gecko-dev/mach
Chris Manchester 2d2292267f Bug 1316140 - Allow use of multiprocessing from config.status on windows. r=mshal
This generalizes the monkey-patching of the main module added
in bug 914563 to allow multiprocessing to be used from config.status
(which triggers the same bug as when it's used with `mach` as main).

MozReview-Commit-ID: AdOdpKzmbsp
2016-12-21 16:28:28 -08:00

87 lines
3.1 KiB
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Executable File

#!/bin/sh
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
# The beginning of this script is both valid shell and valid python,
# such that the script starts with the shell and is reexecuted with
# the right python.
'''which' python2.7 > /dev/null && exec python2.7 "$0" "$@" || exec python "$0" "$@"
'''
from __future__ import print_function, unicode_literals
import os
import sys
def ancestors(path):
while path:
yield path
(path, child) = os.path.split(path)
if child == "":
break
def load_mach(dir_path, mach_path):
import imp
with open(mach_path, 'r') as fh:
imp.load_module('mach_bootstrap', fh, mach_path,
('.py', 'r', imp.PY_SOURCE))
import mach_bootstrap
return mach_bootstrap.bootstrap(dir_path)
def check_and_get_mach(dir_path):
bootstrap_paths = (
'build/mach_bootstrap.py',
# test package bootstrap
'tools/mach_bootstrap.py',
)
for bootstrap_path in bootstrap_paths:
mach_path = os.path.join(dir_path, bootstrap_path)
if os.path.isfile(mach_path):
return load_mach(dir_path, mach_path)
return None
def get_mach():
# Check whether the current directory is within a mach src or obj dir.
for dir_path in ancestors(os.getcwd()):
# If we find a "config.status" and "mozinfo.json" file, we are in the objdir.
config_status_path = os.path.join(dir_path, 'config.status')
mozinfo_path = os.path.join(dir_path, 'mozinfo.json')
if os.path.isfile(config_status_path) and os.path.isfile(mozinfo_path):
import json
info = json.load(open(mozinfo_path))
if 'mozconfig' in info and 'MOZCONFIG' not in os.environ:
# If the MOZCONFIG environment variable is not already set, set it
# to the value from mozinfo.json. This will tell the build system
# to look for a config file at the path in $MOZCONFIG rather than
# its default locations.
#
# Note: subprocess requires native strings in os.environ on Windows
os.environ[b'MOZCONFIG'] = str(info['mozconfig'])
if 'topsrcdir' in info:
# Continue searching for mach_bootstrap in the source directory.
dir_path = info['topsrcdir']
mach = check_and_get_mach(dir_path)
if mach:
return mach
# If we didn't find a source path by scanning for a mozinfo.json, check
# whether the directory containing this script is a source directory. We
# follow symlinks so mach can be run even if cwd is outside the srcdir.
return check_and_get_mach(os.path.dirname(os.path.realpath(__file__)))
def main(args):
mach = get_mach()
if not mach:
print('Could not run mach: No mach source directory found.')
sys.exit(1)
sys.exit(mach.run(args))
if __name__ == '__main__':
main(sys.argv[1:])