Merge ARM sysroot install script with existing x86/amd64 one.

build/linux/install-arm-sysroot.py

 #!/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 root 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.
-
-Steps to rebuild the arm sysroot image:
-
-- cd $SRC/native_client
-- ./tools/trusted_cross_toolchains/trusted-toolchain-creator.armel.precise.sh \
-    UpdatePackageLists
-- ./tools/trusted_cross_toolchains/trusted-toolchain-creator.armel.precise.sh \
-    BuildJail $SRC/out/arm-sysroot.tar.gz
-- gsutil cp -a public-read $SRC/out/arm-sysroot.tar.gz \
-    nativeclient-archive2/toolchain/$NACL_REV/sysroot-arm-trusted.tgz
-"""
-
-# TODO(sbc): merge this script into:
-#  chrome/installer/linux/sysroot_scripts/install-debian.wheezy.sysroot.py
-
-import hashlib
-import os
-import shutil
-import subprocess
 import sys
 
-
-SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
-URL_PREFIX = 'https://storage.googleapis.com'
-URL_PATH = 'chrome-linux-sysroot/toolchain'
-REVISION = 285950
-TARBALL = 'debian_wheezy_arm_sysroot.tgz'
-TARBALL_SHA1SUM = 'fc2f54db168887c5190c4c6686c869bedf668b4e'
-
-
-def get_sha1(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 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/%s" % (URL_PREFIX, URL_PATH, REVISION, TARBALL)
-
-  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, TARBALL)
-  curl = ['curl', '--fail', '-L', url, '-o', tarball]
-  if os.isatty(sys.stdout.fileno()):
-    curl.append('--progress')
-  else:
-    curl.append('--silent')
-  subprocess.check_call(curl)
-  sha1sum = get_sha1(tarball)
-  if sha1sum != TARBALL_SHA1SUM:
-    print 'Tarball sha1sum is wrong.'
-    print 'Expected %s, actual: %s' % (TARBALL_SHA1SUM, sha1sum)
-    return 1
-  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:]))
+msg = '''\
+ERROR: This script has merged with install-debian.wheezy.sysroot.py.
+Please use that instead (with --arch=arm).
+'''
+sys.stderr.write(msg)