156 lines
5 KiB
Python
Executable file
156 lines
5 KiB
Python
Executable file
#!/usr/bin/env python
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# Copyright (c) 2013 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Install Debian sysroots for building chromium.
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"""
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# The sysroot is needed to ensure that binaries that get built will run on
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# the oldest stable version of Debian that we currently support.
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# This script can be run manually but is more often run as part of gclient
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# hooks. When run from hooks this script is a no-op on non-linux platforms.
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# The sysroot image could be constructed from scratch based on the current state
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# of the Debian archive but for consistency we use a pre-built root image (we
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# don't want upstream changes to Debian to effect the chromium build until we
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# choose to pull them in). The images will normally need to be rebuilt every
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# time chrome's build dependencies are changed but should also be updated
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# periodically to include upstream security fixes from Debian.
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import hashlib
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import json
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import platform
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import optparse
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import os
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import re
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import shutil
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import subprocess
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import sys
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import urllib2
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SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
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URL_PREFIX = 'http://s3.amazonaws.com'
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URL_PATH = 'gh-contractor-zcbenz/toolchain'
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VALID_ARCHS = ('arm', 'arm64', 'i386', 'amd64')
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class Error(Exception):
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pass
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def GetSha1(filename):
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sha1 = hashlib.sha1()
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with open(filename, 'rb') as f:
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while True:
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# Read in 1mb chunks, so it doesn't all have to be loaded into memory.
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chunk = f.read(1024*1024)
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if not chunk:
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break
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sha1.update(chunk)
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return sha1.hexdigest()
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def main(args):
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parser = optparse.OptionParser('usage: %prog [OPTIONS]', description=__doc__)
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parser.add_option('--running-as-hook', action='store_true',
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default=False, help='Used when running from gclient hooks.'
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' Installs default sysroot images.')
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parser.add_option('--arch', type='choice', choices=VALID_ARCHS,
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help='Sysroot architecture: %s' % ', '.join(VALID_ARCHS))
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parser.add_option('--all', action='store_true',
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help='Install all sysroot images (useful when updating the'
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' images)')
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options, _ = parser.parse_args(args)
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if options.running_as_hook and not sys.platform.startswith('linux'):
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return 0
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if options.running_as_hook:
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return 0
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elif options.arch:
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InstallDefaultSysrootForArch(options.arch)
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elif options.all:
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for arch in VALID_ARCHS:
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InstallDefaultSysrootForArch(arch)
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else:
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print 'You much specify either --arch, --all or --running-as-hook'
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return 1
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return 0
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def InstallDefaultSysrootForArch(target_arch):
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if target_arch not in VALID_ARCHS:
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raise Error('Unknown architecture: %s' % target_arch)
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if target_arch == 'arm64':
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InstallSysroot('Jessie', target_arch)
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else:
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InstallSysroot('Wheezy', target_arch)
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def InstallSysroot(target_platform, target_arch):
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# The sysroot directory should match the one specified in build/common.gypi.
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# TODO(thestig) Consider putting this elsewhere to avoid having to recreate
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# it on every build.
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linux_dir = os.path.dirname(SCRIPT_DIR)
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sysroots_file = os.path.join(SCRIPT_DIR, 'sysroots.json')
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sysroots = json.load(open(sysroots_file))
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sysroot_key = '%s_%s' % (target_platform.lower(), target_arch)
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if sysroot_key not in sysroots:
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raise Error('No sysroot for: %s %s' % (target_platform, target_arch))
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sysroot_dict = sysroots[sysroot_key]
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revision = sysroot_dict['Revision']
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tarball_filename = sysroot_dict['Tarball']
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tarball_sha1sum = sysroot_dict['Sha1Sum']
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sysroot = os.path.join(linux_dir, 'vendor', sysroot_dict['SysrootDir'])
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url = '%s/%s/%s/%s' % (URL_PREFIX, URL_PATH, revision, tarball_filename)
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stamp = os.path.join(sysroot, '.stamp')
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if os.path.exists(stamp):
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with open(stamp) as s:
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if s.read() == url:
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print '%s %s sysroot image already up to date: %s' % \
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(target_platform, target_arch, sysroot)
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return
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print 'Installing Debian %s %s root image: %s' % \
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(target_platform, target_arch, sysroot)
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if os.path.isdir(sysroot):
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shutil.rmtree(sysroot)
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os.mkdir(sysroot)
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tarball = os.path.join(sysroot, tarball_filename)
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print 'Downloading %s' % url
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sys.stdout.flush()
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sys.stderr.flush()
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for _ in range(3):
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try:
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response = urllib2.urlopen(url)
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with open(tarball, "wb") as f:
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f.write(response.read())
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break
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except Exception:
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pass
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else:
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raise Error('Failed to download %s' % url)
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sha1sum = GetSha1(tarball)
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if sha1sum != tarball_sha1sum:
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raise Error('Tarball sha1sum is wrong.'
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'Expected %s, actual: %s' % (tarball_sha1sum, sha1sum))
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subprocess.check_call(['tar', 'xf', tarball, '-C', sysroot])
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os.remove(tarball)
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with open(stamp, 'w') as s:
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s.write(url)
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if __name__ == '__main__':
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try:
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sys.exit(main(sys.argv[1:]))
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except Error as e:
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sys.stderr.write(str(e) + '\n')
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sys.exit(1)
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