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      1 #!/usr/bin/env python
      2 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
      3 # Use of this source code is governed by a BSD-style license that can be
      4 # found in the LICENSE file.
      5 
      6 """Shim to run nacl toolchain download script only if there is a nacl dir."""
      7 
      8 import os
      9 import shutil
     10 import sys
     11 
     12 
     13 def Main(args):
     14   # Exit early if disable_nacl=1.
     15   if 'disable_nacl=1' in os.environ.get('GYP_DEFINES', ''):
     16     return 0
     17   if 'OS=android' in os.environ.get('GYP_DEFINES', ''):
     18     return 0
     19   script_dir = os.path.dirname(os.path.abspath(__file__))
     20   src_dir = os.path.dirname(script_dir)
     21   nacl_dir = os.path.join(src_dir, 'native_client')
     22   nacl_build_dir = os.path.join(nacl_dir, 'build')
     23   package_version_dir = os.path.join(nacl_build_dir, 'package_version')
     24   package_version = os.path.join(package_version_dir, 'package_version.py')
     25   if not os.path.exists(package_version):
     26     print "Can't find '%s'" % package_version
     27     print 'Presumably you are intentionally building without NativeClient.'
     28     print 'Skipping NativeClient toolchain download.'
     29     sys.exit(0)
     30   sys.path.insert(0, package_version_dir)
     31   import package_version
     32 
     33   # BUG:
     34   # We remove this --optional-pnacl argument, and instead replace it with
     35   # --no-pnacl for most cases.  However, if the bot name is an sdk
     36   # bot then we will go ahead and download it.  This prevents increasing the
     37   # gclient sync time for developers, or standard Chrome bots.
     38   if '--optional-pnacl' in args:
     39     args.remove('--optional-pnacl')
     40     use_pnacl = False
     41     buildbot_name = os.environ.get('BUILDBOT_BUILDERNAME', '')
     42     if 'pnacl' in buildbot_name and 'sdk' in buildbot_name:
     43       use_pnacl = True
     44     if use_pnacl:
     45       print '\n*** DOWNLOADING PNACL TOOLCHAIN ***\n'
     46     else:
     47       args = ['--exclude', 'pnacl_newlib'] + args
     48 
     49   # Only download the ARM gcc toolchain if we are building for ARM
     50   # TODO(olonho): we need to invent more reliable way to get build
     51   # configuration info, to know if we're building for ARM.
     52   if 'target_arch=arm' not in os.environ.get('GYP_DEFINES', ''):
     53       args = ['--exclude', 'nacl_arm_newlib'] + args
     54 
     55   package_version.main(args)
     56 
     57   return 0
     58 
     59 
     60 if __name__ == '__main__':
     61   sys.exit(Main(sys.argv[1:]))
     62