()
-            kwargs = self.callback_kwargs or {}
-            apply(self.callback, (self, opt, value, parser,) + args, kwargs)
-        elif action == "help":
-            parser.print_help()
-            parser.exit()
-        elif action == "version":
-            parser.print_version()
-            parser.exit()
-        else:
-            raise RuntimeError, "unknown action %r" % self.action
-
-        return 1
-
-# class Option
-
-
-SUPPRESS_HELP = "SUPPRESS"+"HELP"
-SUPPRESS_USAGE = "SUPPRESS"+"USAGE"
-
-# For compatibility with Python 2.2
-try:
-    True, False
-except NameError:
-    (True, False) = (1, 0)
-
-try:
-    types.UnicodeType
-except AttributeError:
-    def isbasestring(x):
-        return isinstance(x, types.StringType)
-else:
-    def isbasestring(x):
-        return isinstance(x, types.StringType) or isinstance(x, types.UnicodeType)
-
-class Values:
-
-    def __init__(self, defaults=None):
-        if defaults:
-            for (attr, val) in defaults.items():
-                setattr(self, attr, val)
-
-    def __str__(self):
-        return str(self.__dict__)
-
-    __repr__ = _repr
-
-    def __cmp__(self, other):
-        if isinstance(other, Values):
-            return cmp(self.__dict__, other.__dict__)
-        elif isinstance(other, types.DictType):
-            return cmp(self.__dict__, other)
-        else:
-            return -1
-
-    def _update_careful(self, dict):
-        """
-        Update the option values from an arbitrary dictionary, but only
-        use keys from dict that already have a corresponding attribute
-        in self.  Any keys in dict without a corresponding attribute
-        are silently ignored.
-        """
-        for attr in dir(self):
-            if dict.has_key(attr):
-                dval = dict[attr]
-                if dval is not None:
-                    setattr(self, attr, dval)
-
-    def _update_loose(self, dict):
-        """
-        Update the option values from an arbitrary dictionary,
-        using all keys from the dictionary regardless of whether
-        they have a corresponding attribute in self or not.
-        """
-        self.__dict__.update(dict)
-
-    def _update(self, dict, mode):
-        if mode == "careful":
-            self._update_careful(dict)
-        elif mode == "loose":
-            self._update_loose(dict)
-        else:
-            raise ValueError, "invalid update mode: %r" % mode
-
-    def read_module(self, modname, mode="careful"):
-        __import__(modname)
-        mod = sys.modules[modname]
-        self._update(vars(mod), mode)
-
-    def read_file(self, filename, mode="careful"):
-        vars = {}
-        exec open(filename, 'rU').read() in vars
-        self._update(vars, mode)
-
-    def ensure_value(self, attr, value):
-        if not hasattr(self, attr) or getattr(self, attr) is None:
-            setattr(self, attr, value)
-        return getattr(self, attr)
-
-
-class OptionContainer:
-
-    """
-    Abstract base class.
-
-    Class attributes:
-      standard_option_list : [Option]
-        list of standard options that will be accepted by all instances
-        of this parser class (intended to be overridden by subclasses).
-
-    Instance attributes:
-      option_list : [Option]
-        the list of Option objects contained by this OptionContainer
-      _short_opt : { string : Option }
-        dictionary mapping short option strings, eg. "-f" or "-X",
-        to the Option instances that implement them.  If an Option
-        has multiple short option strings, it will appears in this
-        dictionary multiple times. [1]
-      _long_opt : { string : Option }
-        dictionary mapping long option strings, eg. "--file" or
-        "--exclude", to the Option instances that implement them.
-        Again, a given Option can occur multiple times in this
-        dictionary. [1]
-      defaults : { string : any }
-        dictionary mapping option destination names to default
-        values for each destination [1]
-
-    [1] These mappings are common to (shared by) all components of the
-        controlling OptionParser, where they are initially created.
-
-    """
-
-    def __init__(self, option_class, conflict_handler, description):
-        # Initialize the option list and related data structures.
-        # This method must be provided by subclasses, and it must
-        # initialize at least the following instance attributes:
-        # option_list, _short_opt, _long_opt, defaults.
-        self._create_option_list()
-
-        self.option_class = option_class
-        self.set_conflict_handler(conflict_handler)
-        self.set_description(description)
-
-    def _create_option_mappings(self):
-        # For use by OptionParser constructor -- create the master
-        # option mappings used by this OptionParser and all
-        # OptionGroups that it owns.
-        self._short_opt = {}            # single letter -> Option instance
-        self._long_opt = {}             # long option -> Option instance
-        self.defaults = {}              # maps option dest -> default value
-
-
-    def _share_option_mappings(self, parser):
-        # For use by OptionGroup constructor -- use shared option
-        # mappings from the OptionParser that owns this OptionGroup.
-        self._short_opt = parser._short_opt
-        self._long_opt = parser._long_opt
-        self.defaults = parser.defaults
-
-    def set_conflict_handler(self, handler):
-        if handler not in ("error", "resolve"):
-            raise ValueError, "invalid conflict_resolution value %r" % handler
-        self.conflict_handler = handler
-
-    def set_description(self, description):
-        self.description = description
-
-    def get_description(self):
-        return self.description
-
-
-    def destroy(self):
-        """see OptionParser.destroy()."""
-        del self._short_opt
-        del self._long_opt
-        del self.defaults
-
-
-    # -- Option-adding methods -----------------------------------------
-
-    def _check_conflict(self, option):
-        conflict_opts = []
-        for opt in option._short_opts:
-            if self._short_opt.has_key(opt):
-                conflict_opts.append((opt, self._short_opt[opt]))
-        for opt in option._long_opts:
-            if self._long_opt.has_key(opt):
-                conflict_opts.append((opt, self._long_opt[opt]))
-
-        if conflict_opts:
-            handler = self.conflict_handler
-            if handler == "error":
-                raise OptionConflictError(
-                    "conflicting option string(s): %s"
-                    % string.join(map(lambda co: co[0], conflict_opts), ", "),
-                    option)
-            elif handler == "resolve":
-                for (opt, c_option) in conflict_opts:
-                    if opt[:2] == "--":
-                        c_option._long_opts.remove(opt)
-                        del self._long_opt[opt]
-                    else:
-                        c_option._short_opts.remove(opt)
-                        del self._short_opt[opt]
-                    if not (c_option._short_opts or c_option._long_opts):
-                        c_option.container.option_list.remove(c_option)
-
-    def add_option(self, *args, **kwargs):
-        """add_option(Option)
-           add_option(opt_str, ..., kwarg=val, ...)
-        """
-        if type(args[0]) is types.StringType:
-            option = apply(self.option_class, args, kwargs)
-        elif len(args) == 1 and not kwargs:
-            option = args[0]
-            if not isinstance(option, Option):
-                raise TypeError, "not an Option instance: %r" % option
-        else:
-            raise TypeError, "invalid arguments"
-
-        self._check_conflict(option)
-
-        self.option_list.append(option)
-        option.container = self
-        for opt in option._short_opts:
-            self._short_opt[opt] = option
-        for opt in option._long_opts:
-            self._long_opt[opt] = option
-
-        if option.dest is not None:     # option has a dest, we need a default
-            if option.default is not NO_DEFAULT:
-                self.defaults[option.dest] = option.default
-            elif not self.defaults.has_key(option.dest):
-                self.defaults[option.dest] = None
-
-        return option
-
-    def add_options(self, option_list):
-        for option in option_list:
-            self.add_option(option)
-
-    # -- Option query/removal methods ----------------------------------
-
-    def get_option(self, opt_str):
-        return (self._short_opt.get(opt_str) or
-                self._long_opt.get(opt_str))
-
-    def has_option(self, opt_str):
-        return (self._short_opt.has_key(opt_str) or
-                self._long_opt.has_key(opt_str))
-
-    def remove_option(self, opt_str):
-        option = self._short_opt.get(opt_str)
-        if option is None:
-            option = self._long_opt.get(opt_str)
-        if option is None:
-            raise ValueError("no such option %r" % opt_str)
-
-        for opt in option._short_opts:
-            del self._short_opt[opt]
-        for opt in option._long_opts:
-            del self._long_opt[opt]
-        option.container.option_list.remove(option)
-
-
-    # -- Help-formatting methods ---------------------------------------
-
-    def format_option_help(self, formatter):
-        if not self.option_list:
-            return ""
-        result = []
-        for option in self.option_list:
-            if not option.help is SUPPRESS_HELP:
-                result.append(formatter.format_option(option))
-        return string.join(result, "")
-
-    def format_description(self, formatter):
-        return formatter.format_description(self.get_description())
-
-    def format_help(self, formatter):
-        result = []
-        if self.description:
-            result.append(self.format_description(formatter))
-        if self.option_list:
-            result.append(self.format_option_help(formatter))
-        return string.join(result, "\n")
-
-
-class OptionGroup (OptionContainer):
-
-    def __init__(self, parser, title, description=None):
-        self.parser = parser
-        OptionContainer.__init__(
-            self, parser.option_class, parser.conflict_handler, description)
-        self.title = title
-
-    def _create_option_list(self):
-        self.option_list = []
-        self._share_option_mappings(self.parser)
-
-    def set_title(self, title):
-        self.title = title
-
-    def destroy(self):
-        """see OptionParser.destroy()."""
-        OptionContainer.destroy(self)
-        del self.option_list
-
-    # -- Help-formatting methods ---------------------------------------
-
-    def format_help(self, formatter):
-        result = formatter.format_heading(self.title)
-        formatter.indent()
-        result = result + OptionContainer.format_help(self, formatter)
-        formatter.dedent()
-        return result
-
-
-class OptionParser (OptionContainer):
-
-    """
-    Class attributes:
-      standard_option_list : [Option]
-        list of standard options that will be accepted by all instances
-        of this parser class (intended to be overridden by subclasses).
-
-    Instance attributes:
-      usage : string
-        a usage string for your program.  Before it is displayed
-        to the user, "%prog" will be expanded to the name of
-        your program (self.prog or os.path.basename(sys.argv[0])).
-      prog : string
-        the name of the current program (to override
-        os.path.basename(sys.argv[0])).
-      epilog : string
-        paragraph of help text to print after option help
-
-      option_groups : [OptionGroup]
-        list of option groups in this parser (option groups are
-        irrelevant for parsing the command-line, but very useful
-        for generating help)
-
-      allow_interspersed_args : bool = true
-        if true, positional arguments may be interspersed with options.
-        Assuming -a and -b each take a single argument, the command-line
-          -ablah foo bar -bboo baz
-        will be interpreted the same as
-          -ablah -bboo -- foo bar baz
-        If this flag were false, that command line would be interpreted as
-          -ablah -- foo bar -bboo baz
-        -- ie. we stop processing options as soon as we see the first
-        non-option argument.  (This is the tradition followed by
-        Python's getopt module, Perl's Getopt::Std, and other argument-
-        parsing libraries, but it is generally annoying to users.)
-
-      process_default_values : bool = true
-        if true, option default values are processed similarly to option
-        values from the command line: that is, they are passed to the
-        type-checking function for the option's type (as long as the
-        default value is a string).  (This really only matters if you
-        have defined custom types; see SF bug #955889.)  Set it to false
-        to restore the behaviour of Optik 1.4.1 and earlier.
-
-      rargs : [string]
-        the argument list currently being parsed.  Only set when
-        parse_args() is active, and continually trimmed down as
-        we consume arguments.  Mainly there for the benefit of
-        callback options.
-      largs : [string]
-        the list of leftover arguments that we have skipped while
-        parsing options.  If allow_interspersed_args is false, this
-        list is always empty.
-      values : Values
-        the set of option values currently being accumulated.  Only
-        set when parse_args() is active.  Also mainly for callbacks.
-
-    Because of the 'rargs', 'largs', and 'values' attributes,
-    OptionParser is not thread-safe.  If, for some perverse reason, you
-    need to parse command-line arguments simultaneously in different
-    threads, use different OptionParser instances.
-
-    """
-
-    standard_option_list = []
-
-    def __init__(self,
-                 usage=None,
-                 option_list=None,
-                 option_class=Option,
-                 version=None,
-                 conflict_handler="error",
-                 description=None,
-                 formatter=None,
-                 add_help_option=True,
-                 prog=None,
-                 epilog=None):
-        OptionContainer.__init__(
-            self, option_class, conflict_handler, description)
-        self.set_usage(usage)
-        self.prog = prog
-        self.version = version
-        self.allow_interspersed_args = True
-        self.process_default_values = True
-        if formatter is None:
-            formatter = IndentedHelpFormatter()
-        self.formatter = formatter
-        self.formatter.set_parser(self)
-        self.epilog = epilog
-
-        # Populate the option list; initial sources are the
-        # standard_option_list class attribute, the 'option_list'
-        # argument, and (if applicable) the _add_version_option() and
-        # _add_help_option() methods.
-        self._populate_option_list(option_list,
-                                   add_help=add_help_option)
-
-        self._init_parsing_state()
-
-
-    def destroy(self):
-        """
-        Declare that you are done with this OptionParser.  This cleans up
-        reference cycles so the OptionParser (and all objects referenced by
-        it) can be garbage-collected promptly.  After calling destroy(), the
-        OptionParser is unusable.
-        """
-        OptionContainer.destroy(self)
-        for group in self.option_groups:
-            group.destroy()
-        del self.option_list
-        del self.option_groups
-        del self.formatter
-
-
-    # -- Private methods -----------------------------------------------
-    # (used by our or OptionContainer's constructor)
-
-    def _create_option_list(self):
-        self.option_list = []
-        self.option_groups = []
-        self._create_option_mappings()
-
-    def _add_help_option(self):
-        self.add_option("-h", "--help",
-                        action="help",
-                        help=_("show this help message and exit"))
-
-    def _add_version_option(self):
-        self.add_option("--version",
-                        action="version",
-                        help=_("show program's version number and exit"))
-
-    def _populate_option_list(self, option_list, add_help=True):
-        if self.standard_option_list:
