#!/usr/bin/env python
# Copyright 2015 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.

"""Runs a linking command and optionally a strip command.

This script exists to avoid using complex shell commands in
gcc_toolchain.gni's tool("link"), in case the host running the compiler
does not have a POSIX-like shell (e.g. Windows).
"""

import argparse
import subprocess
import sys


def main():
  parser = argparse.ArgumentParser(description=__doc__)
  parser.add_argument('--strip',
                      help='The strip binary to run',
                      metavar='PATH')
  parser.add_argument('--unstripped-file',
                      required=True,
                      help='Executable file produced by linking command',
                      metavar='FILE')
  parser.add_argument('--output',
                      required=True,
                      help='Final output executable file',
                      metavar='FILE')
  parser.add_argument('command', nargs='+',
                      help='Linking command')
  args = parser.parse_args()

  # First, run the actual link.
  result = subprocess.call(args.command)
  if result != 0:
    return result

  # Finally, strip the linked executable (if desired).
  if args.strip:
    result = subprocess.call([args.strip, '--strip-unneeded',
                              '-o', args.output, args.unstripped_file])

  return result


if __name__ == "__main__":
  sys.exit(main())