--- Makefile.orig	2015-02-16 21:07:03.091089970 +0100
+++ Makefile	2015-02-16 21:07:40.935088942 +0100
@@ -20,10 +20,11 @@
 CONFIGURE_ARGS+=	--disable-build-docs --without-doxygen --enable-xinput
 
 XORG_CAT=	lib
-USES=		gmake python:2,build
+USES=		cpe gmake python:2,build
 USE_GNOME=	libxslt:build
 USE_XORG=	xau xdmcp
 INSTALL_TARGET=	install-strip
+CPE_VENDOR=	x
 
 OPTIONS_DEFINE=	DOCS