diff -r 000000000000 -r 6474c204b198 xpcom/moz.build
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/moz.build	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,47 @@
+# -*- Mode: python; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=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/.
+
+PARALLEL_DIRS += [
+    'idl-parser',
+]
+
+DIRS += [
+    'typelib',
+    'string',
+    'glue',
+    'base',
+    'ds',
+    'io',
+    'components',
+    'threads',
+    'reflect',
+    'system',
+    '../chrome',
+    'build',
+]
+
+if CONFIG['OS_ARCH'] == 'WINNT' and CONFIG['MOZ_DEBUG']:
+    DIRS += ['windbgdlg']
+
+TEST_TOOL_DIRS += [
+    'tests',
+    'sample',
+    'typelib/xpt/tests',
+]
+
+#  Can't build internal xptcall tests that use symbols which are not exported.
+#TEST_TOOL_DIRS += [
+#    'reflect/xptinfo/tests',
+#    'reflect/xptcall/tests,
+#]
+
+if CONFIG['DEHYDRA_PATH']:
+    DIRS += ['analysis']
+
+CONFIGURE_DEFINE_FILES += [
+    'xpcom-config.h',
+    'xpcom-private.h',
+]