The Tor Browser / file revision

 # 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/.

 import imp

 import os

 import sys

 path = os.path.dirname(__file__)

 while not os.path.exists(os.path.join(path, 'config.status')):

     parent = os.path.normpath(os.path.join(path, os.pardir))

     if parent == path:

         raise Exception("Can't find config.status")

     path = parent

 path = os.path.join(path, 'config.status')

 config = imp.load_module('_buildconfig', open(path), path, ('', 'r', imp.PY_SOURCE))

 # Copy values from the config.status namespace into this module namespace.

 # This effectively imports topsrcdir, topobjdir, defines, substs, files,

 # headers and non_global_defines

 for var in config.__all__:

     value = getattr(config, var)

     if isinstance(value, list) and value and isinstance(value[0], tuple):

         value = dict(value)

     setattr(sys.modules[__name__], var, value)

 for var in os.environ:

     if var != 'SHELL' and var in substs:

         substs[var] = os.environ[var]