#!/usr/bin/python
# Copyright (c) 2011 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.

"""Shim to run nacl toolchain download script only if there is a nacl dir."""

import os
import sys


def Main():
  script_dir = os.path.dirname(os.path.abspath(__file__))
  src_dir = os.path.dirname(script_dir)
  nacl_dir = os.path.join(src_dir, 'native_client')
  nacl_build_dir = os.path.join(nacl_dir, 'build')
  download_script = os.path.join(nacl_build_dir, 'download_toolchains.py')
  if not os.path.exists(download_script):
    print "Can't find '%s'" % download_script
    print 'Presumably you are intentionally building without NativeClient.'
    print 'Skipping NativeClient toolchain download.'
    sys.exit(0)
  sys.path.insert(0, nacl_build_dir)
  import download_toolchains
  download_toolchains.Main()


if __name__ == '__main__':
  Main()