gyp_skia revision c77256b83b92fef3a796ea7036bf725d51194c08 
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.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
31def additional_include_files(args=[]):
32  # Determine the include files specified on the command line.
33  # This doesn't cover all the different option formats you can use,
34  # but it's mainly intended to avoid duplicating flags on the automatic
35  # makefile regeneration which only uses this format.
36  specified_includes = set()
37  for arg in args:
38    if arg.startswith('-I') and len(arg) > 2:
39      specified_includes.add(os.path.realpath(arg[2:]))
40
41  result = []
42  def AddInclude(path):
43    if os.path.realpath(path) not in specified_includes:
44      result.append(path)
45
46  # Always include common.gypi.
47  # We do this, rather than including common.gypi explicitly in all our gyp
48  # files, so that gyp files we use but do not maintain (e.g.,
49  # third_party/externals/libjpeg/libjpeg.gyp) will include common.gypi too.
50  AddInclude(os.path.join(gyp_config_dir, 'common.gypi'))
51
52  return result
53
54# Return the directory where all generated files (including Makefiles) are to
55# be written.
56def get_output_dir():
57
58  # SKIA_OUT can be any directory either as a child of the standard out/
59  # directory or any given location on the file system (e.g. /tmp/skia)
60  output_dir = os.getenv('SKIA_OUT')
61
62  if not output_dir:
63    return os.path.join(os.path.abspath(script_dir), 'out')
64
65  if (os.name != 'posix' or
66     (sys.platform.startswith('darwin') and 
67      (not os.getenv('GYP_GENERATORS') or 
68       'make' not in os.getenv('GYP_GENERATORS')))):
69    print 'ERROR: variable SKIA_OUT is not valid on Mac (using xcodebuild)' \
70          ' or Windows'
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  # Set CWD to the directory containing this script.
83  # This allows us to launch it from other directories, in spite of gyp's
84  # finickyness about the current working directory.
85  # See http://b.corp.google.com/issue?id=5019517 ('Linux make build
86  # (from out dir) no longer runs skia_gyp correctly')
87  os.chdir(os.path.abspath(script_dir))
88
89  # This could give false positives since it doesn't actually do real option
90  # parsing.  Oh well.
91  gyp_file_specified = False
92  for arg in args:
93    if arg.endswith('.gyp'):
94      gyp_file_specified = True
95      break
96
97  # If we didn't get a file, then fall back to assuming 'skia.gyp' from the
98  # same directory as the script.
99  # The gypfile must be passed as a relative path, not an absolute path,
100  # or else the gyp code doesn't write into the proper output dir.
101  if not gyp_file_specified:
102    args.append('skia.gyp')
103
104  args.extend(['-I' + i for i in additional_include_files(args)])
105  args.extend(['--depth', '.'])
106
107  # Tell gyp to write the Makefiles into output_dir
108  args.extend(['--generator-output', os.path.abspath(get_output_dir())])
109
110  # Tell make to write its output into the same dir
111  args.extend(['-Goutput_dir=.'])
112
113  # By default, we build 'most' instead of 'all' or 'everything'. See skia.gyp.
114  args.extend(['-Gdefault_target=most'])
115
116  print 'Updating projects from gyp files...'
117  sys.stdout.flush()
118
119  # Off we go...
120  sys.exit(gyp.main(args))
121