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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
8import os
9import sys
10
11
12def Main(args):
13  # Exit early if disable_nacl=1.
14  if 'disable_nacl=1' in os.environ.get('GYP_DEFINES', ''):
15    return 0
16  script_dir = os.path.dirname(os.path.abspath(__file__))
17  src_dir = os.path.dirname(script_dir)
18  nacl_dir = os.path.join(src_dir, 'native_client')
19  nacl_build_dir = os.path.join(nacl_dir, 'build')
20  download_script = os.path.join(nacl_build_dir, 'download_toolchains.py')
21  if not os.path.exists(download_script):
22    print "Can't find '%s'" % download_script
23    print 'Presumably you are intentionally building without NativeClient.'
24    print 'Skipping NativeClient toolchain download.'
25    sys.exit(0)
26  sys.path.insert(0, nacl_build_dir)
27  import download_toolchains
28
29  # TODO (robertm): Finish getting PNaCl ready for prime time.
30  # BUG:
31  # We remove this --optional-pnacl argument, and instead replace it with
32  # --no-pnacl for most cases.  However, if the bot name is an sdk
33  # bot then we will go ahead and download it.  This prevents increasing the
34  # gclient sync time for developers, or standard Chrome bots.
35  if '--optional-pnacl' in args:
36    args.remove('--optional-pnacl')
37    use_pnacl = False
38    buildbot_name = os.environ.get('BUILDBOT_BUILDERNAME', '')
39    if 'pnacl' in buildbot_name and 'sdk' in buildbot_name:
40      use_pnacl = True
41    if use_pnacl:
42      print '\n*** DOWNLOADING PNACL TOOLCHAIN ***\n'
43    else:
44      args.append('--no-pnacl')
45
46  # Only download the ARM gcc toolchain if we are building for ARM
47  # TODO(olonho): we need to invent more reliable way to get build
48  # configuration info, to know if we're building for ARM.
49  if 'target_arch=arm' in os.environ.get('GYP_DEFINES', ''):
50      args.append('--arm-untrusted')
51
52  # Append the name of the file to use as a version and hash source.
53  # NOTE:  While not recommended, it is possible to redirect this file to
54  # a chrome location to avoid branching NaCl if just a toolchain needs
55  # to be bumped.
56  args.append(os.path.join(nacl_dir, 'TOOL_REVISIONS'))
57
58  download_toolchains.main(args)
59  return 0
60
61
62if __name__ == '__main__':
63  sys.exit(Main(sys.argv[1:]))
64