Correct install sysroot script logs/comments

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.
+"""Install Debian 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
-# is more often run as part of gclient hooks. When run from hooks this script
-# in a no-op on non-linux platforms.
+# the oldest supported linux distribution. For ARM64 linux, we have Debian
+# Jessie sysroot as Jessie is the first version with ARM64 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 or Debian Wheezy but for consistency we currently use a pre-built root
-# image. The image will normally need to be rebuilt every time chrome's build
-# dependencies are changed.
+# state or Debian Wheezy/Jessie but for consistency we currently use a
+# pre-built root image. The image will normally need to be rebuilt every time
+# chrome's build dependencies are changed.
 
 import hashlib
 import platform
 import optparse
 import os
 import re
 import shutil
 import subprocess
 import sys
 
@@ skipping 129 matching lines @@
     InstallSysroot(options.arch)
 
   return 0
 
 
 def InstallSysroot(target_arch):
   # The sysroot directory should match the one specified in build/common.gypi.
   # TODO(thestig) Consider putting this else where to avoid having to recreate
   # it on every build.
   linux_dir = os.path.dirname(SCRIPT_DIR)
+  debian_release = 'Wheezy'
   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':
+    debian_release = 'Jessie'
     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
   else:
     raise Error('Unknown architecture: %s' % target_arch)
 
   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:
-        print 'Debian Wheezy %s root image already up to date: %s' % \
-            (target_arch, sysroot)
+        print 'Debian %s %s root image already up to date: %s' % \
+            (debian_release, target_arch, sysroot)
         return
 
-  print 'Installing Debian Wheezy %s root image: %s' % (target_arch, sysroot)
+  print 'Installing Debian %s %s root image: %s' % \
+      (debian_release, 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()
   subprocess.check_call(
       ['curl', '--fail', '--retry', '3', '-L', url, '-o', tarball])
   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)