diff -up mozilla-aurora-7676a9a06403/config/baseconfig.mk.dir mozilla-aurora-7676a9a06403/config/baseconfig.mk
--- mozilla-aurora-7676a9a06403/config/baseconfig.mk.dir	2012-09-13 14:18:35.000000000 +0200
+++ mozilla-aurora-7676a9a06403/config/baseconfig.mk	2012-09-26 10:13:45.258240426 +0200
@@ -2,7 +2,7 @@ INCLUDED_AUTOCONF_MK = 1
 
 includedir := $(includedir)/$(MOZ_APP_NAME)-$(MOZ_APP_VERSION)
 idldir = $(datadir)/idl/$(MOZ_APP_NAME)-$(MOZ_APP_VERSION)
-installdir = $(libdir)/$(MOZ_APP_NAME)-$(MOZ_APP_VERSION)
+installdir = $(libdir)/$(MOZ_APP_NAME)
 sdkdir = $(libdir)/$(MOZ_APP_NAME)-devel-$(MOZ_APP_VERSION)
 DIST = $(DEPTH)/dist
 
diff -up mozilla-aurora-7676a9a06403/js/src/config/baseconfig.mk.dir mozilla-aurora-7676a9a06403/js/src/config/baseconfig.mk
--- mozilla-aurora-7676a9a06403/js/src/config/baseconfig.mk.dir	2012-09-13 14:18:35.000000000 +0200
+++ mozilla-aurora-7676a9a06403/js/src/config/baseconfig.mk	2012-09-26 10:14:07.353351833 +0200
@@ -1,6 +1,6 @@
 INCLUDED_AUTOCONF_MK = 1
 
-installdir = $(libdir)/$(MOZ_APP_NAME)-$(MOZ_APP_VERSION)
+installdir = $(libdir)/$(MOZ_APP_NAME)
 sdkdir = $(libdir)/$(MOZ_APP_NAME)-devel-$(MOZ_APP_VERSION)
 
 ifneq (,$(filter /%,$(TOP_DIST)))