-            self.add_options(self.standard_option_list)
-        if option_list:
-            self.add_options(option_list)
-        if self.version:
-            self._add_version_option()
-        if add_help:
-            self._add_help_option()
-
-    def _init_parsing_state(self):
-        # These are set in parse_args() for the convenience of callbacks.
-        self.rargs = None
-        self.largs = None
-        self.values = None
-
-
-    # -- Simple modifier methods ---------------------------------------
-
-    def set_usage(self, usage):
-        if usage is None:
-            self.usage = _("%prog [options]")
-        elif usage is SUPPRESS_USAGE:
-            self.usage = None
-        # For backwards compatibility with Optik 1.3 and earlier.
-        elif string.lower(usage)[:7] == "usage: ":
-            self.usage = usage[7:]
-        else:
-            self.usage = usage
-
-    def enable_interspersed_args(self):
-        self.allow_interspersed_args = True
-
-    def disable_interspersed_args(self):
-        self.allow_interspersed_args = False
-
-    def set_process_default_values(self, process):
-        self.process_default_values = process
-
-    def set_default(self, dest, value):
-        self.defaults[dest] = value
-
-    def set_defaults(self, **kwargs):
-        self.defaults.update(kwargs)
-
-    def _get_all_options(self):
-        options = self.option_list[:]
-        for group in self.option_groups:
-            options.extend(group.option_list)
-        return options
-
-    def get_default_values(self):
-        if not self.process_default_values:
-            # Old, pre-Optik 1.5 behaviour.
-            return Values(self.defaults)
-
-        defaults = self.defaults.copy()
-        for option in self._get_all_options():
-            default = defaults.get(option.dest)
-            if isbasestring(default):
-                opt_str = option.get_opt_string()
-                defaults[option.dest] = option.check_value(opt_str, default)
-
-        return Values(defaults)
-
-
-    # -- OptionGroup methods -------------------------------------------
-
-    def add_option_group(self, *args, **kwargs):
-        # XXX lots of overlap with OptionContainer.add_option()
-        if type(args[0]) is types.StringType:
-            group = apply(OptionGroup, (self,) + args, kwargs)
-        elif len(args) == 1 and not kwargs:
-            group = args[0]
-            if not isinstance(group, OptionGroup):
-                raise TypeError, "not an OptionGroup instance: %r" % group
-            if group.parser is not self:
-                raise ValueError, "invalid OptionGroup (wrong parser)"
-        else:
-            raise TypeError, "invalid arguments"
-
-        self.option_groups.append(group)
-        return group
-
-    def get_option_group(self, opt_str):
-        option = (self._short_opt.get(opt_str) or
-                  self._long_opt.get(opt_str))
-        if option and option.container is not self:
-            return option.container
-        return None
-
-
-    # -- Option-parsing methods ----------------------------------------
-
-    def _get_args(self, args):
-        if args is None:
-            return sys.argv[1:]
-        else:
-            return args[:]              # don't modify caller's list
-
-    def parse_args(self, args=None, values=None):
-        """
-        parse_args(args : [string] = sys.argv[1:],
-                   values : Values = None)
-        -> (values : Values, args : [string])
-
-        Parse the command-line options found in 'args' (default:
-        sys.argv[1:]).  Any errors result in a call to 'error()', which
-        by default prints the usage message to stderr and calls
-        sys.exit() with an error message.  On success returns a pair
-        (values, args) where 'values' is an Values instance (with all
-        your option values) and 'args' is the list of arguments left
-        over after parsing options.
-        """
-        rargs = self._get_args(args)
-        if values is None:
-            values = self.get_default_values()
-
-        # Store the halves of the argument list as attributes for the
-        # convenience of callbacks:
-        #   rargs
-        #     the rest of the command-line (the "r" stands for
-        #     "remaining" or "right-hand")
-        #   largs
-        #     the leftover arguments -- ie. what's left after removing
-        #     options and their arguments (the "l" stands for "leftover"
-        #     or "left-hand")
-        self.rargs = rargs
-        self.largs = largs = []
-        self.values = values
-
-        try:
-            stop = self._process_args(largs, rargs, values)
-        except (BadOptionError, OptionValueError), err:
-            self.error(str(err))
-
-        args = largs + rargs
-        return self.check_values(values, args)
-
-    def check_values(self, values, args):
-        """
-        check_values(values : Values, args : [string])
-        -> (values : Values, args : [string])
-
-        Check that the supplied option values and leftover arguments are
-        valid.  Returns the option values and leftover arguments
-        (possibly adjusted, possibly completely new -- whatever you
-        like).  Default implementation just returns the passed-in
-        values; subclasses may override as desired.
-        """
-        return (values, args)
-
-    def _process_args(self, largs, rargs, values):
-        """_process_args(largs : [string],
-                         rargs : [string],
-                         values : Values)
-
-        Process command-line arguments and populate 'values', consuming
-        options and arguments from 'rargs'.  If 'allow_interspersed_args' is
-        false, stop at the first non-option argument.  If true, accumulate any
-        interspersed non-option arguments in 'largs'.
-        """
-        while rargs:
-            arg = rargs[0]
-            # We handle bare "--" explicitly, and bare "-" is handled by the
-            # standard arg handler since the short arg case ensures that the
-            # len of the opt string is greater than 1.
-            if arg == "--":
-                del rargs[0]
-                return
-            elif arg[0:2] == "--":
-                # process a single long option (possibly with value(s))
-                self._process_long_opt(rargs, values)
-            elif arg[:1] == "-" and len(arg) > 1:
-                # process a cluster of short options (possibly with
-                # value(s) for the last one only)
-                self._process_short_opts(rargs, values)
-            elif self.allow_interspersed_args:
-                largs.append(arg)
-                del rargs[0]
-            else:
-                return                  # stop now, leave this arg in rargs
-
-        # Say this is the original argument list:
-        # [arg0, arg1, ..., arg(i-1), arg(i), arg(i+1), ..., arg(N-1)]
-        #                            ^
-        # (we are about to process arg(i)).
-        #
-        # Then rargs is [arg(i), ..., arg(N-1)] and largs is a *subset* of
-        # [arg0, ..., arg(i-1)] (any options and their arguments will have
-        # been removed from largs).
-        #
-        # The while loop will usually consume 1 or more arguments per pass.
-        # If it consumes 1 (eg. arg is an option that takes no arguments),
-        # then after _process_arg() is done the situation is:
-        #
-        #   largs = subset of [arg0, ..., arg(i)]
-        #   rargs = [arg(i+1), ..., arg(N-1)]
-        #
-        # If allow_interspersed_args is false, largs will always be
-        # *empty* -- still a subset of [arg0, ..., arg(i-1)], but
-        # not a very interesting subset!
-
-    def _match_long_opt(self, opt):
-        """_match_long_opt(opt : string) -> string
-
-        Determine which long option string 'opt' matches, ie. which one
-        it is an unambiguous abbrevation for.  Raises BadOptionError if
-        'opt' doesn't unambiguously match any long option string.
-        """
-        return _match_abbrev(opt, self._long_opt)
-
-    def _process_long_opt(self, rargs, values):
-        arg = rargs.pop(0)
-
-        # Value explicitly attached to arg?  Pretend it's the next
-        # argument.
-        if "=" in arg:
-            (opt, next_arg) = string.split(arg, "=", 1)
-            rargs.insert(0, next_arg)
-            had_explicit_value = True
-        else:
-            opt = arg
-            had_explicit_value = False
-
-        opt = self._match_long_opt(opt)
-        option = self._long_opt[opt]
-        if option.takes_value():
-            nargs = option.nargs
-            if len(rargs) < nargs:
-                if nargs == 1:
-                    self.error(_("%s option requires an argument") % opt)
-                else:
-                    self.error(_("%s option requires %d arguments")
-                               % (opt, nargs))
-            elif nargs == 1:
-                value = rargs.pop(0)
-            else:
-                value = tuple(rargs[0:nargs])
-                del rargs[0:nargs]
-
-        elif had_explicit_value:
-            self.error(_("%s option does not take a value") % opt)
-
-        else:
-            value = None
-
-        option.process(opt, value, values, self)
-
-    def _process_short_opts(self, rargs, values):
-        arg = rargs.pop(0)
-        stop = False
-        i = 1
-        for ch in arg[1:]:
-            opt = "-" + ch
-            option = self._short_opt.get(opt)
-            i = i + 1                      # we have consumed a character
-
-            if not option:
-                raise BadOptionError(opt)
-            if option.takes_value():
-                # Any characters left in arg?  Pretend they're the
-                # next arg, and stop consuming characters of arg.
-                if i < len(arg):
-                    rargs.insert(0, arg[i:])
-                    stop = True
-
-                nargs = option.nargs
-                if len(rargs) < nargs:
-                    if nargs == 1:
-                        self.error(_("%s option requires an argument") % opt)
-                    else:
-                        self.error(_("%s option requires %d arguments")
-                                   % (opt, nargs))
-                elif nargs == 1:
-                    value = rargs.pop(0)
-                else:
-                    value = tuple(rargs[0:nargs])
-                    del rargs[0:nargs]
-
-            else:                       # option doesn't take a value
-                value = None
-
-            option.process(opt, value, values, self)
-
-            if stop:
-                break
-
-
-    # -- Feedback methods ----------------------------------------------
-
-    def get_prog_name(self):
-        if self.prog is None:
-            return os.path.basename(sys.argv[0])
-        else:
-            return self.prog
-
-    def expand_prog_name(self, s):
-        return string.replace(s, "%prog", self.get_prog_name())
-
-    def get_description(self):
-        return self.expand_prog_name(self.description)
-
-    def exit(self, status=0, msg=None):
-        if msg:
-            sys.stderr.write(msg)
-        sys.exit(status)
-
-    def error(self, msg):
-        """error(msg : string)
-
-        Print a usage message incorporating 'msg' to stderr and exit.
-        If you override this in a subclass, it should not return -- it
-        should either exit or raise an exception.
-        """
-        self.print_usage(sys.stderr)
-        self.exit(2, "%s: error: %s\n" % (self.get_prog_name(), msg))
-
-    def get_usage(self):
-        if self.usage:
-            return self.formatter.format_usage(
-                self.expand_prog_name(self.usage))
-        else:
-            return ""
-
-    def print_usage(self, file=None):
-        """print_usage(file : file = stdout)
-
-        Print the usage message for the current program (self.usage) to
-        'file' (default stdout).  Any occurence of the string "%prog" in
-        self.usage is replaced with the name of the current program
-        (basename of sys.argv[0]).  Does nothing if self.usage is empty
-        or not defined.
-        """
-        if self.usage:
-            file.write(self.get_usage() + '\n')
-
-    def get_version(self):
-        if self.version:
-            return self.expand_prog_name(self.version)
-        else:
-            return ""
-
-    def print_version(self, file=None):
-        """print_version(file : file = stdout)
-
-        Print the version message for this program (self.version) to
-        'file' (default stdout).  As with print_usage(), any occurence
-        of "%prog" in self.version is replaced by the current program's
-        name.  Does nothing if self.version is empty or undefined.
-        """
-        if self.version:
-            file.write(self.get_version() + '\n')
-
-    def format_option_help(self, formatter=None):
-        if formatter is None:
-            formatter = self.formatter
-        formatter.store_option_strings(self)
-        result = []
-        result.append(formatter.format_heading(_("Options")))
-        formatter.indent()
-        if self.option_list:
-            result.append(OptionContainer.format_option_help(self, formatter))
-            result.append("\n")
-        for group in self.option_groups:
-            result.append(group.format_help(formatter))
-            result.append("\n")
-        formatter.dedent()
-        # Drop the last "\n", or the header if no options or option groups:
-        return string.join(result[:-1], "")
-
-    def format_epilog(self, formatter):
-        return formatter.format_epilog(self.epilog)
-
-    def format_help(self, formatter=None):
-        if formatter is None:
-            formatter = self.formatter
-        result = []
-        if self.usage:
-            result.append(self.get_usage() + "\n")
-        if self.description:
-            result.append(self.format_description(formatter) + "\n")
-        result.append(self.format_option_help(formatter))
-        result.append(self.format_epilog(formatter))
-        return string.join(result, "")
-
-    # used by test suite
-    def _get_encoding(self, file):
-        encoding = getattr(file, "encoding", None)
-        if not encoding:
-            encoding = sys.getdefaultencoding()
-        return encoding
-
-    def print_help(self, file=None):
-        """print_help(file : file = stdout)
-
-        Print an extended help message, listing all options and any
-        help text provided with them, to 'file' (default stdout).
-        """
-        if file is None:
-            file = sys.stdout
-        encoding = self._get_encoding(file)
-        file.write(encode_wrapper(self.format_help(), encoding, "replace"))
-
-# class OptionParser
-
-
-def _match_abbrev(s, wordmap):
-    """_match_abbrev(s : string, wordmap : {string : Option}) -> string
-
-    Return the string key in 'wordmap' for which 's' is an unambiguous
-    abbreviation.  If 's' is found to be ambiguous or doesn't match any of
-    'words', raise BadOptionError.
-    """
-    # Is there an exact match?
-    if wordmap.has_key(s):
-        return s
-    else:
-        # Isolate all words with s as a prefix.
-        possibilities = filter(lambda w, s=s: w[:len(s)] == s, wordmap.keys())
-        # No exact match, so there had better be just one possibility.
-        if len(possibilities) == 1:
-            return possibilities[0]
-        elif not possibilities:
-            raise BadOptionError(s)
-        else:
-            # More than one possible completion: ambiguous prefix.
-            possibilities.sort()
-            raise AmbiguousOptionError(s, possibilities)
-
-
-# Some day, there might be many Option classes.  As of Optik 1.3, the
-# preferred way to instantiate Options is indirectly, via make_option(),
-# which will become a factory function when there are many Option
-# classes.
-make_option = Option
-
-# Local Variables:
-# tab-width:4
-# indent-tabs-mode:nil
-# End:
-# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/engine/SCons/compat/_scons_sets.py b/engine/SCons/compat/_scons_sets.py
index 12dbead..0fde994 100644
--- a/engine/SCons/compat/_scons_sets.py
+++ b/engine/SCons/compat/_scons_sets.py
@@ -54,29 +54,8 @@ what's tested is actually `z in y'.
 # - Raymond Hettinger added a number of speedups and other
 #   improvements.
 
