gyp_skia revision a5c2824bd3a11364f3a4a8464538ab8a9cb15d0a 
1#!/usr/bin/python
2
3# Copyright 2011 The Android Open Source Project
4#
5# Use of this source code is governed by a BSD-style license that can be
6# found in the LICENSE file.
7
8# This script is a wrapper which invokes gyp with the correct --depth argument,
9# and supports the automatic regeneration of build files if all.gyp is
10# changed (Linux-only).
11
12import glob
13import os
14import platform
15import shlex
16import sys
17
18script_dir = os.path.abspath(os.path.dirname(__file__))
19
20# Directory within which we can find the gyp source.
21gyp_source_dir = os.path.join(script_dir, 'third_party', 'externals', 'gyp')
22
23# Directory within which we can find most of Skia's gyp configuration files.
24gyp_config_dir = os.path.join(script_dir, 'gyp')
25
26# Ensure we import our current gyp source's module, not any version
27# pre-installed in your PYTHONPATH.
28sys.path.insert(0, os.path.join(gyp_source_dir, 'pylib'))
29import gyp
30
31ENVVAR_GYP_GENERATORS = 'GYP_GENERATORS'
32ENVVAR_GYP_GENERATOR_FLAGS = 'GYP_GENERATOR_FLAGS'
33
34
35def additional_include_files(args=[]):
36  # Determine the include files specified on the command line.
37  # This doesn't cover all the different option formats you can use,
38  # but it's mainly intended to avoid duplicating flags on the automatic
39  # makefile regeneration which only uses this format.
40  specified_includes = set()
41  for arg in args:
42    if arg.startswith('-I') and len(arg) > 2:
43      specified_includes.add(os.path.realpath(arg[2:]))
44
45  result = []
46  def AddInclude(path):
47    if os.path.realpath(path) not in specified_includes:
48      result.append(path)
49
50  # Always include common.gypi.
51  # We do this, rather than including common.gypi explicitly in all our gyp
52  # files, so that gyp files we use but do not maintain (e.g.,
53  # third_party/externals/libjpeg/libjpeg.gyp) will include common.gypi too.
54  AddInclude(os.path.join(gyp_config_dir, 'common.gypi'))
55
56  return result
57
58# Return the directory where all the build files are to be written.
59def get_output_dir():
60  # SKIA_OUT can be any directory either as a child of the standard out/
61  # directory or any given location on the file system (e.g. /tmp/skia)
62  output_dir = os.getenv('SKIA_OUT')
63
64  if not output_dir:
65    return os.path.join(os.path.abspath(script_dir), 'out')
66
67  if (sys.platform.startswith('darwin') and
68      (not os.getenv(ENVVAR_GYP_GENERATORS) or
69       'xcode' in os.getenv(ENVVAR_GYP_GENERATORS))):
70    print 'ERROR: variable SKIA_OUT is not valid on Mac (using xcodebuild)'
71    sys.exit(-1);
72
73  if os.path.isabs(output_dir):
74    return output_dir
75  else:
76    return os.path.join(os.path.abspath(script_dir), output_dir)
77
78
79if __name__ == '__main__':
80  args = sys.argv[1:]
81
82  if not os.getenv(ENVVAR_GYP_GENERATORS):
83    print ('%s environment variable not set, using default' %
84           ENVVAR_GYP_GENERATORS)
85    if sys.platform.startswith('darwin'):
86      default_gyp_generators = 'ninja,xcode'
87    elif sys.platform.startswith('win'):
88      default_gyp_generators = 'ninja,msvs-ninja'
89    elif sys.platform.startswith('cygwin'):
90      default_gyp_generators = 'ninja,msvs-ninja'
91    else:
92      default_gyp_generators = 'ninja'
93    os.environ[ENVVAR_GYP_GENERATORS] = default_gyp_generators
94  print '%s is "%s"' % (ENVVAR_GYP_GENERATORS, os.getenv(ENVVAR_GYP_GENERATORS))
95
96  # Set CWD to the directory containing this script.
97  # This allows us to launch it from other directories, in spite of gyp's
98  # finickyness about the current working directory.
99  # See http://b.corp.google.com/issue?id=5019517 ('Linux make build
100  # (from out dir) no longer runs skia_gyp correctly')
101  os.chdir(os.path.abspath(script_dir))
102
103  # This could give false positives since it doesn't actually do real option
104  # parsing.  Oh well.
105  gyp_file_specified = False
106  for arg in args:
107    if arg.endswith('.gyp'):
108      gyp_file_specified = True
109      break
110
111  # If we didn't get a file, then fall back to assuming 'skia.gyp' from the
112  # same directory as the script.
113  # The gypfile must be passed as a relative path, not an absolute path,
114  # or else the gyp code doesn't write into the proper output dir.
115  if not gyp_file_specified:
116    args.append('skia.gyp')
117
118  args.extend(['-I' + i for i in additional_include_files(args)])
119  args.extend(['--depth', '.'])
120
121  # Tell gyp to write the build files into output_dir.
122  args.extend(['--generator-output', os.path.abspath(get_output_dir())])
123
124  # Tell ninja to write its output into the same directory.
125  args.extend(['-Goutput_dir=.'])
126
127  # By default, we build 'most' instead of 'all' or 'everything'. See skia.gyp.
128  args.extend(['-Gdefault_target=most'])
129
130  # Fail if any files specified in the project are missing
131  if sys.platform.startswith('win'):
132    gyp_generator_flags = os.getenv(ENVVAR_GYP_GENERATOR_FLAGS, '')
133    if not 'msvs_error_on_missing_sources' in gyp_generator_flags:
134      os.environ[ENVVAR_GYP_GENERATOR_FLAGS] = (
135          gyp_generator_flags + ' msvs_error_on_missing_sources=1')
136
137  print 'Updating projects from gyp files...'
138  sys.stdout.flush()
139
140  if '--dry-run' in args:
141    args.remove('--dry-run')
142    print gyp_source_dir, ' '.join(args)
143  else:
144    # Off we go...
145    sys.exit(gyp.main(args))
146