1 files changed, 222 insertions, 0 deletions
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+#!/usr/bin/env python
+#
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 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.
+#
+
+import os
+import os.path
+import sys
+import glob
+import subprocess
+
+__doc__ = """bootstrap.py
+
+Execute SCons from this source tree. It copies Python scripts and modules
+from src/ subdirectory into a subdirectory named "bootstrap/" (by default),
+and executes SCons from there with the supplied command-line arguments.
+
+This is a minimal build of SCons to bootstrap the full build of all the
+packages, as specified in our local SConstruct file.
+
+Some options are specific to this bootstrap.py script and are *not* passed
+on to the SCons script. All of these begin with the string "bootstrap_":
+
+    --bootstrap_dir=DIR
+
+        Sets the name of the directory into which the SCons files will
+        be copied.  The default is "bootstrap" in the local subdirectory.
+
+    --bootstrap_force
+
+        Forces a copy of all necessary files.  By default, the
+        bootstrap.py script only updates the bootstrap copy if the
+        content of the source copy is different.
+
+    --bootstrap_src=DIR
+
+        Searches for the SCons files relative to the specified DIR,
+        then relative to the directory in which this bootstrap.py
+        script is found.
+
+    --bootstrap_update
+
+        Only updates the bootstrap subdirectory, and then exits.
+
+In addition to the above, the bootstrap.py script understands
+the following SCons options:
+
+    -C, --directory
+
+        Changes to the specified directory before invoking SCons.
+        Because we change directory right away to the specified directory,
+        the SCons script itself doesn't need to, so this option gets
+        "eaten" by the bootstrap.py script.
+"""
+
+def parseManifestLines(basedir, lines):
+    """ Scans the single lines of a MANIFEST file,
+        and returns the list of source files.
+        Has basic support for recursive globs '**',
+        filename wildcards of the form '*.xml' and
+        comment lines, starting with a '#'.
+    """
+    sources = []
+    basewd = os.path.abspath(basedir)
+    for l in lines:
+        if l.startswith('#'):
+            # Skip comments
+            continue
+        l = l.rstrip('\n')
+        if l.endswith('**'):
+            # Glob all files recursively
+            globwd = os.path.dirname(os.path.join(basewd, l))
+            for path, dirs, files in os.walk(globwd):
+                for f in files:
+                    fpath = os.path.join(globwd, path, f)
+                    sources.append(os.path.relpath(fpath, basewd))
+        elif '*' in l:
+            # Glob file pattern
+            files = glob.glob(os.path.join(basewd, l))
+            for f in files:
+                sources.append(os.path.relpath(f, basewd))
+        else:
+            sources.append(l)
+
+    return sources
+
+def main():
+    script_dir = os.path.abspath(os.path.dirname(__file__))
+    
+    bootstrap_dir = os.path.join(script_dir, 'bootstrap')
+    
+    pass_through_args = []
+    update_only = None
+    
+    requires_an_argument = 'bootstrap.py:  %s requires an argument\n'
+    
+    search = [script_dir]
+    
+    def find(file, search=search):
+        for dir in search:
+            f = os.path.join(dir, file)
+            if os.path.exists(f):
+                return os.path.normpath(f)
+        sys.stderr.write("could not find `%s' in search path:\n" % file)
+        sys.stderr.write("\t" + "\n\t".join(search) + "\n")
+        sys.exit(2)
+    
+    def must_copy(dst, src):
+        if not os.path.exists(dst):
+            return 1
+        return open(dst, 'rb').read() != open(src, 'rb').read()
+    
+    # Note:  We don't use the getopt module to process the command-line
+    # arguments because we'd have to teach it about all of the SCons options.
+    
+    command_line_args = sys.argv[1:]
+    
+    while command_line_args:
+        arg = command_line_args.pop(0)
+    
+        if arg == '--bootstrap_dir':
+            try:
+                bootstrap_dir = command_line_args.pop(0)
+            except IndexError:
+                sys.stderr.write(requires_an_argument % arg)
+                sys.exit(1)
+        elif arg[:16] == '--bootstrap_dir=':
+            bootstrap_dir = arg[16:]
+    
+        elif arg == '--bootstrap_force':
+            def must_copy(dst, src):
+                return 1
+    
+        elif arg == '--bootstrap_src':
+            try:
+                search.insert(0, command_line_args.pop(0))
+            except IndexError:
+                sys.stderr.write(requires_an_argument % arg)
+                sys.exit(1)
+        elif arg[:16] == '--bootstrap_src=':
+            search.insert(0, arg[16:])
+    
+        elif arg == '--bootstrap_update':
+            update_only = 1
+    
+        elif arg in ('-C', '--directory'):
+            try:
+                dir = command_line_args.pop(0)
+            except IndexError:
+                sys.stderr.write(requires_an_argument % arg)
+                sys.exit(1)
+            else:
+                os.chdir(dir)
+        elif arg[:2] == '-C':
+            os.chdir(arg[2:])
+        elif arg[:12] == '--directory=':
+            os.chdir(arg[12:])
+    
+        else:
+            pass_through_args.append(arg)
+    
+    
+    scons_py = os.path.join('src', 'script', 'scons.py')
+    src_engine = os.path.join('src', 'engine')
+    MANIFEST_in = find(os.path.join(src_engine, 'MANIFEST.in'))
+    
+    files = [ scons_py ] + [os.path.join(src_engine, x)
+                            for x in parseManifestLines(os.path.join(script_dir, src_engine), open(MANIFEST_in).readlines())]
+    
+    for file in files:
+        src = find(file)
+        dst = os.path.join(bootstrap_dir, file)
+        if must_copy(dst, src):
+            dir = os.path.split(dst)[0]
+            if not os.path.isdir(dir):
+                os.makedirs(dir)
+            try: os.unlink(dst)
+            except: pass
+            open(dst, 'wb').write( open(src, 'rb').read() )
+    
+    if update_only:
+        sys.exit(0)
+    
+    args = [
+                sys.executable,
+                os.path.join(bootstrap_dir, scons_py)
+           ] + pass_through_args
+    
+    sys.stdout.write(" ".join(args) + '\n')
+    sys.stdout.flush()
+    
+    os.environ['SCONS_LIB_DIR'] = os.path.join(bootstrap_dir, src_engine)
+    
+    sys.exit(subprocess.Popen(args, env=os.environ).wait())
+
+if __name__ == "__main__":
+    main()
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4: