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Diffstat (limited to 'engine/SCons/Script/Main.py')
| -rw-r--r-- | engine/SCons/Script/Main.py | 1360 |
1 files changed, 1360 insertions, 0 deletions
diff --git a/engine/SCons/Script/Main.py b/engine/SCons/Script/Main.py new file mode 100644 index 0000000..0d63b10 --- /dev/null +++ b/engine/SCons/Script/Main.py @@ -0,0 +1,1360 @@ +"""SCons.Script + +This file implements the main() function used by the scons script. + +Architecturally, this *is* the scons script, and will likely only be +called from the external "scons" wrapper. Consequently, anything here +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. + +""" + +# +# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 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/Script/Main.py 4577 2009/12/27 19:43:56 scons" + +import os +import os.path +import string +import sys +import time +import traceback + +# Strip the script directory from sys.path() so on case-insensitive +# (Windows) systems Python doesn't think that the "scons" script is the +# "SCons" package. Replace it with our own version directory so, if +# if they're there, we pick up the right version of the build engine +# modules. +#sys.path = [os.path.join(sys.prefix, +# 'lib', +# 'scons-%d' % SCons.__version__)] + sys.path[1:] + +import SCons.CacheDir +import SCons.Debug +import SCons.Defaults +import SCons.Environment +import SCons.Errors +import SCons.Job +import SCons.Node +import SCons.Node.FS +import SCons.SConf +import SCons.Script +import SCons.Taskmaster +import SCons.Util +import SCons.Warnings + +import SCons.Script.Interactive + +def fetch_win32_parallel_msg(): + # A subsidiary function that exists solely to isolate this import + # so we don't have to pull it in on all platforms, and so that an + # in-line "import" statement in the _main() function below doesn't + # cause warnings about local names shadowing use of the 'SCons' + # globl in nest scopes and UnboundLocalErrors and the like in some + # versions (2.1) of Python. + import SCons.Platform.win32 + return SCons.Platform.win32.parallel_msg + +# + +class SConsPrintHelpException(Exception): + pass + +display = SCons.Util.display +progress_display = SCons.Util.DisplayEngine() + +first_command_start = None +last_command_end = None + +class Progressor: + prev = '' + count = 0 + target_string = '$TARGET' + + def __init__(self, obj, interval=1, file=None, overwrite=False): + if file is None: + file = sys.stdout + + self.obj = obj + self.file = file + self.interval = interval + self.overwrite = overwrite + + if callable(obj): + self.func = obj + elif SCons.Util.is_List(obj): + self.func = self.spinner + elif string.find(obj, self.target_string) != -1: + self.func = self.replace_string + else: + self.func = self.string + + def write(self, s): + self.file.write(s) + self.file.flush() + self.prev = s + + def erase_previous(self): + if self.prev: + length = len(self.prev) + if self.prev[-1] in ('\n', '\r'): + length = length - 1 + self.write(' ' * length + '\r') + self.prev = '' + + def spinner(self, node): + self.write(self.obj[self.count % len(self.obj)]) + + def string(self, node): + self.write(self.obj) + + def replace_string(self, node): + self.write(string.replace(self.obj, self.target_string, str(node))) + + def __call__(self, node): + self.count = self.count + 1 + if (self.count % self.interval) == 0: + if self.overwrite: + self.erase_previous() + self.func(node) + +ProgressObject = SCons.Util.Null() + +def Progress(*args, **kw): + global ProgressObject + ProgressObject = apply(Progressor, args, kw) + +# Task control. +# + +_BuildFailures = [] + +def GetBuildFailures(): + return _BuildFailures + +class BuildTask(SCons.Taskmaster.OutOfDateTask): + """An SCons build task.""" + progress = ProgressObject + + def display(self, message): + display('scons: ' + message) + + def prepare(self): + self.progress(self.targets[0]) + return SCons.Taskmaster.OutOfDateTask.prepare(self) + + def needs_execute(self): + if SCons.Taskmaster.OutOfDateTask.needs_execute(self): + return True + if self.top and self.targets[0].has_builder(): + display("scons: `%s' is up to date." % str(self.node)) + return False + + def execute(self): + if print_time: + start_time = time.time() + global first_command_start + if first_command_start is None: + first_command_start = start_time + SCons.Taskmaster.OutOfDateTask.execute(self) + if print_time: + global cumulative_command_time + global last_command_end + finish_time = time.time() + last_command_end = finish_time + cumulative_command_time = cumulative_command_time+finish_time-start_time + sys.stdout.write("Command execution time: %f seconds\n"%(finish_time-start_time)) + + def do_failed(self, status=2): + _BuildFailures.append(self.exception[1]) + global exit_status + global this_build_status + if self.options.ignore_errors: + SCons.Taskmaster.OutOfDateTask.executed(self) + elif self.options.keep_going: + SCons.Taskmaster.OutOfDateTask.fail_continue(self) + exit_status = status + this_build_status = status + else: + SCons.Taskmaster.OutOfDateTask.fail_stop(self) + exit_status = status + this_build_status = status + + def executed(self): + 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) + else: # Alias or Python or ... + errstr="Do not know how to make %s target `%s'." % (classname(t), t) + sys.stderr.write("scons: *** " + errstr) + if not self.options.keep_going: + sys.stderr.write(" Stop.") + sys.stderr.write("\n") + try: + raise SCons.Errors.BuildError(t, errstr) + except KeyboardInterrupt: + raise + except: + self.exception_set() + self.do_failed() + else: + print "scons: Nothing to be done for `%s'." % t + SCons.Taskmaster.OutOfDateTask.executed(self) + else: + SCons.Taskmaster.OutOfDateTask.executed(self) + + def failed(self): + # Handle the failure of a build task. The primary purpose here + # is to display the various types of Errors and Exceptions + # appropriately. + exc_info = self.exc_info() + try: + t, e, tb = exc_info + except ValueError: + t, e = exc_info + tb = None + + if t is None: + # The Taskmaster didn't record an exception for this Task; + # see if the sys module has one. + try: + t, e, tb = sys.exc_info()[:] + except ValueError: + t, e = exc_info + tb = None + + # Deprecated string exceptions will have their string stored + # in the first entry of the tuple. + if e is None: + e = t + + buildError = SCons.Errors.convert_to_BuildError(e) + if not buildError.node: + buildError.node = self.node + + node = buildError.node + if not SCons.Util.is_List(node): + node = [ node ] + nodename = string.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)): + type, value, trace = buildError.exc_info + traceback.print_exception(type, value, trace) + elif tb and print_stacktrace: + sys.stderr.write("scons: internal stack trace:\n") + traceback.print_tb(tb, file=sys.stderr) + + self.exception = (e, buildError, tb) # type, value, traceback + self.do_failed(buildError.exitstatus) + + self.exc_clear() + + def postprocess(self): + if self.top: + t = self.targets[0] + for tp in self.options.tree_printers: + tp.display(t) + if self.options.debug_includes: + tree = t.render_include_tree() + if tree: + print + print tree + SCons.Taskmaster.OutOfDateTask.postprocess(self) + + def make_ready(self): + """Make a task ready for execution""" + SCons.Taskmaster.OutOfDateTask.make_ready(self) + if self.out_of_date and self.options.debug_explain: + explanation = self.out_of_date[0].explain() + if explanation: + sys.stdout.write("scons: " + explanation) + +class CleanTask(SCons.Taskmaster.AlwaysTask): + """An SCons clean task.""" + def fs_delete(self, path, pathstr, remove=1): + try: + if os.path.lexists(path): + if os.path.isfile(path) or os.path.islink(path): + if remove: os.unlink(path) + 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: + p = os.path.join(path, e) + s = os.path.join(pathstr, e) + if os.path.isfile(p): + if remove: os.unlink(p) + display("Removed " + s) + else: + self.fs_delete(p, s, remove) + # then delete dir itself + if remove: os.rmdir(path) + display("Removed directory " + pathstr) + else: + errstr = "Path '%s' exists but isn't a file or directory." + raise SCons.Errors.UserError(errstr % (pathstr)) + except SCons.Errors.UserError, e: + print e + except (IOError, OSError), e: + print "scons: Could not remove '%s':" % pathstr, e.strerror + + def show(self): + target = self.targets[0] + if (target.has_builder() or target.side_effect) and not target.noclean: + for t in self.targets: + if not t.isdir(): + display("Removed " + str(t)) + if SCons.Environment.CleanTargets.has_key(target): + files = SCons.Environment.CleanTargets[target] + for f in files: + self.fs_delete(f.abspath, str(f), 0) + + def remove(self): + target = self.targets[0] + if (target.has_builder() or target.side_effect) and not target.noclean: + for t in self.targets: + try: + removed = t.remove() + except OSError, e: + # An OSError may indicate something like a permissions + # issue, an IOError would indicate something like + # the file not existing. In either case, print a + # message and keep going to try to remove as many + # targets aa possible. + print "scons: Could not remove '%s':" % str(t), e.strerror + else: + if removed: + display("Removed " + str(t)) + if SCons.Environment.CleanTargets.has_key(target): + files = SCons.Environment.CleanTargets[target] + for f in files: + self.fs_delete(f.abspath, str(f)) + + execute = remove + + # We want the Taskmaster to update the Node states (and therefore + # handle reference counts, etc.), but we don't want to call + # back to the Node's post-build methods, which would do things + # we don't want, like store .sconsign information. + executed = SCons.Taskmaster.Task.executed_without_callbacks + + # Have the taskmaster arrange to "execute" all of the targets, because + # we'll figure out ourselves (in remove() or show() above) whether + # anything really needs to be done. + make_ready = SCons.Taskmaster.Task.make_ready_all + + def prepare(self): + pass + +class QuestionTask(SCons.Taskmaster.AlwaysTask): + """An SCons task for the -q (question) option.""" + def prepare(self): + pass + + def execute(self): + if self.targets[0].get_state() != SCons.Node.up_to_date or \ + (self.top and not self.targets[0].exists()): + global exit_status + global this_build_status + exit_status = 1 + this_build_status = 1 + self.tm.stop() + + def executed(self): + pass + + +class TreePrinter: + def __init__(self, derived=False, prune=False, status=False): + self.derived = derived + self.prune = prune + self.status = status + def get_all_children(self, node): + return node.all_children() + def get_derived_children(self, node): + children = node.all_children(None) + return filter(lambda x: x.has_builder(), children) + def display(self, t): + if self.derived: + func = self.get_derived_children + else: + func = self.get_all_children + s = self.status and 2 or 0 + SCons.Util.print_tree(t, func, prune=self.prune, showtags=s) + + +def python_version_string(): + return string.split(sys.version)[0] + +def python_version_unsupported(version=sys.version_info): + return version < (1, 5, 2) + +def python_version_deprecated(version=sys.version_info): + return version < (2, 4, 0) + + +# Global variables + +print_objects = 0 +print_memoizer = 0 +print_stacktrace = 0 +print_time = 0 +sconscript_time = 0 +cumulative_command_time = 0 +exit_status = 0 # final exit status, assume success by default +this_build_status = 0 # "exit status" of an individual build +num_jobs = None +delayed_warnings = [] + +class FakeOptionParser: + """ + A do-nothing option parser, used for the initial OptionsParser variable. + + During normal SCons operation, the OptionsParser is created right + away by the main() function. Certain tests scripts however, can + introspect on different Tool modules, the initialization of which + can try to add a new, local option to an otherwise uninitialized + OptionsParser object. This allows that introspection to happen + without blowing up. + + """ + class FakeOptionValues: + def __getattr__(self, attr): + return None + values = FakeOptionValues() + def add_local_option(self, *args, **kw): + pass + +OptionsParser = FakeOptionParser() + +def AddOption(*args, **kw): + if not kw.has_key('default'): + kw['default'] = None + result = apply(OptionsParser.add_local_option, args, kw) + return result + +def GetOption(name): + return getattr(OptionsParser.values, name) + +def SetOption(name, value): + return OptionsParser.values.set_option(name, value) + +# +class Stats: + def __init__(self): + self.stats = [] + self.labels = [] + self.append = self.do_nothing + self.print_stats = self.do_nothing + def enable(self, outfp): + self.outfp = outfp + self.append = self.do_append + self.print_stats = self.do_print + def do_nothing(self, *args, **kw): + pass + +class CountStats(Stats): + def do_append(self, label): + self.labels.append(label) + self.stats.append(SCons.Debug.fetchLoggedInstances()) + def do_print(self): + stats_table = {} + for s in self.stats: + for n in map(lambda t: t[0], 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, '') + 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: + r = stats_table[k][:l] + [k] + self.outfp.write(fmt2 % tuple(r)) + +count_stats = CountStats() + +class MemStats(Stats): + def do_append(self, label): + self.labels.append(label) + 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): + self.outfp.write(fmt % (label, stats)) + +memory_stats = MemStats() + +# utility functions + +def _scons_syntax_error(e): + """Handle syntax errors. Print out a message and show where the error + occurred. + """ + etype, value, tb = sys.exc_info() + lines = traceback.format_exception_only(etype, value) + for line in lines: + sys.stderr.write(line+'\n') + sys.exit(2) + +def find_deepest_user_frame(tb): + """ + Find the deepest stack frame that is not part of SCons. + + Input is a "pre-processed" stack trace in the form + returned by traceback.extract_tb() or traceback.extract_stack() + """ + + tb.reverse() + + # find the deepest traceback frame that is not part + # of SCons: + for frame in tb: + filename = frame[0] + if string.find(filename, os.sep+'SCons'+os.sep) == -1: + return frame + return tb[0] + +def _scons_user_error(e): + """Handle user errors. Print out a message and a description of the + error, along with the line number and routine where it occured. + The file and line number will be the deepest stack frame that is + not part of SCons itself. + """ + global print_stacktrace + etype, value, tb = sys.exc_info() + if print_stacktrace: + traceback.print_exception(etype, value, tb) + filename, lineno, routine, dummy = find_deepest_user_frame(traceback.extract_tb(tb)) + sys.stderr.write("\nscons: *** %s\n" % value) + sys.stderr.write('File "%s", line %d, in %s\n' % (filename, lineno, routine)) + sys.exit(2) + +def _scons_user_warning(e): + """Handle user warnings. Print out a message and a description of + the warning, along with the line number and routine where it occured. + The file and line number will be the deepest stack frame that is + not part of SCons itself. + """ + etype, value, tb = sys.exc_info() + filename, lineno, routine, dummy = find_deepest_user_frame(traceback.extract_tb(tb)) + sys.stderr.write("\nscons: warning: %s\n" % e) + sys.stderr.write('File "%s", line %d, in %s\n' % (filename, lineno, routine)) + +def _scons_internal_warning(e): + """Slightly different from _scons_user_warning in that we use the + *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('File "%s", line %d, in %s\n' % (filename, lineno, routine)) + +def _scons_internal_error(): + """Handle all errors but user errors. Print out a message telling + the user what to do in this case and print a normal trace. + """ + print 'internal error' + traceback.print_exc() + sys.exit(2) + +def _SConstruct_exists(dirname='', repositories=[], filelist=None): + """This function checks that an SConstruct file exists in a directory. + If so, it returns the path of the file. By default, it checks the + current directory. + """ + if not filelist: + filelist = ['SConstruct', 'Sconstruct', 'sconstruct'] + for file in filelist: + sfile = os.path.join(dirname, file) + if os.path.isfile(sfile): + return sfile + if not os.path.isabs(sfile): + for rep in repositories: + if os.path.isfile(os.path.join(rep, sfile)): + return sfile + return None + +def _set_debug_values(options): + global print_memoizer, print_objects, print_stacktrace, print_time + + debug_values = options.debug + + if "count" in debug_values: + # All of the object counts are within "if __debug__:" blocks, + # which get stripped when running optimized (with python -O or + # from compiled *.pyo files). Provide a warning if __debug__ is + # stripped, so it doesn't just look like --debug=count is broken. + enable_count = False + if __debug__: enable_count = True + if enable_count: + count_stats.enable(sys.stdout) + else: + msg = "--debug=count is not supported when running SCons\n" + \ + "\twith the python -O option or optimized (.pyo) modules." + SCons.Warnings.warn(SCons.Warnings.NoObjectCountWarning, msg) + if "dtree" in debug_values: + options.tree_printers.append(TreePrinter(derived=True)) + options.debug_explain = ("explain" in debug_values) + if "findlibs" in debug_values: + SCons.Scanner.Prog.print_find_libs = "findlibs" + options.debug_includes = ("includes" in debug_values) + print_memoizer = ("memoizer" in debug_values) + if "memory" in debug_values: + memory_stats.enable(sys.stdout) + print_objects = ("objects" in debug_values) + if "presub" in debug_values: + SCons.Action.print_actions_presub = 1 + if "stacktrace" in debug_values: + print_stacktrace = 1 + if "stree" in debug_values: + options.tree_printers.append(TreePrinter(status=True)) + if "time" in debug_values: + print_time = 1 + if "tree" in debug_values: + options.tree_printers.append(TreePrinter()) + +def _create_path(plist): + path = '.' + for d in plist: + if os.path.isabs(d): + path = d + else: + path = path + '/' + d + return path + +def _load_site_scons_dir(topdir, site_dir_name=None): + """Load the site_scons dir under topdir. + Adds site_scons to sys.path, imports site_scons/site_init.py, + and adds site_scons/site_tools to default toolpath.""" + if site_dir_name: + err_if_not_found = True # user specified: err if missing + else: + site_dir_name = "site_scons" + err_if_not_found = False + + 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 + return + + site_init_filename = "site_init.py" + site_init_modname = "site_init" + site_tools_dirname = "site_tools" + sys.path = [os.path.abspath(site_dir)] + sys.path + site_init_file = os.path.join(site_dir, site_init_filename) + site_tools_dir = os.path.join(site_dir, site_tools_dirname) + if os.path.exists(site_init_file): + import imp + # TODO(2.4): turn this into try:-except:-finally: + try: + try: + fp, pathname, description = imp.find_module(site_init_modname, + [site_dir]) + # Load the file into SCons.Script namespace. This is + # opaque and clever; m is the module object for the + # SCons.Script module, and the exec ... in call executes a + # file (or string containing code) in the context of the + # module's dictionary, so anything that code defines ends + # up adding to that module. This is really short, but all + # the error checking makes it longer. + try: + 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) + try: + # This is the magic. + exec fp in m.