-from __future__ import generators
-try:
-    from itertools import ifilter, ifilterfalse
-except ImportError:
-    # Code to make the module run under Py2.2
-    def ifilter(predicate, iterable):
-        if predicate is None:
-            def predicate(x):
-                return x
-        for x in iterable:
-            if predicate(x):
-                yield x
-    def ifilterfalse(predicate, iterable):
-        if predicate is None:
-            def predicate(x):
-                return x
-        for x in iterable:
-            if not predicate(x):
-                yield x
-    try:
-        True, False
-    except NameError:
-        True, False = (0==0, 0!=0)
+# protect this import from the fixers...
+exec('from itertools import ifilterfalse as filterfalse')
 
 __all__ = ['BaseSet', 'Set', 'ImmutableSet']
 
@@ -91,7 +70,7 @@ class BaseSet(object):
         """This is an abstract class."""
         # Don't call this from a concrete subclass!
         if self.__class__ is BaseSet:
-            raise TypeError, ("BaseSet is an abstract class.  "
+            raise TypeError("BaseSet is an abstract class.  "
                               "Use Set or ImmutableSet.")
 
     # Standard protocols: __len__, __repr__, __str__, __iter__
@@ -110,9 +89,9 @@ class BaseSet(object):
     # __str__ is the same as __repr__
     __str__ = __repr__
 
-    def _repr(self, sorted=False):
-        elements = self._data.keys()
-        if sorted:
+    def _repr(self, sort_them=False):
+        elements = list(self._data.keys())
+        if sort_them:
             elements.sort()
         return '%s(%r)' % (self.__class__.__name__, elements)
 
@@ -121,7 +100,8 @@ class BaseSet(object):
 
         This is the keys iterator for the underlying dict.
         """
-        return self._data.iterkeys()
+        # Wrapping name in () prevents fixer from "fixing" this
+        return (self._data.iterkeys)()
 
     # Three-way comparison is not supported.  However, because __eq__ is
     # tried before __cmp__, if Set x == Set y, x.__eq__(y) returns True and
@@ -129,7 +109,7 @@ class BaseSet(object):
     # case).
 
     def __cmp__(self, other):
-        raise TypeError, "can't compare sets using cmp()"
+        raise TypeError("can't compare sets using cmp()")
 
     # Equality comparisons using the underlying dicts.  Mixed-type comparisons
     # are allowed here, where Set == z for non-Set z always returns False,
@@ -231,7 +211,7 @@ class BaseSet(object):
             little, big = self, other
         else:
             little, big = other, self
-        common = ifilter(big._data.has_key, little)
+        common = iter(filter(big._data.has_key, little))
         return self.__class__(common)
 
     def __xor__(self, other):
@@ -256,9 +236,9 @@ class BaseSet(object):
             otherdata = other._data
         except AttributeError:
             otherdata = Set(other)._data
-        for elt in ifilterfalse(otherdata.has_key, selfdata):
+        for elt in filterfalse(otherdata.has_key, selfdata):
             data[elt] = value
-        for elt in ifilterfalse(selfdata.has_key, otherdata):
+        for elt in filterfalse(selfdata.has_key, otherdata):
             data[elt] = value
         return result
 
@@ -283,7 +263,7 @@ class BaseSet(object):
         except AttributeError:
             otherdata = Set(other)._data
         value = True
-        for elt in ifilterfalse(otherdata.has_key, self):
+        for elt in filterfalse(otherdata.has_key, self):
             data[elt] = value
         return result
 
@@ -309,7 +289,7 @@ class BaseSet(object):
         self._binary_sanity_check(other)
         if len(self) > len(other):  # Fast check for obvious cases
             return False
-        for elt in ifilterfalse(other._data.has_key, self):
+        for elt in filterfalse(other._data.has_key, self):
             return False
         return True
 
@@ -318,7 +298,7 @@ class BaseSet(object):
         self._binary_sanity_check(other)
         if len(self) < len(other):  # Fast check for obvious cases
             return False
-        for elt in ifilterfalse(self._data.has_key, other):
+        for elt in filterfalse(self._data.has_key, other):
             return False
         return True
 
@@ -340,7 +320,7 @@ class BaseSet(object):
         # Check that the other argument to a binary operation is also
         # a set, raising a TypeError otherwise.
         if not isinstance(other, BaseSet):
-            raise TypeError, "Binary operation only permitted between sets"
+            raise TypeError("Binary operation only permitted between sets")
 
     def _compute_hash(self):
         # Calculate hash code for a set by xor'ing the hash codes of
@@ -438,7 +418,7 @@ class Set(BaseSet):
     def __hash__(self):
         """A Set cannot be hashed."""
         # We inherit object.__hash__, so we must deny this explicitly
-        raise TypeError, "Can't hash a Set, only an ImmutableSet."
+        raise TypeError("Can't hash a Set, only an ImmutableSet.")
 
     # In-place union, intersection, differences.
     # Subtle:  The xyz_update() functions deliberately return None,
@@ -501,7 +481,7 @@ class Set(BaseSet):
             other = Set(other)
         if self is other:
             self.clear()
-        for elt in ifilter(data.has_key, other):
+        for elt in filter(data.has_key, other):
             del data[elt]
 
