diff -r 000000000000 -r 6474c204b198 xpcom/reflect/xptcall/src/md/win32/moz.build
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/reflect/xptcall/src/md/win32/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/.
+
+if CONFIG['TARGET_CPU'] == 'x86_64':
+    if CONFIG['GNU_CXX']:
+        SOURCES += [
+            'xptcinvoke_x86_64.cpp',
+            'xptcstubs_x86_64_gnu.cpp',
+        ]
+        SOURCES += [
+            'xptcinvoke_asm_x86_64_gnu.s'
+        ]
+    else:
+        SOURCES += [
+            'xptcinvoke_x86_64.cpp',
+            'xptcstubs_x86_64.cpp'
+        ]
+        SOURCES += [
+            'xptcinvoke_asm_x86_64.asm',
+            'xptcstubs_asm_x86_64.asm'
+        ]
+else:
+    if CONFIG['GNU_CXX']:
+        SOURCES += [
+            'xptcinvoke_x86_gnu.cpp',
+            'xptcstubs.cpp',
+        ]
+    else:
+        SOURCES += [
+            'xptcinvoke.cpp',
+            'xptcstubs.cpp',
+        ]
+
+FINAL_LIBRARY = 'xpcom_core'
+
+LOCAL_INCLUDES += [
+    '../..',
+    '../../../../xptinfo/src',
+]
+
+if CONFIG['TARGET_CPU'] != 'x86_64':
+    if not CONFIG['GNU_CXX']:
+        # FIXME: bug 413019
+        NO_PGO = True