__dict__ + except KeyboardInterrupt: + raise + except Exception, e: + fmt = '*** Error loading site_init file %s:\n' + sys.stderr.write(fmt % repr(site_init_file)) + raise + except KeyboardInterrupt: + raise + except ImportError, e: + fmt = '*** cannot import site init file %s:\n' + sys.stderr.write(fmt % repr(site_init_file)) + raise + finally: + if fp: + fp.close() + if os.path.exists(site_tools_dir): + SCons.Tool.DefaultToolpath.append(os.path.abspath(site_tools_dir)) + +def version_string(label, module): + version = module.__version__ + build = module.__build__ + if build: + if build[0] != '.': + build = '.' + build + version = version + build + fmt = "\t%s: v%s, %s, by %s on %s\n" + return fmt % (label, + version, + module.__date__, + module.__developer__, + module.__buildsys__) + +def _main(parser): + global exit_status + global this_build_status + + options = parser.values + + # Here's where everything really happens. + + # First order of business: set up default warnings and then + # handle the user's warning options, so that we can issue (or + # suppress) appropriate warnings about anything that might happen, + # as configured by the user. + + default_warnings = [ SCons.Warnings.CorruptSConsignWarning, + 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: + SCons.Warnings.enableWarningClass(warning) + SCons.Warnings._warningOut = _scons_internal_warning + SCons.Warnings.process_warn_strings(options.warn) + + # Now that we have the warnings configuration set up, we can actually + # issue (or suppress) any warnings about warning-worthy things that + # occurred while the command-line options were getting parsed. + try: + dw = options.delayed_warnings + except AttributeError: + pass + else: + delayed_warnings.extend(dw) + for warning_type, message in delayed_warnings: + SCons.Warnings.warn(warning_type, message) + + if options.diskcheck: + SCons.Node.FS.set_diskcheck(options.diskcheck) + + # Next, we want to create the FS object that represents the outside + # world's file system, as that's central to a lot of initialization. + # To do this, however, we need to be in the directory from which we + # want to start everything, which means first handling any relevant + # options that might cause us to chdir somewhere (-C, -D, -U, -u). + if options.directory: + script_dir = os.path.abspath(_create_path(options.directory)) + else: + script_dir = os.getcwd() + + target_top = None + if options.climb_up: + target_top = '.' # directory to prepend to targets + while script_dir and not _SConstruct_exists(script_dir, + options.repository, + options.file): + script_dir, last_part = os.path.split(script_dir) + if last_part: + target_top = os.path.join(last_part, target_top) + else: + script_dir = '' + + if script_dir and script_dir != os.getcwd(): + display("scons: Entering directory `%s'" % script_dir) + try: + os.chdir(script_dir) + except OSError: + sys.stderr.write("Could not change directory to %s\n" % script_dir) + + # Now that we're in the top-level SConstruct directory, go ahead + # and initialize the FS object that represents the file system, + # and make it the build engine default. + fs = SCons.Node.FS.get_default_fs() + + for rep in options.repository: + fs.Repository(rep) + + # Now that we have the FS object, the next order of business is to + # check for an SConstruct file (or other specified config file). + # If there isn't one, we can bail before doing any more work. + scripts = [] + if options.file: + scripts.extend(options.file) + if not scripts: + sfile = _SConstruct_exists(repositories=options.repository, + filelist=options.file) + if sfile: + scripts.append(sfile) + + if not scripts: + if options.help: + # There's no SConstruct, but they specified -h. + # 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." + + if scripts[0] == "-": + d = fs.getcwd() + else: + d = fs.File(scripts[0]).dir + fs.set_SConstruct_dir(d) + + _set_debug_values(options) + SCons.Node.implicit_cache = options.implicit_cache + SCons.Node.implicit_deps_changed = options.implicit_deps_changed + SCons.Node.implicit_deps_unchanged = options.implicit_deps_unchanged + + if options.no_exec: + SCons.SConf.dryrun = 1 + SCons.Action.execute_actions = None + if options.question: + SCons.SConf.dryrun = 1 + if options.clean: + SCons.SConf.SetBuildType('clean') + if options.help: + SCons.SConf.SetBuildType('help') + SCons.SConf.SetCacheMode(options.config) + SCons.SConf.SetProgressDisplay(progress_display) + + if options.no_progress or options.silent: + progress_display.set_mode(0) + + if options.site_dir: + _load_site_scons_dir(d, options.site_dir) + elif not options.no_site_dir: + _load_site_scons_dir(d) + + if options.include_dir: + sys.path = options.include_dir + sys.path + + # That should cover (most of) the options. Next, set up the variables + # that hold command-line arguments, so the SConscript files