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109 lines
4.3 KiB
Bash
Executable File
109 lines
4.3 KiB
Bash
Executable File
#!/bin/sh
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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# The beginning of this script is both valid shell and valid python,
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# such that the script starts with the shell and is reexecuted with
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# the right python.
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'''which' python2.7 > /dev/null && exec python2.7 "$0" "$@" || exec python "$0" "$@"
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'''
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from __future__ import print_function, unicode_literals
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import os
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import sys
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def ancestors(path):
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while path:
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yield path
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(path, child) = os.path.split(path)
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if child == "":
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break
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def load_mach(topsrcdir):
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sys.path[0:0] = [os.path.join(topsrcdir, "build")]
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import mach_bootstrap
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return mach_bootstrap.bootstrap(topsrcdir)
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def main(args):
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# Check whether the current directory is within a mach src or obj dir.
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for dir_path in ancestors(os.getcwd()):
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# If we find a "mozinfo.json" file, we are in the objdir.
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mozinfo_path = os.path.join(dir_path, 'mozinfo.json')
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if os.path.isfile(mozinfo_path):
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import json
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info = json.load(open(mozinfo_path))
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if 'mozconfig' in info and 'MOZCONFIG' not in os.environ:
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# If the MOZCONFIG environment variable is not already set, set it
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# to the value from mozinfo.json. This will tell the build system
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# to look for a config file at the path in $MOZCONFIG rather than
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# its default locations.
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#
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# Note: subprocess requires native strings in os.environ on Windows
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os.environ[b'MOZCONFIG'] = str(info['mozconfig'])
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if 'topsrcdir' in info:
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# Continue searching for mach_bootstrap in the source directory.
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dir_path = info['topsrcdir']
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# If we find the mach bootstrap module, we are in the srcdir.
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mach_path = os.path.join(dir_path, 'build/mach_bootstrap.py')
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if os.path.isfile(mach_path):
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mach = load_mach(dir_path)
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sys.exit(mach.run(args[1:]))
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print('Could not run mach: No mach source directory found.')
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sys.exit(1)
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if __name__ == '__main__':
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if sys.platform == 'win32':
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# This is a complete hack to work around the fact that Windows
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# multiprocessing needs to import the original module (ie: this
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# file), but only works if it has a .py extension.
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#
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# We do this by a sort of two-level function interposing. The first
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# level interposes forking.get_command_line() with our version defined
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# in my_get_command_line(). Our version of get_command_line will
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# replace the command string with the contents of the fork_interpose()
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# function to be used in the subprocess.
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#
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# The subprocess then gets an interposed imp.find_module(), which we
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# hack up to find 'mach' without the .py extension, since we already
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# know where it is (it's us!). If we're not looking for 'mach', then
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# the original find_module will suffice.
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#
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# See also: http://bugs.python.org/issue19946
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# And: https://bugzilla.mozilla.org/show_bug.cgi?id=914563
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import inspect
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from multiprocessing import forking
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global orig_command_line
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def fork_interpose():
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import imp
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import os
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orig_find_module = imp.find_module
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def my_find_module(name, dirs):
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if name == 'mach':
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path = os.path.join(dirs[0], 'mach')
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f = open(path)
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return (f, path, ('', 'r', imp.PY_SOURCE))
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return orig_find_module(name, dirs)
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imp.find_module = my_find_module
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from multiprocessing.forking import main; main()
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def my_get_command_line():
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fork_code, lineno = inspect.getsourcelines(fork_interpose)
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# Remove the first line (for 'def fork_interpose():') and the three
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# levels of indentation (12 spaces).
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fork_string = ''.join(x[12:] for x in fork_code[1:])
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cmdline = orig_command_line()
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cmdline[2] = fork_string
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return cmdline
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orig_command_line = forking.get_command_line
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forking.get_command_line = my_get_command_line
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main(sys.argv)
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