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#!/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'
URL_PATH = 'nativeclient-archive2/toolchain'
REVISION = 10991
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/%s/naclsdk_linux_arm-trusted.tgz" % (URL_PREFIX,
URL_PATH, 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:]))
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