diff --git a/build/autoconf/config.status.m4 b/build/autoconf/config.status.m4
index 567ac52d790e..e6d68c53adb7 100644
--- a/build/autoconf/config.status.m4
+++ b/build/autoconf/config.status.m4
@@ -153,10 +153,7 @@ __all__ = ['topobjdir', 'topsrcdir', 'defines', 'non_global_defines', 'substs']
 dnl Do the actual work
 if __name__ == '__main__':
     args = dict([(name, globals()[name]) for name in __all__])
-    import sys
-dnl Don't rely on virtualenv here. Standalone js doesn't use it.
-    sys.path.append(os.path.join(topsrcdir, ${extra_python_path}'build'))
-    from ConfigStatus import config_status
+    from mozbuild.config_status import config_status
     config_status(**args)
 EOF
 changequote([, ])
diff --git a/js/src/build/ConfigStatus.py b/js/src/build/ConfigStatus.py
deleted file mode 100644
index b73859798619..000000000000
--- a/js/src/build/ConfigStatus.py
+++ /dev/null
@@ -1,106 +0,0 @@
-# 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/.
-
-# Combined with build/autoconf/config.status.m4, ConfigStatus is an almost
-# drop-in replacement for autoconf 2.13's config.status, with features
-# borrowed from autoconf > 2.5, and additional features.
-
-from __future__ import print_function
-
-import logging
-import os
-import sys
-
-from optparse import OptionParser
-
-from mach.logging import LoggingManager
-from mozbuild.backend.configenvironment import ConfigEnvironment
-from mozbuild.backend.recursivemake import RecursiveMakeBackend
-from mozbuild.frontend.emitter import TreeMetadataEmitter
-from mozbuild.frontend.reader import BuildReader
-from mozbuild.mozinfo import write_mozinfo
-
-
-log_manager = LoggingManager()
-
-
-def config_status(topobjdir='.', topsrcdir='.',
-        defines=[], non_global_defines=[], substs=[]):
-    '''Main function, providing config.status functionality.
-
-    Contrary to config.status, it doesn't use CONFIG_FILES or CONFIG_HEADERS
-    variables.
-
-    Without the -n option, this program acts as config.status and considers
-    the current directory as the top object directory, even when config.status
-    is in a different directory. It will, however, treat the directory
-    containing config.status as the top object directory with the -n option.
-
-    The --recheck option, like with the original config.status, runs configure
-    again, with the options given in the "ac_configure_args" subst.
-
-    The options to this function are passed when creating the
-    ConfigEnvironment. These lists, as well as the actual wrapper script
-    around this function, are meant to be generated by configure.
-    See build/autoconf/config.status.m4.
-    '''
-
-    if 'CONFIG_FILES' in os.environ:
-        raise Exception('Using the CONFIG_FILES environment variable is not '
-            'supported.')
-    if 'CONFIG_HEADERS' in os.environ:
-        raise Exception('Using the CONFIG_HEADERS environment variable is not '
-            'supported.')
-
-    if not os.path.isabs(topsrcdir):
-        raise Exception('topsrcdir must be defined as an absolute directory: '
-            '%s' % topsrcdir)
-
-    parser = OptionParser()
-    parser.add_option('--recheck', dest='recheck', action='store_true',
-                      help='update config.status by reconfiguring in the same conditions')
-    parser.add_option('-v', '--verbose', dest='verbose', action='store_true',
-                      help='display verbose output')
-    parser.add_option('-n', dest='not_topobjdir', action='store_true',
-                      help='do not consider current directory as top object directory')
-    parser.add_option('-d', '--diff', action='store_true',
-                      help='print diffs of changed files.')
-    options, args = parser.parse_args()
-
-    # Without -n, the current directory is meant to be the top object directory
-    if not options.not_topobjdir:
-        topobjdir = os.path.abspath('.')
-
-    env = ConfigEnvironment(topsrcdir, topobjdir, defines=defines,
-            non_global_defines=non_global_defines, substs=substs)
-
-    # mozinfo.json only needs written if configure changes and configure always
-    # passes this environment variable.
-    if 'WRITE_MOZINFO' in os.environ:
-        write_mozinfo(os.path.join(topobjdir, 'mozinfo.json'), env, os.environ)
-
-    reader = BuildReader(env)
-    emitter = TreeMetadataEmitter(env)
-    backend = RecursiveMakeBackend(env)
-    # This won't actually do anything because of the magic of generators.
-    definitions = emitter.emit(reader.read_topsrcdir())
-
-    if options.recheck:
-        # Execute configure from the top object directory
-        os.chdir(topobjdir)
-        os.execlp('sh', 'sh', '-c', ' '.join([os.path.join(topsrcdir, 'configure'), env.substs['ac_configure_args'], '--no-create', '--no-recursion']))
-
-    log_level = logging.DEBUG if options.verbose else logging.INFO
-    log_manager.add_terminal_logging(level=log_level)
-    log_manager.enable_unstructured()
-
-    print('Reticulating splines...', file=sys.stderr)
-    summary = backend.consume(definitions)
-
-    for line in summary.summaries():
-        print(line, file=sys.stderr)
-
-    if options.diff:
-        for path, diff in sorted(summary.file_diffs.items()):
-            print(diff)
diff --git a/build/ConfigStatus.py b/python/mozbuild/mozbuild/config_status.py
similarity index 100%
rename from build/ConfigStatus.py
rename to python/mozbuild/mozbuild/config_status.py