diff options
Diffstat (limited to 'deps/v8/build/toolchain/gcc_link_wrapper.py')
-rwxr-xr-x | deps/v8/build/toolchain/gcc_link_wrapper.py | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/deps/v8/build/toolchain/gcc_link_wrapper.py b/deps/v8/build/toolchain/gcc_link_wrapper.py new file mode 100755 index 0000000000..8892f14bfe --- /dev/null +++ b/deps/v8/build/toolchain/gcc_link_wrapper.py @@ -0,0 +1,74 @@ +#!/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 os +import subprocess +import sys + +import wrapper_utils + + +# When running on a Windows host and using a toolchain whose tools are +# actually wrapper scripts (i.e. .bat files on Windows) rather than binary +# executables, the "command" to run has to be prefixed with this magic. +# The GN toolchain definitions take care of that for when GN/Ninja is +# running the tool directly. When that command is passed in to this +# script, it appears as a unitary string but needs to be split up so that +# just 'cmd' is the actual command given to Python's subprocess module. +BAT_PREFIX = 'cmd /c call ' + +def CommandToRun(command): + if command[0].startswith(BAT_PREFIX): + command = command[0].split(None, 3) + command[1:] + return command + + +def main(): + parser = argparse.ArgumentParser(description=__doc__) + parser.add_argument('--strip', + help='The strip binary to run', + metavar='PATH') + parser.add_argument('--unstripped-file', + help='Executable file produced by linking command', + metavar='FILE') + parser.add_argument('--map-file', + help=('Use --Wl,-Map to generate a map file. Will be ' + 'gzipped if extension ends with .gz'), + 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() + + # Work-around for gold being slow-by-default. http://crbug.com/632230 + fast_env = dict(os.environ) + fast_env['LC_ALL'] = 'C' + result = wrapper_utils.RunLinkWithOptionalMapFile(args.command, env=fast_env, + map_file=args.map_file) + if result != 0: + return result + + # Finally, strip the linked executable (if desired). + if args.strip: + result = subprocess.call(CommandToRun([ + args.strip, '-o', args.output, args.unstripped_file + ])) + + return result + + +if __name__ == "__main__": + sys.exit(main()) |