| #!/usr/bin/env python |
| # Copyright (c) 2012 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. |
| |
| # Script to install arm choot image for cross building of arm chrome on linux. |
| # This script can be run manually but is more often run as part of gclient |
| # hooks. When run from hooks this script should be a no-op on non-linux |
| # platforms. |
| |
| # The sysroot image could be constructed from scratch based on the current |
| # state or precise/arm but for consistency we currently use a pre-built root |
| # image which was originally designed for building trusted NaCl code. The image |
| # will normally need to be rebuilt every time chrome's build dependancies are |
| # changed. |
| |
| import os |
| import shutil |
| import subprocess |
| import sys |
| |
| |
| SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__)) |
| URL_PREFIX = 'https://commondatastorage.googleapis.com/nativeclient-archive2/toolchain' |
| REVISION = 8003 |
| |
| |
| def main(args): |
| if '--linux-only' in args: |
| # This argument is passed when run from the gclient hooks. |
| # In this case we return early on non-linux platforms |
| # or if GYP_DEFINES doesn't include target_arch=arm |
| if not sys.platform.startswith('linux'): |
| return 0 |
| |
| if "target_arch=arm" not in os.environ.get('GYP_DEFINES', ''): |
| return 0 |
| |
| src_root = os.path.dirname(os.path.dirname(SCRIPT_DIR)) |
| sysroot = os.path.join(src_root, 'arm-sysroot') |
| url = "%s/%s/naclsdk_linux_arm-trusted.tgz" % (URL_PREFIX, REVISION) |
| |
| stamp = os.path.join(sysroot, ".stamp") |
| if os.path.exists(stamp): |
| with open(stamp) as s: |
| if s.read() == url: |
| print "ARM root image already up-to-date: %s" % sysroot |
| return 0 |
| |
| print "Installing ARM root image: %s" % sysroot |
| if os.path.isdir(sysroot): |
| shutil.rmtree(sysroot) |
| os.mkdir(sysroot) |
| tarball = os.path.join(sysroot, 'naclsdk_linux_arm-trusted.tgz') |
| subprocess.check_call(['curl', '-L', url, '-o', tarball]) |
| subprocess.check_call(['tar', 'xf', tarball, '-C', sysroot]) |
| os.remove(tarball) |
| |
| with open(stamp, 'w') as s: |
| s.write(url) |
| return 0 |
| |
| |
| if __name__ == '__main__': |
| sys.exit(main(sys.argv[1:])) |