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      1 #!/usr/bin/env python
      2 # Copyright 2013 The Chromium Authors. All rights reserved.
      3 # Use of this source code is governed by a BSD-style license that can be
      4 # found in the LICENSE file.
      5 
      6 """
      7 Replaces gyp files in tree with files from here that
      8 make the build use system libraries.
      9 """
     10 
     11 
     12 import optparse
     13 import os.path
     14 import shutil
     15 import sys
     16 
     17 
     18 REPLACEMENTS = {
     19   'use_system_expat': 'third_party/expat/expat.gyp',
     20   'use_system_ffmpeg': 'third_party/ffmpeg/ffmpeg.gyp',
     21   'use_system_flac': 'third_party/flac/flac.gyp',
     22   'use_system_harfbuzz': 'third_party/harfbuzz-ng/harfbuzz.gyp',
     23   'use_system_icu': 'third_party/icu/icu.gyp',
     24   'use_system_jsoncpp': 'third_party/jsoncpp/jsoncpp.gyp',
     25   'use_system_libevent': 'third_party/libevent/libevent.gyp',
     26   'use_system_libjpeg': 'third_party/libjpeg/libjpeg.gyp',
     27   'use_system_libpng': 'third_party/libpng/libpng.gyp',
     28   'use_system_libusb': 'third_party/libusb/libusb.gyp',
     29   'use_system_libvpx': 'third_party/libvpx/libvpx.gyp',
     30   'use_system_libwebp': 'third_party/libwebp/libwebp.gyp',
     31   'use_system_libxml': 'third_party/libxml/libxml.gyp',
     32   'use_system_libxslt': 'third_party/libxslt/libxslt.gyp',
     33   'use_system_opus': 'third_party/opus/opus.gyp',
     34   'use_system_re2': 'third_party/re2/re2.gyp',
     35   'use_system_snappy': 'third_party/snappy/snappy.gyp',
     36   'use_system_speex': 'third_party/speex/speex.gyp',
     37   'use_system_sqlite': 'third_party/sqlite/sqlite.gyp',
     38   'use_system_v8': 'v8/tools/gyp/v8.gyp',
     39   'use_system_zlib': 'third_party/zlib/zlib.gyp',
     40 }
     41 
     42 
     43 def DoMain(argv):
     44   my_dirname = os.path.dirname(__file__)
     45   source_tree_root = os.path.abspath(
     46     os.path.join(my_dirname, '..', '..', '..'))
     47 
     48   parser = optparse.OptionParser()
     49 
     50   # Accept arguments in gyp command-line syntax, so that the caller can re-use
     51   # command-line for this script and gyp.
     52   parser.add_option('-D', dest='defines', action='append')
     53 
     54   parser.add_option('--undo', action='store_true')
     55 
     56   options, args = parser.parse_args(argv)
     57 
     58   for flag, path in REPLACEMENTS.items():
     59     if '%s=1' % flag not in options.defines:
     60       continue
     61 
     62     if options.undo:
     63       # Restore original file, and also remove the backup.
     64       # This is meant to restore the source tree to its original state.
     65       os.rename(os.path.join(source_tree_root, path + '.orig'),
     66                 os.path.join(source_tree_root, path))
     67     else:
     68       # Create a backup copy for --undo.
     69       shutil.copyfile(os.path.join(source_tree_root, path),
     70                       os.path.join(source_tree_root, path + '.orig'))
     71 
     72       # Copy the gyp file from directory of this script to target path.
     73       shutil.copyfile(os.path.join(my_dirname, os.path.basename(path)),
     74                       os.path.join(source_tree_root, path))
     75 
     76   return 0
     77 
     78 
     79 if __name__ == '__main__':
     80   sys.exit(DoMain(sys.argv))
     81