that we + # read and execute have access to them. + targets = [] + xmit_args = [] + for a in parser.largs: + if a[:1] == '-': + continue + if '=' in a: + xmit_args.append(a) + else: + targets.append(a) + SCons.Script._Add_Targets(targets + parser.rargs) + SCons.Script._Add_Arguments(xmit_args) + + # If stdout is not a tty, replace it with a wrapper object to call flush + # after every write. + # + # Tty devices automatically flush after every newline, so the replacement + # isn't necessary. Furthermore, if we replace sys.stdout, the readline + # module will no longer work. This affects the behavior during + # --interactive mode. --interactive should only be used when stdin and + # stdout refer to a tty. + if not hasattr(sys.stdout, 'isatty') or not sys.stdout.isatty(): + sys.stdout = SCons.Util.Unbuffered(sys.stdout) + if not hasattr(sys.stderr, 'isatty') or not sys.stderr.isatty(): + sys.stderr = SCons.Util.Unbuffered(sys.stderr) + + memory_stats.append('before reading SConscript files:') + count_stats.append(('pre-', 'read')) + + # And here's where we (finally) read the SConscript files. + + progress_display("scons: Reading SConscript files ...") + + start_time = time.time() + try: + for script in scripts: + SCons.Script._SConscript._SConscript(fs, script) + except SCons.Errors.StopError, e: + # We had problems reading an SConscript file, such as it + # couldn't be copied in to the VariantDir. Since we're just + # reading SConscript files and haven't started building + # things yet, stop regardless of whether they used -i or -k + # or anything else. + sys.stderr.write("scons: *** %s Stop.\n" % e) + exit_status = 2 + sys.exit(exit_status) + global sconscript_time + sconscript_time = time.time() - start_time + + progress_display("scons: done reading SConscript files.") + + memory_stats.append('after reading SConscript files:') + count_stats.append(('post-', 'read')) + + # Re-{enable,disable} warnings in case they disabled some in + # the SConscript file. + # + # We delay enabling the PythonVersionWarning class until here so that, + # if they explicity disabled it in either in the command line or in + # $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.process_warn_strings(options.warn) + + # Now that we've read the SConscript files, we can check for the + # warning about deprecated Python versions--delayed until here + # in case they disabled the warning in the SConscript files. + if python_version_deprecated(): + msg = "Support for pre-2.4 Python (%s) is deprecated.\n" + \ + " If this will cause hardship, contact dev@scons.tigris.org." + SCons.Warnings.warn(SCons.Warnings.PythonVersionWarning, + msg % python_version_string()) + + if not options.help: + SCons.SConf.CreateConfigHBuilder(SCons.Defaults.DefaultEnvironment()) + + # Now re-parse the command-line options (any to the left of a '--' + # argument, that is) with any user-defined command-line options that + # the SConscript files may have added to the parser object. This will + # emit the appropriate error message and exit if any unknown option + # was specified on the command line. + + parser.preserve_unknown_options = False + parser.parse_args(parser.largs, options) + + if options.help: + help_text = SCons.Script.help_text + if help_text is None: + # They specified -h, but there was no Help() inside the + # SConscript files. Give them the options usage. + raise SConsPrintHelpException + else: + print help_text + print "Use scons -H for help about command-line options." + exit_status = 0 + return + + # Change directory to the top-level SConstruct directory, then tell + # the Node.FS subsystem that we're all done reading the SConscript + # files and calling Repository() and VariantDir() and changing + # directories and the like, so it can go ahead and start memoizing + # the string values of file system nodes. + + fs.chdir(fs.Top) + + SCons.Node.FS.save_strings(1) + + # Now that we've read the SConscripts we can set the options + # that are SConscript settable: + SCons.Node.implicit_cache = options.implicit_cache + SCons.Node.FS.set_duplicate(options.duplicate) + fs.set_max_drift(options.max_drift) + + SCons.Job.explicit_stack_size = options.stack_size + + if options.md5_chunksize: + SCons.Node.FS.File.md5_chunksize = options.md5_chunksize + + platform = SCons.Platform.platform_module() + + if options.interactive: + SCons.Script.Interactive.interact(fs, OptionsParser, options, + targets, target_top) + + else: + + # Build the targets + nodes = _build_targets(fs, options, targets, target_top) + if not nodes: + exit_status = 2 + +def _build_targets(fs, options, targets, target_top): + + global this_build_status + this_build_status = 0 + + progress_display.set_mode(not (options.no_progress or options.silent)) + display.set_mode(not options.silent) + SCons.Action.print_actions = not options.silent + SCons.Action.execute_actions = not options.no_exec + SCons.Node.FS.do_store_info = not options.no_exec + SCons.SConf.dryrun = options.no_exec + + if options.diskcheck: + SCons.Node.FS.set_diskcheck(options.diskcheck) + + SCons.CacheDir.cache_enabled = not options.cache_disable + SCons.CacheDir.cache_debug = options.cache_debug + SCons.CacheDir.cache_force = options.cache_force + SCons.CacheDir.cache_show = options.cache_show + + if options.no_exec: + CleanTask.execute = CleanTask.show + else: + CleanTask.execute = CleanTask.remove + + lookup_top = None + if targets or SCons.Script.BUILD_TARGETS != SCons.Script._build_plus_default: + # They specified targets on the command line or modified + # BUILD_TARGETS in the SConscript file(s), so if they used -u, + # -U or -D, we have to look up targets relative to the top, + # but we build whatever they specified. + if target_top: + lookup_top = fs.Dir(target_top) + target_top = None + + targets = SCons.Script.BUILD_TARGETS + else: + # There are no targets specified on the command line, + # so if they used -u, -U or -D, we may have to restrict + # what actually gets built. + d = None + if target_top: + if options.climb_up == 1: + # -u, local directory and below + target_top = fs.Dir(target_top) + lookup_top = target_top + elif options.climb_up == 2: + # -D, all Default() targets + target_top = None + lookup_top = None + elif options.climb_up == 3: + # -U, local SConscript Default() targets + target_top = fs.Dir(target_top) + def check_dir(x, target_top=target_top): + if hasattr(x, 'cwd') and not x.cwd is None: + cwd = x.cwd.srcnode() + return cwd == target_top + else: + # x doesn't have a cwd, so it's either not a target, + # 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) + SCons.Script.DEFAULT_TARGETS[:] = d + target_top = None + lookup_top = None + + targets = SCons.Script._Get_Default_Targets(d, fs) + + if not targets: + sys.stderr.write("scons: *** No targets specified and no Default() targets found. Stop.\n") + return None + + def Entry(x, ltop=lookup_top, ttop=target_top, fs=fs): + if isinstance(x, SCons.Node.Node): + node = x + else: + node = None + # Why would ltop be None? Unfortunately this happens. + if ltop is None: ltop = '' + # Curdir becomes important when SCons is called with -u, -C, + # or similar option that changes directory, and so the paths + # of targets given on the command line need to be adjusted. + curdir = os.path.join(os.getcwd(), str(ltop)) + for lookup in SCons.Node.arg2nodes_lookups: + node = lookup(x, curdir=curdir) + if node is not None: + break + if node is None: + node = fs.Entry(x, directory=ltop, create=1) + if ttop and not node.is_under(ttop): + if isinstance(node, SCons.Node.FS.Dir) and ttop.is_under(node): + node = ttop + else: + node = None + return node + + nodes = filter(None, map(Entry, targets)) + + task_class = BuildTask # default action is to build targets + opening_message = "Building targets ..." + closing_message = "done building targets." + if options.keep_going: + failure_message = "done building targets (errors occurred during build)." + else: + failure_message = "building terminated because of errors." + if options.question: + task_class = QuestionTask + try: + if options.clean: + task_class = CleanTask + opening_message = "Cleaning targets ..." + closing_message = "done cleaning targets." + if options.keep_going: + failure_message = "done cleaning targets (errors occurred during clean)." + else: + failure_message = "cleaning terminated because of errors." + except AttributeError: + pass + + task_class.progress = ProgressObject + + if options.random: + def order(dependencies): + """Randomize the dependencies.""" + import random + # This is cribbed from the implementation of + # random.shuffle() in Python 2.X. + d = dependencies + for i in xrange(len(d)-1, 0, -1): + j = int(random.random() * (i+1)) + d[i], d[j] = d[j], d[i] + return d + else: + def order(dependencies): + """Leave the order of dependencies alone.""" + return dependencies + + if options.taskmastertrace_file == '-': + tmtrace = sys.stdout + elif options.taskmastertrace_file: + tmtrace = open(options.taskmastertrace_file, 'wb') + else: + tmtrace = None + taskmaster = SCons.Taskmaster.Taskmaster(nodes, task_class, order, tmtrace) + + # Let the BuildTask objects get at the options to respond to the + # various print_* settings, tree_printer list, etc. + BuildTask.options = options + + global num_jobs + num_jobs = options.num_jobs + jobs = SCons.Job.Jobs(num_jobs, taskmaster) + if num_jobs > 1: + msg = None + if jobs.num_jobs == 1: + msg = "parallel builds are unsupported by this version of Python;\n" + \ + "\tignoring -j or num_jobs option.