install-debian.wheezy.sysroot.py revision 868fa2fe829687343ffae624259930155e16dbd8 
1#!/usr/bin/env python
2# Copyright (c) 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# Script to install a Debian Wheezy sysroot for making official Google Chrome
7# Linux builds.
8# The sysroot is needed to make Chrome work for Debian Wheezy.
9# This script can be run manually but is more often run as part of gclient
10# hooks. When run from hooks this script should be a no-op on non-linux
11# platforms.
12
13# The sysroot image could be constructed from scratch based on the current
14# state or Debian Wheezy but for consistency we currently use a pre-built root
15# image. The image will normally need to be rebuilt every time chrome's build
16# dependancies are changed.
17
18import platform
19import optparse
20import os
21import re
22import shutil
23import subprocess
24import sys
25
26
27SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
28URL_PREFIX = 'https://commondatastorage.googleapis.com'
29URL_PATH = 'chrome-linux-sysroot/toolchain'
30REVISION = 36982
31TARBALL_AMD64 = 'debian_wheezy_amd64_sysroot.tgz'
32TARBALL_I386 = 'debian_wheezy_i386_sysroot.tgz'
33SYSROOT_DIR_AMD64 = 'debian_wheezy_amd64-sysroot'
34SYSROOT_DIR_I386 = 'debian_wheezy_i386-sysroot'
35
36
37def main(args):
38  if options.arch not in ['amd64', 'i386']:
39    print 'Unknown architecture: %s' % options.arch
40    return 1
41
42  if options.linux_only:
43    # This argument is passed when run from the gclient hooks.
44    # In this case we return early on non-linux platforms.
45    if not sys.platform.startswith('linux'):
46      return 0
47
48    # Only install the sysroot for an Official Chrome Linux build.
49    defined = ['branding=Chrome', 'buildtype=Official']
50    undefined = ['chromeos=1']
51    gyp_defines = os.environ.get('GYP_DEFINES', '')
52    for option in defined:
53      if option not in gyp_defines:
54        return 0
55    for option in undefined:
56      if option in gyp_defines:
57        return 0
58
59    # Check for optional target_arch and only install for that architecture.
60    # If target_arch is not specified, then only install for the host
61    # architecture.
62    host_arch = ''
63    if 'target_arch=x64' in gyp_defines:
64      host_arch = 'amd64'
65    elif 'target_arch=ia32' in gyp_defines:
66      host_arch = 'i386'
67    else:
68      # Figure out host arch, like the host_arch variable in build/common.gypi.
69      machine_type = platform.machine()
70      if machine_type in ['amd64', 'x86_64']:
71        host_arch = 'amd64'
72      elif re.match('(i[3-6]86|i86pc)$', machine_type):
73        host_arch = 'i386'
74    if host_arch != options.arch:
75      return 0
76
77  # The sysroot directory should match the one specified in build/common.gypi.
78  # TODO(thestig) Consider putting this else where to avoid having to recreate
79  # it on every build.
80  linux_dir = os.path.dirname(SCRIPT_DIR)
81  if options.arch == 'amd64':
82    sysroot = os.path.join(linux_dir, SYSROOT_DIR_AMD64)
83    tarball_filename = TARBALL_AMD64
84  else:
85    sysroot = os.path.join(linux_dir, SYSROOT_DIR_I386)
86    tarball_filename = TARBALL_I386
87  url = '%s/%s/%s/%s' % (URL_PREFIX, URL_PATH, REVISION, tarball_filename)
88
89  stamp = os.path.join(sysroot, '.stamp')
90  if os.path.exists(stamp):
91    with open(stamp) as s:
92      if s.read() == url:
93        print 'Debian Wheezy %s root image already up-to-date: %s' % \
94            (options.arch, sysroot)
95        return 0
96
97  print 'Installing Debian Wheezy %s root image: %s' % (options.arch, sysroot)
98  if os.path.isdir(sysroot):
99    shutil.rmtree(sysroot)
100  os.mkdir(sysroot)
101  tarball = os.path.join(sysroot, tarball_filename)
102  subprocess.check_call(['curl', '-L', url, '-o', tarball])
103  subprocess.check_call(['tar', 'xf', tarball, '-C', sysroot])
104  os.remove(tarball)
105
106  with open(stamp, 'w') as s:
107    s.write(url)
108  return 0
109
110
111if __name__ == '__main__':
112  parser = optparse.OptionParser('usage: %prog [OPTIONS]')
113  parser.add_option('', '--linux-only', dest='linux_only', action='store_true',
114                    default=False, help='Only install sysroot for official '
115                                        'Linux builds')
116  parser.add_option('', '--arch', dest='arch',
117                    help='Sysroot architecture, i386 or amd64')
118  options, args = parser.parse_args()
119  sys.exit(main(options))
120