--- mozilla-build/config/rules.mk.orig	2012-03-06 13:44:49.000000000 -0200
+++ mozilla-build/config/rules.mk	2012-04-05 22:24:29.473430588 -0300
@@ -48,11 +48,11 @@
 endif
 
 ifndef INCLUDED_CONFIG_MK
-include $(topsrcdir)/config/config.mk
+include /build/src/mozilla-build/config/config.mk
 endif
 
 ifndef INCLUDED_VERSION_MK
-include $(topsrcdir)/config/version.mk
+include /build/src/mozilla-build/config/version.mk
 endif
 
 ifdef SDK_XPIDLSRCS