| #!/usr/bin/env python |
| # Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """Install Debian sysroots for building chromium. |
| """ |
| |
| # The sysroot is needed to ensure that binaries that get built will run on |
| # the oldest stable version of Debian that we currently support. |
| # This script can be run manually but is more often run as part of gclient |
| # hooks. When run from hooks this script is a no-op on non-linux platforms. |
| |
| # The sysroot image could be constructed from scratch based on the current state |
| # of the Debian archive but for consistency we use a pre-built root image (we |
| # don't want upstream changes to Debian to effect the chromium build until we |
| # choose to pull them in). The images will normally need to be rebuilt every |
| # time chrome's build dependencies are changed but should also be updated |
| # periodically to include upstream security fixes from Debian. |
| |
| import hashlib |
| import json |
| import platform |
| import optparse |
| import os |
| import re |
| import shutil |
| import subprocess |
| import sys |
| import urllib2 |
| |
| SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__)) |
| sys.path.append(os.path.dirname(os.path.dirname(SCRIPT_DIR))) |
| import detect_host_arch |
| import gyp_chromium |
| import gyp_environment |
| |
| |
| URL_PREFIX = 'https://commondatastorage.googleapis.com' |
| URL_PATH = 'chrome-linux-sysroot/toolchain' |
| |
| VALID_ARCHS = ('arm', 'arm64', 'i386', 'amd64', 'mips', 'mips64el') |
| |
| |
| class Error(Exception): |
| pass |
| |
| |
| def GetSha1(filename): |
| sha1 = hashlib.sha1() |
| with open(filename, 'rb') as f: |
| while True: |
| # Read in 1mb chunks, so it doesn't all have to be loaded into memory. |
| chunk = f.read(1024*1024) |
| if not chunk: |
| break |
| sha1.update(chunk) |
| return sha1.hexdigest() |
| |
| |
| def DetectHostArch(): |
| # Figure out host arch using build/detect_host_arch.py and |
| # set target_arch to host arch |
| detected_host_arch = detect_host_arch.HostArch() |
| if detected_host_arch == 'x64': |
| return 'amd64' |
| if detected_host_arch == 'ia32': |
| return 'i386' |
| if detected_host_arch == 'arm': |
| return 'arm' |
| if detected_host_arch == 'arm64': |
| return 'arm64' |
| if detected_host_arch == 'mips': |
| return 'mips' |
| if detected_host_arch == 'mips64': |
| return 'mips64el' |
| if detected_host_arch == 'ppc': |
| return 'ppc' |
| if detected_host_arch == 's390': |
| return 's390' |
| |
| raise Error('Unrecognized host arch: %s' % detected_host_arch) |
| |
| |
| def DetectTargetArch(): |
| """Attempt for determine target architecture. |
| |
| This works by looking for target_arch in GYP_DEFINES. |
| """ |
| # TODO(agrieve): Make this script not depend on GYP_DEFINES so that it works |
| # with GN as well. |
| gyp_environment.SetEnvironment() |
| supplemental_includes = gyp_chromium.GetSupplementalFiles() |
| gyp_defines = gyp_chromium.GetGypVars(supplemental_includes) |
| target_arch = gyp_defines.get('target_arch') |
| if target_arch == 'x64': |
| return 'amd64' |
| if target_arch == 'ia32': |
| return 'i386' |
| if target_arch == 'arm': |
| return 'arm' |
| if target_arch == 'arm64': |
| return 'arm64' |
| if target_arch == 'mipsel': |
| return 'mips' |
| if target_arch == 'mips64el': |
| return 'mips64el' |
| |
| return None |
| |
| |
| def InstallDefaultSysroots(host_arch): |
| """Install the default set of sysroot images. |
| |
| This includes at least the sysroot for host architecture, and the 32-bit |
| sysroot for building the v8 snapshot image. It can also include the cross |
| compile sysroot for ARM/MIPS if cross compiling environment can be detected. |
| |
| Another reason we're installing this by default is so that developers can |
| compile and run on our supported platforms without having to worry about |
| flipping things back and forth and whether the sysroots have been downloaded |
| or not. |
| """ |
| InstallDefaultSysrootForArch(host_arch) |
| |
| if host_arch == 'amd64': |
| InstallDefaultSysrootForArch('i386') |
| |
| # If we can detect a non-standard target_arch such as ARM or MIPS, |
| # then install the sysroot too. Don't attempt to install arm64 |
| # since this is currently and android-only architecture. |
| target_arch = DetectTargetArch() |
| if target_arch and target_arch not in (host_arch, 'i386'): |
| InstallDefaultSysrootForArch(target_arch) |
| |
| |
| def main(args): |
| parser = optparse.OptionParser('usage: %prog [OPTIONS]', description=__doc__) |
| parser.add_option('--running-as-hook', action='store_true', |
| default=False, help='Used when running from gclient hooks.' |
| ' Installs default sysroot images.') |
| parser.add_option('--arch', type='choice', choices=VALID_ARCHS, |
| help='Sysroot architecture: %s' % ', '.join(VALID_ARCHS)) |
| parser.add_option('--all', action='store_true', |
| help='Install all sysroot images (useful when updating the' |
| ' images)') |
| options, _ = parser.parse_args(args) |
| if options.running_as_hook and not sys.platform.startswith('linux'): |
| return 0 |
| |
| if options.running_as_hook: |
| host_arch = DetectHostArch() |
| # PPC/s390 don't use sysroot, see http://crbug.com/646169 |
| if host_arch in ['ppc','s390']: |
| return 0 |
| InstallDefaultSysroots(host_arch) |
| elif options.arch: |
| InstallDefaultSysrootForArch(options.arch) |
| elif options.all: |
| for arch in VALID_ARCHS: |
| InstallDefaultSysrootForArch(arch) |
| else: |
| print 'You much specify either --arch, --all or --running-as-hook' |
| return 1 |
| |
| return 0 |
| |
| |
| def InstallDefaultSysrootForArch(target_arch): |
| if target_arch not in VALID_ARCHS: |
| raise Error('Unknown architecture: %s' % target_arch) |
| InstallSysroot('Stretch', target_arch) |
| |
| |
| def InstallSysroot(target_platform, target_arch): |
| # The sysroot directory should match the one specified in |
| # build/config/sysroot.gni. |
| # TODO(thestig) Consider putting this elsewhere to avoid having to recreate |
| # it on every build. |
| linux_dir = os.path.dirname(SCRIPT_DIR) |
| |
| sysroots_file = os.path.join(SCRIPT_DIR, 'sysroots.json') |
| sysroots = json.load(open(sysroots_file)) |
| sysroot_key = '%s_%s' % (target_platform.lower(), target_arch) |
| if sysroot_key not in sysroots: |
| raise Error('No sysroot for: %s %s' % (target_platform, target_arch)) |
| sysroot_dict = sysroots[sysroot_key] |
| revision = sysroot_dict['Revision'] |
| tarball_filename = sysroot_dict['Tarball'] |
| tarball_sha1sum = sysroot_dict['Sha1Sum'] |
| sysroot = os.path.join(linux_dir, sysroot_dict['SysrootDir']) |
| |
| url = '%s/%s/%s/%s' % (URL_PREFIX, URL_PATH, revision, tarball_filename) |
| |
| stamp = os.path.join(sysroot, '.stamp') |
| if os.path.exists(stamp): |
| with open(stamp) as s: |
| if s.read() == url: |
| return |
| |
| print 'Installing Debian %s %s root image: %s' % \ |
| (target_platform, target_arch, sysroot) |
| if os.path.isdir(sysroot): |
| shutil.rmtree(sysroot) |
| os.mkdir(sysroot) |
| tarball = os.path.join(sysroot, tarball_filename) |
| print 'Downloading %s' % url |
| sys.stdout.flush() |
| sys.stderr.flush() |
| for _ in range(3): |
| try: |
| response = urllib2.urlopen(url) |
| with open(tarball, "wb") as f: |
| f.write(response.read()) |
| break |
| except: |
| pass |
| else: |
| raise Error('Failed to download %s' % url) |
| sha1sum = GetSha1(tarball) |
| if sha1sum != tarball_sha1sum: |
| raise Error('Tarball sha1sum is wrong.' |
| 'Expected %s, actual: %s' % (tarball_sha1sum, sha1sum)) |
| subprocess.check_call(['tar', 'xf', tarball, '-C', sysroot]) |
| os.remove(tarball) |
| |
| with open(stamp, 'w') as s: |
| s.write(url) |
| |
| |
| if __name__ == '__main__': |
| try: |
| sys.exit(main(sys.argv[1:])) |
| except Error as e: |
| sys.stderr.write(str(e) + '\n') |
| sys.exit(1) |