     # Python dict-like mass mutations: update, clear
diff --git a/engine/SCons/compat/_scons_sets15.py b/engine/SCons/compat/_scons_sets15.py
deleted file mode 100644
index bafa009..0000000
--- a/engine/SCons/compat/_scons_sets15.py
+++ /dev/null
@@ -1,176 +0,0 @@
-#
-# A Set class that works all the way back to Python 1.5.  From:
-#
-#       Python Cookbook:  Yet another Set class for Python
-#       http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/106469
-#       Goncalo Rodriques
-#
-#       This is a pure Pythonic implementation of a set class.  The syntax
-#       and methods implemented are, for the most part, borrowed from
-#       PEP 218 by Greg Wilson.
-#
-# Note that this class violates the formal definition of a set() by adding
-# a __getitem__() method so we can iterate over a set's elements under
-# Python 1.5 and 2.1, which don't support __iter__() and iterator types.
-#
-
-import string
-
-class Set:
-    """The set class. It can contain mutable objects."""
-
-    def __init__(self, seq = None):
-        """The constructor. It can take any object giving an iterator as an optional
-        argument to populate the new set."""
-        self.elems = []
-        if seq:
-            for elem in seq:
-                if elem not in self.elems:
-                    hash(elem)
-                    self.elems.append(elem)
-
-    def __str__(self):
-        return "set([%s])" % string.join(map(str, self.elems), ", ")
-
-
-    def copy(self):
-        """Shallow copy of a set object."""
-        return Set(self.elems)
-
-    def __contains__(self, elem):
-        return elem in self.elems
-
-    def __len__(self):
-        return len(self.elems)
-
-    def __getitem__(self, index):
-        # Added so that Python 1.5 can iterate over the elements.
-        # The cookbook recipe's author didn't like this because there
-        # really isn't any order in a set object, but this is necessary
-        # to make the class work well enough for our purposes.
-        return self.elems[index]
-
-    def items(self):
-        """Returns a list of the elements in the set."""
-        return self.elems
-
-    def add(self, elem):
-        """Add one element to the set."""
-        if elem not in self.elems:
-            hash(elem)
-            self.elems.append(elem)
-
-    def remove(self, elem):
-        """Remove an element from the set. Return an error if elem is not in the set."""
-        try:
-            self.elems.remove(elem)
-        except ValueError:
-            raise LookupError, "Object %s is not a member of the set." % str(elem)
-
-    def discard(self, elem):
-        """Remove an element from the set. Do nothing if elem is not in the set."""
-        try:
-            self.elems.remove(elem)
-        except ValueError:
-            pass
-
-    def sort(self, func=cmp):
-        self.elems.sort(func)
-
-    #Define an iterator for a set.
-    def __iter__(self):
-        return iter(self.elems)
-
-    #The basic binary operations with sets.
-    def __or__(self, other):
-        """Union of two sets."""
-        ret = self.copy()
-        for elem in other.elems:
-            if elem not in ret:
-                ret.elems.append(elem)
-        return ret
-
-    def __sub__(self, other):
-        """Difference of two sets."""
-        ret = self.copy()
-        for elem in other.elems:
-            ret.discard(elem)
-        return ret
-
-    def __and__(self, other):
-        """Intersection of two sets."""
-        ret = Set()
-        for elem in self.elems:
-            if elem in other.elems:
-                ret.elems.append(elem)
-        return ret
-
-    def __add__(self, other):
-        """Symmetric difference of two sets."""
-        ret = Set()
-        temp = other.copy()
-        for elem in self.elems:
-            if elem in temp.elems:
-                temp.elems.remove(elem)
-            else:
-                ret.elems.append(elem)
-        #Add remaining elements.
-        for elem in temp.elems:
-                ret.elems.append(elem)
-        return ret
-
-    def __mul__(self, other):
-        """Cartesian product of two sets."""
-        ret = Set()
-        for elemself in self.elems:
-            x = map(lambda other, s=elemself: (s, other), other.elems)
-            ret.elems.extend(x)
-        return ret
-
-    #Some of the binary comparisons.
-    def __lt__(self, other):
-        """Returns 1 if the lhs set is contained but not equal to the rhs set."""
-        if len(self.elems) < len(other.elems):
-            temp = other.copy()
-            for elem in self.elems:
-                if elem in temp.elems:
-                    temp.remove(elem)
-                else:
-                    return 0
-            return len(temp.elems) == 0
-        else:
-            return 0
-
-    def __le__(self, other):
-        """Returns 1 if the lhs set is contained in the rhs set."""
-        if len(self.elems) <= len(other.elems):
-            ret = 1
-            for elem in self.elems:
-                if elem not in other.elems:
-                    ret = 0
-                    break
-            return ret
-        else:
-            return 0
-
-    def __eq__(self, other):
-        """Returns 1 if the sets are equal."""
-        if len(self.elems) != len(other.elems):
-            return 0
-        else:
-            return len(self - other) == 0
-
-    def __cmp__(self, other):
-        """Returns 1 if the sets are equal."""
-        if self.__lt__(other):
-            return -1
-        elif other.__lt__(self):
-            return 1
-        else:
-            return 0
-
-# Local Variables:
-# tab-width:4
-# indent-tabs-mode:nil
-# End:
-# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/engine/SCons/compat/_scons_shlex.py b/engine/SCons/compat/_scons_shlex.py
deleted file mode 100644
index 9e30a01..0000000
--- a/engine/SCons/compat/_scons_shlex.py
+++ /dev/null
@@ -1,325 +0,0 @@
-# -*- coding: iso-8859-1 -*-
-"""A lexical analyzer class for simple shell-like syntaxes."""
-
-# Module and documentation by Eric S. Raymond, 21 Dec 1998
-# Input stacking and error message cleanup added by ESR, March 2000
-# push_source() and pop_source() made explicit by ESR, January 2001.
-# Posix compliance, split(), string arguments, and
-# iterator interface by Gustavo Niemeyer, April 2003.
-
-import os.path
-import sys
-#from collections import deque
-
-class deque:
-    def __init__(self):
-        self.data = []
-    def __len__(self):
-        return len(self.data)
-    def appendleft(self, item):
-        self.data.insert(0, item)
-    def popleft(self):
-        return self.data.pop(0)
-
-try:
-    basestring
-except NameError:
-    import types
-    def is_basestring(s):
-        return type(s) is types.StringType
-else:
-    def is_basestring(s):
-        return isinstance(s, basestring)
-
-try:
-    from cStringIO import StringIO
-except ImportError:
-    from StringIO import StringIO
-
-__all__ = ["shlex", "split"]
-
-class shlex:
-    "A lexical analyzer class for simple shell-like syntaxes."
-    def __init__(self, instream=None, infile=None, posix=False):
-        if is_basestring(instream):
-            instream = StringIO(instream)
-        if instream is not None:
-            self.instream = instream
-            self.infile = infile
-        else:
-            self.instream = sys.stdin
-            self.infile = None
-        self.posix = posix
-        if posix:
-            self.eof = None
-        else:
-            self.eof = ''
-        self.commenters = '#'
-        self.wordchars = ('abcdfeghijklmnopqrstuvwxyz'
-                          'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_')
-        if self.posix:
-            self.wordchars = self.wordchars + ('ßàáâãäåæçèéêëìíîïðñòóôõöøùúûüýþÿ'
-                               'ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞ')
-        self.whitespace = ' \t\r\n'
-        self.whitespace_split = False
-        self.quotes = '\'"'
-        self.escape = '\\'
-        self.escapedquotes = '"'
-        self.state = ' '
-        self.pushback = deque()
-        self.lineno = 1
-        self.debug = 0
-        self.token = ''
-        self.filestack = deque()
-        self.source = None
-        if self.debug:
-            print 'shlex: reading from %s, line %d' \
-                  % (self.instream, self.lineno)
-
-    def push_token(self, tok):
-        "Push a token onto the stack popped by the get_token method"
-        if self.debug >= 1:
-            print "shlex: pushing token " + repr(tok)
-        self.pushback.appendleft(tok)
-
-    def push_source(self, newstream, newfile=None):
-        "Push an input source onto the lexer's input source stack."
-        if is_basestring(newstream):
-            newstream = StringIO(newstream)
-        self.filestack.appendleft((self.infile, self.instream, self.lineno))
-        self.infile = newfile
-        self.instream = newstream
-        self.lineno = 1
-        if self.debug:
-            if newfile is not None:
-                print 'shlex: pushing to file %s' % (self.infile,)
-            else:
-                print 'shlex: pushing to stream %s' % (self.instream,)
-
-    def pop_source(self):
-        "Pop the input source stack."
-        self.instream.close()
-        (self.infile, self.instream, self.lineno) = self.filestack.popleft()
-        if self.debug:
-            print 'shlex: popping to %s, line %d' \
-                  % (self.instream, self.lineno)
-        self.state = ' '
-
-    def get_token(self):
-        "Get a token from the input stream (or from stack if it's nonempty)"
-        if self.pushback:
-            tok = self.pushback.popleft()
-            if self.debug >= 1:
-                print "shlex: popping token " + repr(tok)
-            return tok
-        # No pushback.  Get a token.
-        raw = self.read_token()
-        # Handle inclusions
-        if self.source is not None:
-            while raw == self.source:
-                spec = self.sourcehook(self.read_token())
-                if spec:
-                    (newfile, newstream) = spec
-                    self.push_source(newstream, newfile)
-                raw = self.get_token()
-        # Maybe we got EOF instead?
