chrome/installer/linux/sysroot_scripts/install-debian.wheezy.sysroot.py

   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
  18 import hashlib
  19 import platform
  20 import optparse
  21 import os
  22 import re
  23 import shutil
  24 import subprocess
  25 import sys
  26
  27
  28 SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
  29 URL_PREFIX = 'https://commondatastorage.googleapis.com'
  30 URL_PATH = 'chrome-linux-sysroot/toolchain'
  31 REVISION = 264817
  32 TARBALL_AMD64 = 'debian_wheezy_amd64_sysroot.tgz'
  33 TARBALL_I386 = 'debian_wheezy_i386_sysroot.tgz'
  34 TARBALL_AMD64_SHA1SUM = '74b7231e12aaf45c5c5489d9aebb56bd6abb3653'
  35 TARBALL_I386_SHA1SUM = 'fe3d284926839683b00641bc66c9023f872ea4b4'
  36 SYSROOT_DIR_AMD64 = 'debian_wheezy_amd64-sysroot'
  37 SYSROOT_DIR_I386 = 'debian_wheezy_i386-sysroot'
  38
  39
  40 def get_sha1(filename):
  41   sha1 = hashlib.sha1()
  42   with open(filename, 'rb') as f:
  43     while True:
  44       # Read in 1mb chunks, so it doesn't all have to be loaded into memory.
  45       chunk = f.read(1024*1024)
  46       if not chunk:
  47         break
  48       sha1.update(chunk)
  49   return sha1.hexdigest()
  50
  51
  52 def main(args):
  53   if options.arch not in ['amd64', 'i386']:
  54     print 'Unknown architecture: %s' % options.arch
  55     return 1
  56
  57   if options.linux_only:
  58     # This argument is passed when run from the gclient hooks.
  59     # In this case we return early on non-linux platforms.
  60     if not sys.platform.startswith('linux'):
  61       return 0
  62
  63     # Only install the sysroot for an Official Chrome Linux build.
  64     defined = ['branding=Chrome', 'buildtype=Official']
  65     undefined = ['chromeos=1']
  66     gyp_defines = os.environ.get('GYP_DEFINES', '')
  67     for option in defined:
  68       if option not in gyp_defines:
  69         return 0
  70     for option in undefined:
  71       if option in gyp_defines:
  72         return 0
  73
  74     # Check for optional target_arch and only install for that architecture.
  75     # If target_arch is not specified, then only install for the host
  76     # architecture.
  77     host_arch = ''
  78     if 'target_arch=x64' in gyp_defines:
  79       host_arch = 'amd64'
  80     elif 'target_arch=ia32' in gyp_defines:
  81       host_arch = 'i386'
  82     else:
  83       # Figure out host arch using build/detect_host_arch.py.
  84       SRC_DIR = os.path.abspath(
  85           os.path.join(SCRIPT_DIR, '..', '..', '..', '..'))
  86       sys.path.append(os.path.join(SRC_DIR, 'build'))
  87       import detect_host_arch
  88
  89       detected_host_arch = detect_host_arch.HostArch()
  90       if detected_host_arch == 'x64':
  91         host_arch = 'amd64'
  92       elif detected_host_arch == 'ia32':
  93         host_arch = 'i386'
  94     if host_arch != options.arch:
  95       return 0
  96
  97   # The sysroot directory should match the one specified in build/common.gypi.
  98   # TODO(thestig) Consider putting this else where to avoid having to recreate
  99   # it on every build.
 100   linux_dir = os.path.dirname(SCRIPT_DIR)
 101   if options.arch == 'amd64':
 102     sysroot = os.path.join(linux_dir, SYSROOT_DIR_AMD64)
 103     tarball_filename = TARBALL_AMD64
 104     tarball_sha1sum = TARBALL_AMD64_SHA1SUM
 105   else:
 106     sysroot = os.path.join(linux_dir, SYSROOT_DIR_I386)
 107     tarball_filename = TARBALL_I386
 108     tarball_sha1sum = TARBALL_I386_SHA1SUM
 109   url = '%s/%s/%s/%s' % (URL_PREFIX, URL_PATH, REVISION, tarball_filename)
 110
 111   stamp = os.path.join(sysroot, '.stamp')
 112   if os.path.exists(stamp):
 113     with open(stamp) as s:
 114       if s.read() == url:
 115         print 'Debian Wheezy %s root image already up-to-date: %s' % \
 116             (options.arch, sysroot)
 117         return 0
 118
 119   print 'Installing Debian Wheezy %s root image: %s' % (options.arch, sysroot)
 120   if os.path.isdir(sysroot):
 121     shutil.rmtree(sysroot)
 122   os.mkdir(sysroot)
 123   tarball = os.path.join(sysroot, tarball_filename)
 124   subprocess.check_call(['curl', '-L', url, '-o', tarball])
 125   sha1sum = get_sha1(tarball)
 126   if sha1sum != tarball_sha1sum:
 127     print 'Tarball sha1sum is wrong.'
 128     print 'Expected %s, actual: %s' % (tarball_sha1sum, sha1sum)
 129     return 1
 130   subprocess.check_call(['tar', 'xf', tarball, '-C', sysroot])
 131   os.remove(tarball)
 132
 133   with open(stamp, 'w') as s:
 134     s.write(url)
 135   return 0
 136
 137
 138 if __name__ == '__main__':
 139   parser = optparse.OptionParser('usage: %prog [OPTIONS]')
 140   parser.add_option('', '--linux-only', dest='linux_only', action='store_true',
 141                     default=False, help='Only install sysroot for official '
 142                                         'Linux builds')
 143   parser.add_option('', '--arch', dest='arch',
 144                     help='Sysroot architecture, i386 or amd64')
 145   options, args = parser.parse_args()
 146   sys.exit(main(options))