\n" + elif sys.platform == 'win32': + msg = fetch_win32_parallel_msg() + if msg: + SCons.Warnings.warn(SCons.Warnings.NoParallelSupportWarning, msg) + + memory_stats.append('before building targets:') + count_stats.append(('pre-', 'build')) + + def jobs_postfunc( + jobs=jobs, + options=options, + closing_message=closing_message, + failure_message=failure_message + ): + if jobs.were_interrupted(): + if not options.no_progress and not options.silent: + sys.stderr.write("scons: Build interrupted.\n") + global exit_status + global this_build_status + exit_status = 2 + this_build_status = 2 + + if this_build_status: + progress_display("scons: " + failure_message) + else: + progress_display("scons: " + closing_message) + if not options.no_exec: + if jobs.were_interrupted(): + progress_display("scons: writing .sconsign file.") + SCons.SConsign.write() + + progress_display("scons: " + opening_message) + jobs.run(postfunc = jobs_postfunc) + + memory_stats.append('after building targets:') + count_stats.append(('post-', 'build')) + + return nodes + +def _exec_main(parser, values): + sconsflags = os.environ.get('SCONSFLAGS', '') + all_args = string.split(sconsflags) + sys.argv[1:] + + options, args = parser.parse_args(all_args, values) + + if type(options.debug) == type([]) 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 + + # Some versions of Python 2.4 shipped a profiler that had the + # wrong 'c_exception' entry in its dispatch table. Make sure + # we have the right one. (This may put an unnecessary entry + # in the table in earlier versions of Python, but its presence + # shouldn't hurt anything). + try: + dispatch = Profile.dispatch + except AttributeError: + pass + else: + dispatch['c_exception'] = Profile.trace_dispatch_return + + prof = Profile() + try: + prof.runcall(_main, parser) + except SConsPrintHelpException, e: + prof.dump_stats(options.profile_file) + raise e + except SystemExit: + pass + prof.dump_stats(options.profile_file) + else: + _main(parser) + +def main(): + global OptionsParser + global exit_status + global first_command_start + + # Check up front for a Python version we do not support. We + # delay the check for deprecated Python versions until later, + # after the SConscript files have been read, in case they + # disable that warning. + if python_version_unsupported(): + msg = "scons: *** SCons version %s does not run under Python version %s.\n" + sys.stderr.write(msg % (SCons.__version__, python_version_string())) + sys.exit(1) + + parts = ["SCons by Steven Knight et al.:\n"] + try: + import __main__ + parts.append(version_string("script", __main__)) + except (ImportError, AttributeError): + # On Windows there is no scons.py, so there is no + # __main__.__version__, hence there is no script version. + pass + parts.append(version_string("engine", SCons)) + parts.append("Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 The SCons Foundation") + version = string.join(parts, '') + + import SConsOptions + parser = SConsOptions.Parser(version) + values = SConsOptions.SConsValues(parser.get_default_values()) + + OptionsParser = parser + + try: + _exec_main(parser, values) + except SystemExit, s: + if s: + exit_status = s + except KeyboardInterrupt: + print("scons: Build interrupted.") + sys.exit(2) + except SyntaxError, e: + _scons_syntax_error(e) + except SCons.Errors.InternalError: + _scons_internal_error() + except SCons.Errors.UserError, e: + _scons_user_error(e) + except SConsPrintHelpException: + parser.print_help() + exit_status = 0 + except SCons.Errors.BuildError, e: + exit_status = e.exitstatus + except: + # An exception here is likely a builtin Python exception Python + # code in an SConscript file. Show them precisely what the + # problem was and where it happened. + SCons.Script._SConscript.SConscript_exception() + sys.exit(2) + + memory_stats.print_stats() + count_stats.print_stats() + + if print_objects: + SCons.Debug.listLoggedInstances('*') + #SCons.Debug.dumpLoggedInstances('*') + + if print_memoizer: + SCons.Memoize.Dump("Memoizer (memory cache) hits and misses:") + + # Dump any development debug info that may have been enabled. + # These are purely for internal debugging during development, so + # there's no need to control them with --debug= options; they're + # controlled by changing the source code. + SCons.Debug.dump_caller_counts() + SCons.Taskmaster.dump_stats() + + if print_time: + total_time = time.time() - SCons.Script.start_time + if num_jobs == 1: + ct = cumulative_command_time + else: + if last_command_end is None or first_command_start is None: + ct = 0.0 + else: + ct = last_command_end - first_command_start + scons_time = total_time - sconscript_time - ct + print "Total build time: %f seconds"%total_time + print "Total SConscript file execution time: %f seconds"%sconscript_time + print "Total SCons execution time: %f seconds"%scons_time + print "Total command execution time: %f seconds"%ct + + sys.exit(exit_status) + +# Local Variables: +# tab-width:4 +# indent-tabs-mode:nil +# End: +# vim: set expandtab tabstop=4 shiftwidth=4: |