-        while raw == self.eof:
-            if not self.filestack:
-                return self.eof
-            else:
-                self.pop_source()
-                raw = self.get_token()
-        # Neither inclusion nor EOF
-        if self.debug >= 1:
-            if raw != self.eof:
-                print "shlex: token=" + repr(raw)
-            else:
-                print "shlex: token=EOF"
-        return raw
-
-    def read_token(self):
-        quoted = False
-        escapedstate = ' '
-        while True:
-            nextchar = self.instream.read(1)
-            if nextchar == '\n':
-                self.lineno = self.lineno + 1
-            if self.debug >= 3:
-                print "shlex: in state", repr(self.state), \
-                      "I see character:", repr(nextchar)
-            if self.state is None:
-                self.token = ''        # past end of file
-                break
-            elif self.state == ' ':
-                if not nextchar:
-                    self.state = None  # end of file
-                    break
-                elif nextchar in self.whitespace:
-                    if self.debug >= 2:
-                        print "shlex: I see whitespace in whitespace state"
-                    if self.token or (self.posix and quoted):
-                        break   # emit current token
-                    else:
-                        continue
-                elif nextchar in self.commenters:
-                    self.instream.readline()
-                    self.lineno = self.lineno + 1
-                elif self.posix and nextchar in self.escape:
-                    escapedstate = 'a'
-                    self.state = nextchar
-                elif nextchar in self.wordchars:
-                    self.token = nextchar
-                    self.state = 'a'
-                elif nextchar in self.quotes:
-                    if not self.posix:
-                        self.token = nextchar
-                    self.state = nextchar
-                elif self.whitespace_split:
-                    self.token = nextchar
-                    self.state = 'a'
-                else:
-                    self.token = nextchar
-                    if self.token or (self.posix and quoted):
-                        break   # emit current token
-                    else:
-                        continue
-            elif self.state in self.quotes:
-                quoted = True
-                if not nextchar:      # end of file
-                    if self.debug >= 2:
-                        print "shlex: I see EOF in quotes state"
-                    # XXX what error should be raised here?
-                    raise ValueError, "No closing quotation"
-                if nextchar == self.state:
-                    if not self.posix:
-                        self.token = self.token + nextchar
-                        self.state = ' '
-                        break
-                    else:
-                        self.state = 'a'
-                elif self.posix and nextchar in self.escape and \
-                     self.state in self.escapedquotes:
-                    escapedstate = self.state
-                    self.state = nextchar
-                else:
-                    self.token = self.token + nextchar
-            elif self.state in self.escape:
-                if not nextchar:      # end of file
-                    if self.debug >= 2:
-                        print "shlex: I see EOF in escape state"
-                    # XXX what error should be raised here?
-                    raise ValueError, "No escaped character"
-                # In posix shells, only the quote itself or the escape
-                # character may be escaped within quotes.
-                if escapedstate in self.quotes and \
-                   nextchar != self.state and nextchar != escapedstate:
-                    self.token = self.token + self.state
-                self.token = self.token + nextchar
-                self.state = escapedstate
-            elif self.state == 'a':
-                if not nextchar:
-                    self.state = None   # end of file
-                    break
-                elif nextchar in self.whitespace:
-                    if self.debug >= 2:
-                        print "shlex: I see whitespace in word state"
-                    self.state = ' '
-                    if self.token or (self.posix and quoted):
-                        break   # emit current token
-                    else:
-                        continue
-                elif nextchar in self.commenters:
-                    self.instream.readline()
-                    self.lineno = self.lineno + 1
-                    if self.posix:
-                        self.state = ' '
-                        if self.token or (self.posix and quoted):
-                            break   # emit current token
-                        else:
-                            continue
-                elif self.posix and nextchar in self.quotes:
-                    self.state = nextchar
-                elif self.posix and nextchar in self.escape:
-                    escapedstate = 'a'
-                    self.state = nextchar
-                elif nextchar in self.wordchars or nextchar in self.quotes \
-                    or self.whitespace_split:
-                    self.token = self.token + nextchar
-                else:
-                    self.pushback.appendleft(nextchar)
-                    if self.debug >= 2:
-                        print "shlex: I see punctuation in word state"
-                    self.state = ' '
-                    if self.token:
-                        break   # emit current token
-                    else:
-                        continue
-        result = self.token
-        self.token = ''
-        if self.posix and not quoted and result == '':
-            result = None
-        if self.debug > 1:
-            if result:
-                print "shlex: raw token=" + repr(result)
-            else:
-                print "shlex: raw token=EOF"
-        return result
-
-    def sourcehook(self, newfile):
-        "Hook called on a filename to be sourced."
-        if newfile[0] == '"':
-            newfile = newfile[1:-1]
-        # This implements cpp-like semantics for relative-path inclusion.
-        if is_basestring(self.infile) and not os.path.isabs(newfile):
-            newfile = os.path.join(os.path.dirname(self.infile), newfile)
-        return (newfile, open(newfile, "r"))
-
-    def error_leader(self, infile=None, lineno=None):
-        "Emit a C-compiler-like, Emacs-friendly error-message leader."
-        if infile is None:
-            infile = self.infile
-        if lineno is None:
-            lineno = self.lineno
-        return "\"%s\", line %d: " % (infile, lineno)
-
-    def __iter__(self):
-        return self
-
-    def next(self):
-        token = self.get_token()
-        if token == self.eof:
-            raise StopIteration
-        return token
-
-def split(s, comments=False):
-    lex = shlex(s, posix=True)
-    lex.whitespace_split = True
-    if not comments:
-        lex.commenters = ''
-    #return list(lex)
-    result = []
-    while True:
-        token = lex.get_token()
-        if token == lex.eof:
-            break
-        result.append(token)
-    return result
-
-if __name__ == '__main__':
-    if len(sys.argv) == 1:
-        lexer = shlex()
-    else:
-        file = sys.argv[1]
-        lexer = shlex(open(file), file)
-    while 1:
-        tt = lexer.get_token()
-        if tt:
-            print "Token: " + repr(tt)
-        else:
-            break
-
-# Local Variables:
-# tab-width:4
-# indent-tabs-mode:nil
-# End:
-# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/engine/SCons/compat/_scons_subprocess.py b/engine/SCons/compat/_scons_subprocess.py
index ccd403a..eebe53d 100644
--- a/engine/SCons/compat/_scons_subprocess.py
+++ b/engine/SCons/compat/_scons_subprocess.py
@@ -356,7 +356,6 @@ import sys
 mswindows = (sys.platform == "win32")
 
 import os
-import string
 import types
 import traceback
 
@@ -384,13 +383,13 @@ if mswindows:
     try:
         # Try to get _subprocess
         from _subprocess import *
-        class STARTUPINFO:
+        class STARTUPINFO(object):
             dwFlags = 0
             hStdInput = None
             hStdOutput = None
             hStdError = None
             wShowWindow = 0
-        class pywintypes:
+        class pywintypes(object):
             error = IOError
     except ImportError:
         # If not there, then drop back to requiring pywin32
@@ -434,18 +433,11 @@ except KeyboardInterrupt:
 except:
     MAXFD = 256
 
-# True/False does not exist on 2.2.0
-try:
-    False
-except NameError:
-    False = 0
-    True = 1
-
 try:
     isinstance(1, int)
 except TypeError:
     def is_int(obj):
-        return type(obj) == type(1)
+        return isinstance(obj, type(1))
     def is_int_or_long(obj):
         return type(obj) in (type(1), type(1L))
 else:
@@ -458,20 +450,17 @@ try:
     types.StringTypes
 except AttributeError:
     try:
-        types.StringTypes = (types.StringType, types.UnicodeType)
-    except AttributeError:
-        types.StringTypes = (types.StringType,)
-    def is_string(obj):
-        return type(obj) in types.StringTypes
-else:
-    def is_string(obj):
-        return isinstance(obj, types.StringTypes)
+        types.StringTypes = (str, unicode)
+    except NameError:
+        types.StringTypes = (str,)
+def is_string(obj):
+    return isinstance(obj, types.StringTypes)
 
 _active = []
 
 def _cleanup():
     for inst in _active[:]:
-        if inst.poll(_deadstate=sys.maxint) >= 0:
+        if inst.poll(_deadstate=sys.maxsize) >= 0:
             try:
                 _active.remove(inst)
             except ValueError:
@@ -504,7 +493,7 @@ def check_call(*popenargs, **kwargs):
 
     check_call(["ls", "-l"])
     """
-    retcode = apply(call, popenargs, kwargs)
+    retcode = call(*popenargs, **kwargs)
     cmd = kwargs.get("args")
     if cmd is None:
         cmd = popenargs[0]
@@ -578,14 +567,7 @@ def list2cmdline(seq):
             result.extend(bs_buf)
             result.append('"')
 
