1#!/usr/bin/env 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# Allow the user to override the directory where gyp should produce its output
27# Default to the current directory.
28gyp_output_dir = os.environ.get('SKIA_GYP_OUTPUT_DIR', '.')
29
30# Ensure we import our current gyp source's module, not any version
31# pre-installed in your PYTHONPATH.
32sys.path.insert(0, os.path.join(gyp_source_dir, 'pylib'))
33import gyp
34
35ENVVAR_GYP_GENERATORS = 'GYP_GENERATORS'
36ENVVAR_GYP_GENERATOR_FLAGS = 'GYP_GENERATOR_FLAGS'
37
38
39def additional_include_files(args=[]):
40  # Determine the include files specified on the command line.
41  # This doesn't cover all the different option formats you can use,
42  # but it's mainly intended to avoid duplicating flags on the automatic
43  # makefile regeneration which only uses this format.
44  specified_includes = set()
45  for arg in args:
46    if arg.startswith('-I') and len(arg) > 2:
47      specified_includes.add(os.path.realpath(arg[2:]))
48
49  result = []
50  def AddInclude(path):
51    if os.path.realpath(path) not in specified_includes:
52      result.append(path)
53
54  # Always include common.gypi.
55  # We do this, rather than including common.gypi explicitly in all our gyp
56  # files, so that gyp files we use but do not maintain (e.g.,
57  # third_party/externals/libjpeg/libjpeg.gyp) will include common.gypi too.
58  AddInclude(os.path.join(gyp_config_dir, 'common.gypi'))
59
60  return result
61
62# Return the directory where all the build files are to be written.
63def get_output_dir():
64  # SKIA_OUT can be any directory either as a child of the standard out/
65  # directory or any given location on the file system (e.g. /tmp/skia)
66  output_dir = os.getenv('SKIA_OUT')
67
68  if not output_dir:
69    return os.path.join(os.path.abspath(script_dir), 'out')
70
71  if os.path.isabs(output_dir):
72    return output_dir
73  else:
74    return os.path.join(os.path.abspath(script_dir), output_dir)
75
76
77if __name__ == '__main__':
78  args = sys.argv[1:]
79
80  if not os.getenv(ENVVAR_GYP_GENERATORS):
81    if sys.platform.startswith('darwin'):
82      default_gyp_generators = 'ninja,xcode'
83    elif sys.platform.startswith('win'):
84      default_gyp_generators = 'ninja,msvs-ninja'
85    elif sys.platform.startswith('cygwin'):
86      default_gyp_generators = 'ninja,msvs-ninja'
87    else:
88      default_gyp_generators = 'ninja'
89    os.environ[ENVVAR_GYP_GENERATORS] = default_gyp_generators
90    print ('%s environment variable not set, using default, %s' %
91           (ENVVAR_GYP_GENERATORS, default_gyp_generators))
92
93  vs2013_runtime_dll_dirs = None
94  if os.getenv('CHROME_HEADLESS', '0') == '1':
95    if sys.platform.startswith('win') or sys.platform.startswith('cygwin'):
96      chrome_path = os.getenv('CHROME_PATH')
97      os.chdir(chrome_path)
98      sys.path.append(os.path.join(chrome_path, 'build'))
99      sys.path.append(os.path.join(chrome_path, 'tools'))
100      import vs_toolchain
101      vs2013_runtime_dll_dirs = \
102          vs_toolchain.SetEnvironmentAndGetRuntimeDllDirs()
103
104  # Set CWD to the directory containing this script.
105  # This allows us to launch it from other directories, in spite of gyp's
106  # finickyness about the current working directory.
107  # See http://b.corp.google.com/issue?id=5019517 ('Linux make build
108  # (from out dir) no longer runs skia_gyp correctly')
109  os.chdir(os.path.abspath(script_dir))
110
111  # This could give false positives since it doesn't actually do real option
112  # parsing.  Oh well.
113  gyp_file_specified = False
114  for arg in args:
115    if arg.endswith('.gyp'):
116      gyp_file_specified = True
117      break
118
119  # If we didn't get a file, then fall back to assuming 'skia.gyp' from the
120  # same directory as the script.
121  # The gypfile must be passed as a relative path, not an absolute path,
122  # or else the gyp code doesn't write into the proper output dir.
123  if not gyp_file_specified:
124    args.append('skia.gyp')
125
126  args.extend(['-I' + i for i in additional_include_files(args)])
127  args.extend(['--depth', '.'])
128
129  # Tell gyp to write the build files into output_dir.
130  args.extend(['--generator-output', os.path.abspath(get_output_dir())])
131
132  # Tell ninja to write its output into the same directory.
133  args.extend(['-Goutput_dir=%s' % gyp_output_dir])
134
135  # By default, we build 'most' instead of 'all' or 'everything'. See skia.gyp.
136  args.extend(['-Gdefault_target=most'])
137
138  # Fail if any files specified in the project are missing
139  if sys.platform.startswith('win'):
140    gyp_generator_flags = os.getenv(ENVVAR_GYP_GENERATOR_FLAGS, '')
141    if not 'msvs_error_on_missing_sources' in gyp_generator_flags:
142      os.environ[ENVVAR_GYP_GENERATOR_FLAGS] = (
143          gyp_generator_flags + ' msvs_error_on_missing_sources=1')
144
145  # GYP is very conservative about how many concurrent linker calls it allows,
146  # to fit in RAM. We don't need to be nearly as conservative as Chrome.  We'll
147  # just turn that feature off.
148  os.environ['GYP_LINK_CONCURRENCY'] = '9001'
149
150  if '--dry-run' in args:
151    args.remove('--dry-run')
152    print gyp_source_dir, ' '.join(args)
153  else:
154    # Off we go...
155    res = gyp.main(args)
156    if res:
157      sys.exit(res)
158
159  # This code is copied from Chrome's build/gyp_chromium. It's not clear why
160  # the *_runtime variables are reversed.
161  if vs2013_runtime_dll_dirs:
162    x64_runtime, x86_runtime = vs2013_runtime_dll_dirs
163    vs_toolchain.CopyVsRuntimeDlls(
164        os.path.join(os.getenv('CHROME_PATH'), get_output_dir()),
165        (x86_runtime, x64_runtime))
166