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1#!/usr/bin/env python
2#
3# Copyright 2012 the V8 project authors. All rights reserved.
4# Redistribution and use in source and binary forms, with or without
5# modification, are permitted provided that the following conditions are
6# met:
7#
8#     * Redistributions of source code must retain the above copyright
9#       notice, this list of conditions and the following disclaimer.
10#     * Redistributions in binary form must reproduce the above
11#       copyright notice, this list of conditions and the following
12#       disclaimer in the documentation and/or other materials provided
13#       with the distribution.
14#     * Neither the name of Google Inc. nor the names of its
15#       contributors may be used to endorse or promote products derived
16#       from this software without specific prior written permission.
17#
18# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29
30# This script is wrapper for V8 that adds some support for how GYP
31# is invoked by V8 beyond what can be done in the gclient hooks.
32
33import argparse
34import glob
35import gyp_environment
36import os
37import platform
38import shlex
39import subprocess
40import sys
41import vs_toolchain
42
43script_dir = os.path.dirname(os.path.realpath(__file__))
44v8_root = os.path.abspath(os.path.join(script_dir, os.pardir))
45
46sys.path.insert(0, os.path.join(v8_root, 'tools', 'gyp', 'pylib'))
47import gyp
48
49# Add paths so that pymod_do_main(...) can import files.
50sys.path.insert(
51    1, os.path.abspath(os.path.join(v8_root, 'tools', 'generate_shim_headers')))
52
53
54def GetOutputDirectory():
55  """Returns the output directory that GYP will use."""
56
57  # Handle command line generator flags.
58  parser = argparse.ArgumentParser()
59  parser.add_argument('-G', dest='genflags', default=[], action='append')
60  genflags = parser.parse_known_args()[0].genflags
61
62  # Handle generator flags from the environment.
63  genflags += shlex.split(os.environ.get('GYP_GENERATOR_FLAGS', ''))
64
65  needle = 'output_dir='
66  for item in genflags:
67    if item.startswith(needle):
68      return item[len(needle):]
69
70  return 'out'
71
72
73def additional_include_files(args=[]):
74  """
75  Returns a list of additional (.gypi) files to include, without
76  duplicating ones that are already specified on the command line.
77  """
78  # Determine the include files specified on the command line.
79  # This doesn't cover all the different option formats you can use,
80  # but it's mainly intended to avoid duplicating flags on the automatic
81  # makefile regeneration which only uses this format.
82  specified_includes = set()
83  for arg in args:
84    if arg.startswith('-I') and len(arg) > 2:
85      specified_includes.add(os.path.realpath(arg[2:]))
86
87  result = []
88  def AddInclude(path):
89    if os.path.realpath(path) not in specified_includes:
90      result.append(path)
91
92  # Always include standalone.gypi
93  AddInclude(os.path.join(v8_root, 'gypfiles', 'standalone.gypi'))
94
95  # Optionally add supplemental .gypi files if present.
96  supplements = glob.glob(os.path.join(v8_root, '*', 'supplement.gypi'))
97  for supplement in supplements:
98    AddInclude(supplement)
99
100  return result
101
102
103def run_gyp(args):
104  rc = gyp.main(args)
105
106  vs2013_runtime_dll_dirs = vs_toolchain.SetEnvironmentAndGetRuntimeDllDirs()
107  if vs2013_runtime_dll_dirs:
108    x64_runtime, x86_runtime = vs2013_runtime_dll_dirs
109    vs_toolchain.CopyVsRuntimeDlls(
110      os.path.join(v8_root, GetOutputDirectory()),
111      (x86_runtime, x64_runtime))
112
113  if rc != 0:
114    print 'Error running GYP'
115    sys.exit(rc)
116
117
118if __name__ == '__main__':
119  args = sys.argv[1:]
120
121  gyp_chromium_no_action = os.environ.get('GYP_CHROMIUM_NO_ACTION')
122  if gyp_chromium_no_action == '1':
123    print 'Skipping gyp_v8 due to GYP_CHROMIUM_NO_ACTION env var.'
124    sys.exit(0)
125
126  running_as_hook = '--running-as-hook'
127  if running_as_hook in args and gyp_chromium_no_action != '0':
128    print 'GYP is now disabled by default in runhooks.\n'
129    print 'If you really want to run this, either run '
130    print '`python gypfiles/gyp_v8` explicitly by hand '
131    print 'or set the environment variable GYP_CHROMIUM_NO_ACTION=0.'
132    sys.exit(0)
133
134  if running_as_hook in args:
135    args.remove(running_as_hook)
136
137  gyp_environment.set_environment()
138
139  # This could give false positives since it doesn't actually do real option
140  # parsing.  Oh well.
141  gyp_file_specified = False
142  for arg in args:
143    if arg.endswith('.gyp'):
144      gyp_file_specified = True
145      break
146
147  # If we didn't get a file, check an env var, and then fall back to
148  # assuming 'all.gyp' from the same directory as the script.
149  if not gyp_file_specified:
150    gyp_file = os.environ.get('V8_GYP_FILE')
151    if gyp_file:
152      # Note that V8_GYP_FILE values can't have backslashes as
153      # path separators even on Windows due to the use of shlex.split().
154      args.extend(shlex.split(gyp_file))
155    else:
156      args.append(os.path.join(script_dir, 'all.gyp'))
157
158  args.extend(['-I' + i for i in additional_include_files(args)])
159
160  # There shouldn't be a circular dependency relationship between .gyp files
161  args.append('--no-circular-check')
162
163  # Set the GYP DEPTH variable to the root of the V8 project.
164  args.append('--depth=' + os.path.relpath(v8_root))
165
166  # If V8_GYP_SYNTAX_CHECK is set to 1, it will invoke gyp with --check
167  # to enfore syntax checking.
168  syntax_check = os.environ.get('V8_GYP_SYNTAX_CHECK')
169  if syntax_check and int(syntax_check):
170    args.append('--check')
171
172  print 'Updating projects from gyp files...'
173  sys.stdout.flush()
174
175  # Generate for the architectures supported on the given platform.
176  gyp_args = list(args)
177  gyp_args.extend(['-D', 'gyp_output_dir=' + GetOutputDirectory()])
178  gyp_generators = os.environ.get('GYP_GENERATORS', '')
179  if platform.system() == 'Linux' and gyp_generators != 'ninja':
180    # Work around for crbug.com/331475.
181    for f in glob.glob(os.path.join(v8_root, 'out', 'Makefile.*')):
182      os.unlink(f)
183    # --generator-output defines where the Makefile goes.
184    gyp_args.append('--generator-output=out')
185    # -Goutput_dir defines where the build output goes, relative to the
186    # Makefile. Set it to . so that the build output doesn't end up in out/out.
187    gyp_args.append('-Goutput_dir=.')
188
189  gyp_defines = os.environ.get('GYP_DEFINES', '')
190
191  # Automatically turn on crosscompile support for platforms that need it.
192  if all(('ninja' in gyp_generators,
193          'OS=android' in gyp_defines,
194          'GYP_CROSSCOMPILE' not in os.environ)):
195    os.environ['GYP_CROSSCOMPILE'] = '1'
196
197  run_gyp(gyp_args)
198