-    return string.join(result, '')
-
-
-try:
-    object
-except NameError:
-    class object:
-        pass
+    return ''.join(result)
 
 class Popen(object):
     def __init__(self, args, bufsize=0, executable=None,
@@ -674,7 +656,7 @@ class Popen(object):
             # We didn't get to successfully create a child process.
             return
         # In case the child hasn't been waited on, check if it's done.
-        self.poll(_deadstate=sys.maxint)
+        self.poll(_deadstate=sys.maxsize)
         if self.returncode is None and _active is not None:
             # Child is still running, keep us alive until we can wait on it.
             _active.append(self)
@@ -853,7 +835,7 @@ class Popen(object):
                 # a subclass of OSError.  FIXME: We should really
                 # translate errno using _sys_errlist (or simliar), but
                 # how can this be done from Python?
-                raise apply(WindowsError, e.args)
+                raise WindowsError(*e.args)
 
             # Retain the process handle, but close the thread handle
             self._child_created = True
@@ -1003,7 +985,7 @@ class Popen(object):
 
 
         def _close_fds(self, but):
-            for i in xrange(3, MAXFD):
+            for i in range(3, MAXFD):
                 if i == but:
                     continue
                 try:
@@ -1100,7 +1082,7 @@ class Popen(object):
                     exc_lines = traceback.format_exception(exc_type,
                                                            exc_value,
                                                            tb)
-                    exc_value.child_traceback = string.join(exc_lines, '')
+                    exc_value.child_traceback = ''.join(exc_lines)
                     os.write(errpipe_write, pickle.dumps(exc_value))
 
                 # This exitcode won't be reported to applications, so it
@@ -1187,7 +1169,8 @@ class Popen(object):
                     # When select has indicated that the file is writable,
                     # we can write up to PIPE_BUF bytes without risk
                     # blocking.  POSIX defines PIPE_BUF >= 512
-                    bytes_written = os.write(self.stdin.fileno(), buffer(input, input_offset, 512))
+                    m = memoryview(input)[input_offset:input_offset+512]
+                    bytes_written = os.write(self.stdin.fileno(), m)
                     input_offset = input_offset + bytes_written
                     if input_offset >= len(input):
                         self.stdin.close()
@@ -1209,9 +1192,9 @@ class Popen(object):
 
             # All data exchanged.  Translate lists into strings.
             if stdout is not None:
-                stdout = string.join(stdout, '')
+                stdout = ''.join(stdout)
             if stderr is not None:
-                stderr = string.join(stderr, '')
+                stderr = ''.join(stderr)
 
             # Translate newlines, if requested.  We cannot let the file
             # object do the translation: It is based on stdio, which is
diff --git a/engine/SCons/compat/_scons_textwrap.py b/engine/SCons/compat/_scons_textwrap.py
deleted file mode 100644
index 81781af..0000000
--- a/engine/SCons/compat/_scons_textwrap.py
+++ /dev/null
@@ -1,382 +0,0 @@
-"""Text wrapping and filling.
-"""
-
-# Copyright (C) 1999-2001 Gregory P. Ward.
-# Copyright (C) 2002, 2003 Python Software Foundation.
-# Written by Greg Ward <gward@python.net>
-
-__revision__ = "$Id: textwrap.py,v 1.32.8.2 2004/05/13 01:48:15 gward Exp $"
-
-import string, re
-
-try:
-   unicode
-except NameError:
-   class unicode:
-       pass
-
-# Do the right thing with boolean values for all known Python versions
-# (so this module can be copied to projects that don't depend on Python
-# 2.3, e.g. Optik and Docutils).
-try:
-    True, False
-except NameError:
-    (True, False) = (1, 0)
-
-__all__ = ['TextWrapper', 'wrap', 'fill']
-
-# Hardcode the recognized whitespace characters to the US-ASCII
-# whitespace characters.  The main reason for doing this is that in
-# ISO-8859-1, 0xa0 is non-breaking whitespace, so in certain locales
-# that character winds up in string.whitespace.  Respecting
-# string.whitespace in those cases would 1) make textwrap treat 0xa0 the
-# same as any other whitespace char, which is clearly wrong (it's a
-# *non-breaking* space), 2) possibly cause problems with Unicode,
-# since 0xa0 is not in range(128).
-_whitespace = '\t\n\x0b\x0c\r '
-
-class TextWrapper:
-    """
-    Object for wrapping/filling text.  The public interface consists of
-    the wrap() and fill() methods; the other methods are just there for
-    subclasses to override in order to tweak the default behaviour.
-    If you want to completely replace the main wrapping algorithm,
-    you'll probably have to override _wrap_chunks().
-
-    Several instance attributes control various aspects of wrapping:
-      width (default: 70)
-        the maximum width of wrapped lines (unless break_long_words
-        is false)
-      initial_indent (default: "")
-        string that will be prepended to the first line of wrapped
-        output.  Counts towards the line's width.
-      subsequent_indent (default: "")
-        string that will be prepended to all lines save the first
-        of wrapped output; also counts towards each line's width.
-      expand_tabs (default: true)
-        Expand tabs in input text to spaces before further processing.
-        Each tab will become 1 .. 8 spaces, depending on its position in
-        its line.  If false, each tab is treated as a single character.
-      replace_whitespace (default: true)
-        Replace all whitespace characters in the input text by spaces
-        after tab expansion.  Note that if expand_tabs is false and
-        replace_whitespace is true, every tab will be converted to a
-        single space!
-      fix_sentence_endings (default: false)
-        Ensure that sentence-ending punctuation is always followed
-        by two spaces.  Off by default because the algorithm is
-        (unavoidably) imperfect.
-      break_long_words (default: true)
-        Break words longer than 'width'.  If false, those words will not
-        be broken, and some lines might be longer than 'width'.
-    """
-
-    whitespace_trans = string.maketrans(_whitespace, ' ' * len(_whitespace))
-
-    unicode_whitespace_trans = {}
-    try:
-        uspace = eval("ord(u' ')")
-    except SyntaxError:
-        # Python1.5 doesn't understand u'' syntax, in which case we
-        # won't actually use the unicode translation below, so it
-        # doesn't matter what value we put in the table.
-        uspace = ord(' ')
-    for x in map(ord, _whitespace):
-        unicode_whitespace_trans[x] = uspace
-
-    # This funky little regex is just the trick for splitting
-    # text up into word-wrappable chunks.  E.g.
-    #   "Hello there -- you goof-ball, use the -b option!"
-    # splits into
-    #   Hello/ /there/ /--/ /you/ /goof-/ball,/ /use/ /the/ /-b/ /option!
-    # (after stripping out empty strings).
-    try:
-        wordsep_re = re.compile(r'(\s+|'                  # any whitespace
-                                r'[^\s\w]*\w{2,}-(?=\w{2,})|' # hyphenated words
-                                r'(?<=[\w\!\"\'\&\.\,\?])-{2,}(?=\w))')   # em-dash
-    except re.error:
-        # Pre-2.0 Python versions don't have the (?<= negative look-behind
-        # assertion.  It mostly doesn't matter for the simple input
-        # SCons is going to give it, so just leave it out.
-        wordsep_re = re.compile(r'(\s+|'                    # any whitespace
-                                r'-*\w{2,}-(?=\w{2,}))')    # hyphenated words
-
-    # XXX will there be a locale-or-charset-aware version of
-    # string.lowercase in 2.3?
-    sentence_end_re = re.compile(r'[%s]'              # lowercase letter
-                                 r'[\.\!\?]'          # sentence-ending punct.
-                                 r'[\"\']?'           # optional end-of-quote
-                                 % string.lowercase)
-
-
-    def __init__(self,
-                 width=70,
-                 initial_indent="",
-                 subsequent_indent="",
-                 expand_tabs=True,
-                 replace_whitespace=True,
-                 fix_sentence_endings=False,
-                 break_long_words=True):
-        self.width = width
-        self.initial_indent = initial_indent
-        self.subsequent_indent = subsequent_indent
-        self.expand_tabs = expand_tabs
-        self.replace_whitespace = replace_whitespace
-        self.fix_sentence_endings = fix_sentence_endings
-        self.break_long_words = break_long_words
-
-
-    # -- Private methods -----------------------------------------------
-    # (possibly useful for subclasses to override)
-
-    def _munge_whitespace(self, text):
-        """_munge_whitespace(text : string) -> string
-
-        Munge whitespace in text: expand tabs and convert all other
-        whitespace characters to spaces.  Eg. " foo\tbar\n\nbaz"
-        becomes " foo    bar  baz".
-        """
-        if self.expand_tabs:
-            text = string.expandtabs(text)
-        if self.replace_whitespace:
-            if type(text) == type(''):
-                text = string.translate(text, self.whitespace_trans)
-            elif isinstance(text, unicode):
-                text = string.translate(text, self.unicode_whitespace_trans)
-        return text
-
-
-    def _split(self, text):
-        """_split(text : string) -> [string]
-
-        Split the text to wrap into indivisible chunks.  Chunks are
-        not quite the same as words; see wrap_chunks() for full
-        details.  As an example, the text
-          Look, goof-ball -- use the -b option!
-        breaks into the following chunks:
-          'Look,', ' ', 'goof-', 'ball', ' ', '--', ' ',
-          'use', ' ', 'the', ' ', '-b', ' ', 'option!'
-        """
-        chunks = self.wordsep_re.split(text)
-        chunks = filter(None, chunks)
-        return chunks
-
-    def _fix_sentence_endings(self, chunks):
-        """_fix_sentence_endings(chunks : [string])
-
-        Correct for sentence endings buried in 'chunks'.  Eg. when the
-        original text contains "... foo.\nBar ...", munge_whitespace()
-        and split() will convert that to [..., "foo.", " ", "Bar", ...]
-        which has one too few spaces; this method simply changes the one
-        space to two.
-        """
-        i = 0
-        pat = self.sentence_end_re
-        while i < len(chunks)-1:
-            if chunks[i+1] == " " and pat.search(chunks[i]):
-                chunks[i+1] = "  "
-                i = i + 2
-            else:
-                i = i + 1
-
-    def _handle_long_word(self, chunks, cur_line, cur_len, width):
-        """_handle_long_word(chunks : [string],
-                             cur_line : [string],
-                             cur_len : int, width : int)
-
-        Handle a chunk of text (most likely a word, not whitespace) that
-        is too long to fit in any line.
-        """
-        space_left = max(width - cur_len, 1)
-
-        # If we're allowed to break long words, then do so: put as much
-        # of the next chunk onto the current line as will fit.
-        if self.break_long_words:
-            cur_line.append(chunks[0][0:space_left])
-            chunks[0] = chunks[0][space_left:]
-
-        # Otherwise, we have to preserve the long word intact.  Only add
-        # it to the current line if there's nothing already there --
-        # that minimizes how much we violate the width constraint.
-        elif not cur_line:
-            cur_line.append(chunks.pop(0))
-
-        # If we're not allowed to break long words, and there's already
-        # text on the current line, do nothing.  Next time through the
-        # main loop of _wrap_chunks(), we'll wind up here again, but
-        # cur_len will be zero, so the next line will be entirely
-        # devoted to the long word that we can't handle right now.
-
-    def _wrap_chunks(self, chunks):
-        """_wrap_chunks(chunks : [string]) -> [string]
-
-        Wrap a sequence of text chunks and return a list of lines of
-        length 'self.width' or less.  (If 'break_long_words' is false,
-        some lines may be longer than this.)  Chunks correspond roughly
-        to words and the whitespace between them: each chunk is
-        indivisible (modulo 'break_long_words'), but a line break can
-        come between any two chunks.  Chunks should not have internal
-        whitespace; ie. a chunk is either all whitespace or a "word".
-        Whitespace chunks will be removed from the beginning and end of
-        lines, but apart from that whitespace is preserved.
-        """
-        lines = []
-        if self.width <= 0:
-            raise ValueError("invalid width %r (must be > 0)" % self.width)
-
-        while chunks:
-
-            # Start the list of chunks that will make up the current line.
-            # cur_len is just the length of all the chunks in cur_line.
-            cur_line = []
-            cur_len = 0
-
-            # Figure out which static string will prefix this line.
-            if lines:
-                indent = self.subsequent_indent
-            else:
-                indent = self.initial_indent
-
-            # Maximum width for this line.
-            width = self.width - len(indent)
-
-            # First chunk on line is whitespace -- drop it, unless this
-            # is the very beginning of the text (ie. no lines started yet).
-            if string.strip(chunks[0]) == '' and lines:
-                del chunks[0]
-
-            while chunks:
-                l = len(chunks[0])
-
-                # Can at least squeeze this chunk onto the current line.
-                if cur_len + l <= width:
-                    cur_line.append(chunks.pop(0))
-                    cur_len = cur_len + l
-
-                # Nope, this line is full.
-                else:
-                    break
-
-            # The current line is full, and the next chunk is too big to
-            # fit on *any* line (not just this one).
-            if chunks and len(chunks[0]) > width:
-                self._handle_long_word(chunks, cur_line, cur_len, width)
-
-            # If the last chunk on this line is all whitespace, drop it.
-            if cur_line and string.strip(cur_line[-1]) == '':
-                del cur_line[-1]
-
-            # Convert current line back to a string and store it in list
-            # of all lines (return value).
-            if cur_line:
-                lines.append(indent + string.join(cur_line, ''))
-
-        return lines
-
-
-    # -- Public interface ----------------------------------------------
-
-    def wrap(self, text):
-        """wrap(text : string) -> [string]
-
-        Reformat the single paragraph in 'text' so it fits in lines of
-        no more than 'self.width' columns, and return a list of wrapped
-        lines.  Tabs in 'text' are expanded with string.expandtabs(),
-        and all other whitespace characters (including newline) are
-        converted to space.
-        """
-        text = self._munge_whitespace(text)
-        indent = self.initial_indent
-        chunks = self._split(text)
-        if self.fix_sentence_endings:
-            self._fix_sentence_endings(chunks)
-        return self._wrap_chunks(chunks)
-
-    def fill(self, text):
-        """fill(text : string) -> string
-
-        Reformat the single paragraph in 'text' to fit in lines of no
-        more than 'self.width' columns, and return a new string
-        containing the entire wrapped paragraph.
-        """
-        return string.join(self.wrap(text), "\n")
-
-
-# -- Convenience interface ---------------------------------------------
-
-def wrap(text, width=70, **kwargs):
-    """Wrap a single paragraph of text, returning a list of wrapped lines.
-
-    Reformat the single paragraph in 'text' so it fits in lines of no
-    more than 'width' columns, and return a list of wrapped lines.  By
-    default, tabs in 'text' are expanded with string.expandtabs(), and
-    all other whitespace characters (including newline) are converted to
-    space.  See TextWrapper class for available keyword args to customize
-    wrapping behaviour.
-    """
-    kw = kwargs.copy()
-    kw['width'] = width
-    w = apply(TextWrapper, (), kw)
-    return w.wrap(text)
-
-def fill(text, width=70, **kwargs):
-    """Fill a single paragraph of text, returning a new string.
-
-    Reformat the single paragraph in 'text' to fit in lines of no more
-    than 'width' columns, and return a new string containing the entire
-    wrapped paragraph.  As with wrap(), tabs are expanded and other
-    whitespace characters converted to space.  See TextWrapper class for
-    available keyword args to customize wrapping behaviour.
-    """
-    kw = kwargs.copy()
-    kw['width'] = width
-    w = apply(TextWrapper, (), kw)
-    return w.fill(text)
-
-
-# -- Loosely related functionality -------------------------------------
-
-def dedent(text):
-    """dedent(text : string) -> string
-
-    Remove any whitespace than can be uniformly removed from the left
-    of every line in `text`.
-
-    This can be used e.g. to make triple-quoted strings line up with
-    the left edge of screen/whatever, while still presenting it in the
-    source code in indented form.
-
-    For example:
-
-        def test():
-            # end first line with \ to avoid the empty line!
-            s = '''\
-            hello
-              world
-            '''
-            print repr(s)          # prints '    hello\n      world\n    '
-            print repr(dedent(s))  # prints 'hello\n  world\n'
-    """
-    lines = text.expandtabs().split('\n')
-    margin = None
-    for line in lines:
-        content = line.lstrip()
-        if not content:
-            continue
-        indent = len(line) - len(content)
-        if margin is None:
-            margin = indent
-        else:
-            margin = min(margin, indent)
-
-    if margin is not None and margin > 0:
-        for i in range(len(lines)):
-            lines[i] = lines[i][margin:]
-
-    return string.join(lines, '\n')
-
-# Local Variables:
-# tab-width:4
-# indent-tabs-mode:nil
-# End:
-# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/engine/SCons/cpp.py b/engine/SCons/cpp.py
index 485ba6e..ef09e11 100644
--- a/engine/SCons/cpp.py
+++ b/engine/SCons/cpp.py
@@ -21,20 +21,16 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/cpp.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/cpp.py 5023 2010/06/14 22:05:46 scons"
 
