Merge central to inbound

build/mach_bootstrap.py

@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+# 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/.
+
+from __future__ import print_function, unicode_literals
+
+import os
+import platform
+import sys
+
+# TODO Bug 794506 Integrate with the in-tree virtualenv configuration.
+SEARCH_PATHS = [
+    'python/mach',
+    'python/mozboot',
+    'python/mozbuild',
+    'build/pymake',
+    'python/blessings',
+    'python/psutil',
+    'python/which',
+    'other-licenses/ply',
+    'xpcom/idl-parser',
+    'testing',
+    'testing/xpcshell',
+    'testing/mozbase/mozprocess',
+    'testing/mozbase/mozfile',
+    'testing/mozbase/mozinfo',
+]
+
+# Individual files providing mach commands.
+MACH_MODULES = [
+    'addon-sdk/mach_commands.py',
+    'layout/tools/reftest/mach_commands.py',
+    'python/mozboot/mozboot/mach_commands.py',
+    'python/mozbuild/mozbuild/config.py',
+    'python/mozbuild/mozbuild/mach_commands.py',
+    'python/mozbuild/mozbuild/frontend/mach_commands.py',
+    'testing/mochitest/mach_commands.py',
+    'testing/xpcshell/mach_commands.py',
+]
+
+def bootstrap(topsrcdir):
+    # Ensure we are running Python 2.7+. We put this check here so we generate a
+    # user-friendly error message rather than a cryptic stack trace on module
+    # import.
+    if sys.version_info[0] != 2 or sys.version_info[1] < 7:
+        print('Python 2.7 or above (but not Python 3) is required to run mach.')
+        print('You are running Python', platform.python_version())
+        sys.exit(1)
+
+    try:
+        import mach.main
+    except ImportError:
+        sys.path[0:0] = [os.path.join(topsrcdir, path) for path in SEARCH_PATHS]
+        import mach.main
+
+    mach = mach.main.Mach(topsrcdir)
+    for path in MACH_MODULES:
+        mach.load_commands_from_file(os.path.join(topsrcdir, path))
+    return mach