Add support for installing ARM64 sysroot

build/linux/sysroot_scripts/install-sysroot.py

 #!/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 Wheezy sysroots for building chromium.
 """
 
 # The sysroot is needed to ensure that binaries will run on Debian Wheezy,
 # the oldest supported linux distribution.  This script can be run manually but
@@ skipping 18 matching lines @@
 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'
 REVISION_AMD64 = 'c52471d9dec240c8d0a88fa98aa1eefeee32e22f'
 REVISION_ARM = 'c52471d9dec240c8d0a88fa98aa1eefeee32e22f'
+REVISION_ARM64 = 'bd10c315594d2a20e31a94a7a6c7adb9a0961c56'
 REVISION_I386 = 'c52471d9dec240c8d0a88fa98aa1eefeee32e22f'
 REVISION_MIPS = 'c52471d9dec240c8d0a88fa98aa1eefeee32e22f'
 TARBALL_AMD64 = 'debian_wheezy_amd64_sysroot.tgz'
 TARBALL_ARM = 'debian_wheezy_arm_sysroot.tgz'
+TARBALL_ARM64 = 'debian_jessie_arm64_sysroot.tgz'
 TARBALL_I386 = 'debian_wheezy_i386_sysroot.tgz'
 TARBALL_MIPS = 'debian_wheezy_mips_sysroot.tgz'
 TARBALL_AMD64_SHA1SUM = 'ca4ed6e7c9e333b046be19d38584a11f6785eea6'
 TARBALL_ARM_SHA1SUM = '1fab0c2b1e93a933ddc593df3b43872b0ba5ded2'
+TARBALL_ARM64_SHA1SUM = '0db3be51912e0be46bb1b906fc196c5c1dfc090f'
 TARBALL_I386_SHA1SUM = '80c48c303319af2284e4a104c882d888af75ba81'
 TARBALL_MIPS_SHA1SUM = '01da32a35288627e05cfca193b7f3659531c6f7d'
 SYSROOT_DIR_AMD64 = 'debian_wheezy_amd64-sysroot'
 SYSROOT_DIR_ARM = 'debian_wheezy_arm-sysroot'
+SYSROOT_DIR_ARM64 = 'debian_jessie_arm64-sysroot'
 SYSROOT_DIR_I386 = 'debian_wheezy_i386-sysroot'
 SYSROOT_DIR_MIPS = 'debian_wheezy_mips-sysroot'
 
-valid_archs = ('arm', 'i386', 'amd64', 'mips')
+valid_archs = ('arm', 'arm64', 'i386', 'amd64', 'mips')
 
 
 class Error(Exception):
   pass
 
 
 def GetSha1(filename):
   sha1 = hashlib.sha1()
   with open(filename, 'rb') as f:
     while True:
@@ skipping 57 matching lines @@
   InstallSysroot(host_arch)
 
   if host_arch == 'amd64':
     InstallSysroot('i386')
 
   # Finally, if we can detect a non-standard target_arch such as ARM or
   # MIPS, then install the sysroot too.
   # Don't attampt 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', 'arm64'):
+  if target_arch and target_arch not in (host_arch, 'i386'):
     InstallSysroot(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))
@@ skipping 20 matching lines @@
   if target_arch == 'amd64':
     sysroot = os.path.join(linux_dir, SYSROOT_DIR_AMD64)
     tarball_filename = TARBALL_AMD64
     tarball_sha1sum = TARBALL_AMD64_SHA1SUM
     revision = REVISION_AMD64
   elif target_arch == 'arm':
     sysroot = os.path.join(linux_dir, SYSROOT_DIR_ARM)
     tarball_filename = TARBALL_ARM
     tarball_sha1sum = TARBALL_ARM_SHA1SUM
     revision = REVISION_ARM
+  elif target_arch == 'arm64':
+    sysroot = os.path.join(linux_dir, SYSROOT_DIR_ARM64)
+    tarball_filename = TARBALL_ARM64
+    tarball_sha1sum = TARBALL_ARM64_SHA1SUM
+    revision = REVISION_ARM64
   elif target_arch == 'i386':
     sysroot = os.path.join(linux_dir, SYSROOT_DIR_I386)
     tarball_filename = TARBALL_I386
     tarball_sha1sum = TARBALL_I386_SHA1SUM
     revision = REVISION_I386
   elif target_arch == 'mips':
     sysroot = os.path.join(linux_dir, SYSROOT_DIR_MIPS)
     tarball_filename = TARBALL_MIPS
     tarball_sha1sum = TARBALL_MIPS_SHA1SUM
     revision = REVISION_MIPS
@@ skipping 30 matching lines @@
   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)