 __doc__ = """
 SCons C Pre-Processor module
 """
-
-# TODO(1.5):  remove this import
-# This module doesn't use anything from SCons by name, but we import SCons
-# here to pull in zip() from the SCons.compat layer for early Pythons.
-import SCons
+#TODO 2.3 and before has no sorted()
+import SCons.compat
 
 import os
 import re
-import string
 
 #
 # First "subsystem" of regular expressions that we set up:
@@ -91,7 +87,7 @@ del op_list
 override = {
     'if'                        : 'if(?!def)',
 }
-l = map(lambda x, o=override: o.get(x, x), Table.keys())
+l = [override.get(x, x) for x in Table.keys()]
 
 
 # Turn the list of expressions into one big honkin' regular expression
@@ -99,7 +95,7 @@ l = map(lambda x, o=override: o.get(x, x), Table.keys())
 # a list of tuples, one for each preprocessor line.  The preprocessor
 # directive will be the first element in each tuple, and the rest of
 # the line will be the second element.
-e = '^\s*#\s*(' + string.join(l, '|') + ')(.*)$'
+e = '^\s*#\s*(' + '|'.join(l) + ')(.*)$'
 
 # And last but not least, compile the expression.
 CPP_Expression = re.compile(e, re.M)
@@ -126,7 +122,7 @@ CPP_to_Python_Ops_Dict = {
     '\r'        : '',
 }
 
-CPP_to_Python_Ops_Sub = lambda m, d=CPP_to_Python_Ops_Dict: d[m.group(0)]
+CPP_to_Python_Ops_Sub = lambda m: CPP_to_Python_Ops_Dict[m.group(0)]
 
 # We have to sort the keys by length so that longer expressions
 # come *before* shorter expressions--in particular, "!=" must
@@ -134,12 +130,11 @@ CPP_to_Python_Ops_Sub = lambda m, d=CPP_to_Python_Ops_Dict: d[m.group(0)]
 # re module, as late as version 2.2.2, empirically matches the
 # "!" in "!=" first, instead of finding the longest match.
 # What's up with that?
-l = CPP_to_Python_Ops_Dict.keys()
-l.sort(lambda a, b: cmp(len(b), len(a)))
+l = sorted(CPP_to_Python_Ops_Dict.keys(), key=lambda a: len(a), reverse=True)
 
 # Turn the list of keys into one regular expression that will allow us
 # to substitute all of the operators at once.
-expr = string.join(map(re.escape, l), '|')
+expr = '|'.join(map(re.escape, l))
 
 # ...and compile the expression.
 CPP_to_Python_Ops_Expression = re.compile(expr)
@@ -147,12 +142,12 @@ CPP_to_Python_Ops_Expression = re.compile(expr)
 # A separate list of expressions to be evaluated and substituted
 # sequentially, not all at once.
 CPP_to_Python_Eval_List = [
-    ['defined\s+(\w+)',         '__dict__.has_key("\\1")'],
-    ['defined\s*\((\w+)\)',     '__dict__.has_key("\\1")'],
+    ['defined\s+(\w+)',         '"\\1" in __dict__'],
+    ['defined\s*\((\w+)\)',     '"\\1" in __dict__'],
     ['/\*.*\*/',                ''],
     ['/\*.*',                   ''],
     ['//.*',                    ''],
-    ['(0x[0-9A-Fa-f]*)[UL]+',   '\\1L'],
+    ['(0x[0-9A-Fa-f]*)[UL]+',   '\\1'],
 ]
 
 # Replace the string representations of the regular expressions in the
@@ -179,7 +174,7 @@ del override
 
 
 
-class FunctionEvaluator:
+class FunctionEvaluator(object):
     """
     Handles delayed evaluation of a #define function call.
     """
@@ -192,10 +187,8 @@ class FunctionEvaluator:
         self.name = name
         self.args = function_arg_separator.split(args)
         try:
-            expansion = string.split(expansion, '##')
-        except (AttributeError, TypeError):
-            # Python 1.5 throws TypeError if "expansion" isn't a string,
-            # later versions throw AttributeError.
+            expansion = expansion.split('##')
+        except AttributeError:
             pass
         self.expansion = expansion
     def __call__(self, *values):
@@ -204,7 +197,7 @@ class FunctionEvaluator:
         with the specified values.
         """
         if len(self.args) != len(values):
-            raise ValueError, "Incorrect number of arguments to `%s'" % self.name
+            raise ValueError("Incorrect number of arguments to `%s'" % self.name)
         # Create a dictionary that maps the macro arguments to the
         # corresponding values in this "call."  We'll use this when we
         # eval() the expansion so that arguments will get expanded to
@@ -218,7 +211,7 @@ class FunctionEvaluator:
             if not s in self.args:
                 s = repr(s)
             parts.append(s)
-        statement = string.join(parts, ' + ')
+        statement = ' + '.join(parts)
 
         return eval(statement, globals(), locals)
 
@@ -238,7 +231,7 @@ function_arg_separator = re.compile(',\s*')
 
 
 
-class PreProcessor:
+class PreProcessor(object):
     """
     The main workhorse class for handling C pre-processing.
     """
@@ -292,9 +285,7 @@ class PreProcessor:
         global CPP_Expression, Table
         contents = line_continuations.sub('', contents)
         cpp_tuples = CPP_Expression.findall(contents)
-        return  map(lambda m, t=Table:
-                           (m[0],) + t[m[0]].match(m[1]).groups(),
-                    cpp_tuples)
+        return  [(m[0],) + Table[m[0]].match(m[1]).groups() for m in cpp_tuples]
 
     def __call__(self, file):
         """
@@ -363,7 +354,7 @@ class PreProcessor:
         eval()ing it in the C preprocessor namespace we use to
         track #define values.
         """
-        t = CPP_to_Python(string.join(t[1:]))
+        t = CPP_to_Python(' '.join(t[1:]))
         try: return eval(t, self.cpp_namespace)
         except (NameError, TypeError): return 0
 
@@ -446,13 +437,13 @@ class PreProcessor:
         """
         Default handling of a #ifdef line.
         """
-        self._do_if_else_condition(self.cpp_namespace.has_key(t[1]))
+        self._do_if_else_condition(t[1] in self.cpp_namespace)
 
     def do_ifndef(self, t):
         """
         Default handling of a #ifndef line.
         """
-        self._do_if_else_condition(not self.cpp_namespace.has_key(t[1]))
+        self._do_if_else_condition(t[1] not in self.cpp_namespace)
 
     def do_if(self, t):
         """
@@ -563,7 +554,7 @@ class PreProcessor:
                 s = self.cpp_namespace[m.group(1)]
                 if callable(s):
                     args = function_arg_separator.split(m.group(2))
-                    s = apply(s, args)
+                    s = s(*args)
             if not s:
                 return None
         return (t[0], s[0], s[1:-1])
@@ -584,7 +575,7 @@ class DumbPreProcessor(PreProcessor):
     to tailor its behavior.
     """
     def __init__(self, *args, **kw):
-        apply(PreProcessor.__init__, (self,)+args, kw)
+        PreProcessor.__init__(self, *args, **kw)
         d = self.default_table
         for func in ['if', 'elif', 'else', 'endif', 'ifdef', 'ifndef']:
             d[func] = d[func] = self.do_nothing
diff --git a/engine/SCons/dblite.py b/engine/SCons/dblite.py
index bcb2aa0..ea24e6a 100644
--- a/engine/SCons/dblite.py
+++ b/engine/SCons/dblite.py
@@ -1,12 +1,14 @@
 # dblite.py module contributed by Ralf W. Grosse-Kunstleve.
 # Extended for Unicode by Steven Knight.
 
-import cPickle
-import time
-import shutil
+import SCons.compat
+
+import builtins
 import os
-import types
-import __builtin__
+# compat layer imports "cPickle" for us if it's available.
+import pickle
+import shutil
+import time
 
 keep_all_files = 00000
 ignore_corrupt_dbfiles = 0
@@ -14,13 +16,13 @@ ignore_corrupt_dbfiles = 0
 def corruption_warning(filename):
     print "Warning: Discarding corrupt database:", filename
 
-if hasattr(types, 'UnicodeType'):
+try: unicode
+except NameError:
     def is_string(s):
-        t = type(s)
-        return t is types.StringType or t is types.UnicodeType
+        return isinstance(s, str)
 else:
     def is_string(s):
-        return type(s) is types.StringType
+        return type(s) in (str, unicode)
 
 try:
     unicode('a')
@@ -30,7 +32,7 @@ except NameError:
 dblite_suffix = '.dblite'
 tmp_suffix = '.tmp'
 
-class dblite:
+class dblite(object):
 
   # Squirrel away references to the functions in various modules
   # that we'll use when our __del__() method calls our sync() method
@@ -42,8 +44,8 @@ class dblite:
   # See the discussion at:
   #   http://mail.python.org/pipermail/python-bugs-list/2003-March/016877.html
 
-  _open = __builtin__.open
-  _cPickle_dump = cPickle.dump
+  _open = builtins.open
+  _pickle_dump = staticmethod(pickle.dump)
   _os_chmod = os.chmod
   try:
       _os_chown = os.chown
@@ -96,8 +98,8 @@ class dblite:
         p = f.read()
         if (len(p) > 0):
           try:
-            self._dict = cPickle.loads(p)
-          except (cPickle.UnpicklingError, EOFError):
+            self._dict = pickle.loads(p)
+          except (pickle.UnpicklingError, EOFError):
             if (ignore_corrupt_dbfiles == 0): raise
             if (ignore_corrupt_dbfiles == 1):
               corruption_warning(self._file_name)
@@ -109,7 +111,7 @@ class dblite:
   def sync(self):
     self._check_writable()
     f = self._open(self._tmp_name, "wb", self._mode)
-    self._cPickle_dump(self._dict, f, 1)
+    self._pickle_dump(self._dict, f, 1)
     f.close()
     # Windows doesn't allow renaming if the file exists, so unlink
     # it first, chmod'ing it to make sure we can do so.  On UNIX, we
@@ -142,14 +144,14 @@ class dblite:
   def __setitem__(self, key, value):
     self._check_writable()
     if (not is_string(key)):
-      raise TypeError, "key `%s' must be a string but is %s" % (key, type(key))
+      raise TypeError("key `%s' must be a string but is %s" % (key, type(key)))
     if (not is_string(value)):
-      raise TypeError, "value `%s' must be a string but is %s" % (value, type(value))
+      raise TypeError("value `%s' must be a string but is %s" % (value, type(value)))
     self._dict[key] = value
     self._needs_sync = 0001
 
   def keys(self):
-    return self._dict.keys()
+    return list(self._dict.keys())
 
   def has_key(self, key):
     return key in self._dict
@@ -158,7 +160,8 @@ class dblite:
     return key in self._dict
 
   def iterkeys(self):
-    return self._dict.iterkeys()
+    # Wrapping name in () prevents fixer from "fixing" this
+    return (self._dict.iterkeys)()
 
   __iter__ = iterkeys
 
@@ -195,7 +198,7 @@ def _exercise():
   except IOError, e:
     assert str(e) == "Read-only database: tmp.dblite"
   else:
-    raise RuntimeError, "IOError expected."
+    raise RuntimeError("IOError expected.")
   db = open("tmp", "w")
   assert len(db) == 4
   db["ping"] = "pong"
@@ -205,26 +208,26 @@ def _exercise():
   except TypeError, e:
     assert str(e) == "key `(1, 2)' must be a string but is <type 'tuple'>", str(e)
   else:
-    raise RuntimeError, "TypeError exception expected"
+    raise RuntimeError("TypeError exception expected")
   try:
     db["list"] = [1,2]
   except TypeError, e:
     assert str(e) == "value `[1, 2]' must be a string but is <type 'list'>", str(e)
   else:
-    raise RuntimeError, "TypeError exception expected"
+    raise RuntimeError("TypeError exception expected")
   db = open("tmp", "r")
   assert len(db) == 5
   db = open("tmp", "n")
   assert len(db) == 0
-  _open("tmp.dblite", "w")
+  dblite._open("tmp.dblite", "w")
   db = open("tmp", "r")
-  _open("tmp.dblite", "w").write("x")
+  dblite._open("tmp.dblite", "w").write("x")
   try:
     db = open("tmp", "r")
-  except cPickle.UnpicklingError:
+  except pickle.UnpicklingError:
     pass
   else:
-    raise RuntimeError, "cPickle exception expected."
+    raise RuntimeError("pickle exception expected.")
   global ignore_corrupt_dbfiles
   ignore_corrupt_dbfiles = 2
   db = open("tmp", "r")
@@ -235,7 +238,7 @@ def _exercise():
   except IOError, e:
     assert str(e) == "[Errno 2] No such file or directory: 'tmp.dblite'", str(e)
   else:
-    raise RuntimeError, "IOError expected."
+    raise RuntimeError("IOError expected.")
   print "OK"
 
 if (__name__ == "__main__"):
diff --git a/engine/SCons/exitfuncs.py b/engine/SCons/exitfuncs.py
index 6c75d01..0521568 100644
--- a/engine/SCons/exitfuncs.py
+++ b/engine/SCons/exitfuncs.py
@@ -27,7 +27,7 @@ Register functions which are executed when SCons exits for any reason.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/exitfuncs.py 4720 2010/03/24 03:14:11 jars"
+__revision__ = "src/engine/SCons/exitfuncs.py 5023 2010/06/14 22:05:46 scons"
 
 
 
@@ -41,7 +41,7 @@ def _run_exitfuncs():
 
     while _exithandlers:
         func, targs, kargs =  _exithandlers.pop()
-        apply(func, targs, kargs)
+        func(*targs, **kargs)
 
 def register(func, *targs, **kargs):
     """register a function to be executed upon normal program termination