--- Makefile	2015-03-30 11:49:22.570333679 +0200
+++ Makefile	2015-03-30 11:50:11.319285605 +0200
@@ -21,7 +21,9 @@ 
 INSTALL_TARGET=	install-strip
 MAKE_ENV=	XERCESCROOT=${WRKSRC}
 USE_LDCONFIG=	yes
-USES=		gmake libtool pathfix
+USES=		cpe gmake libtool pathfix
+CPE_PRODUCT=	xerces-c%2b%2b
+CPE_VENDOR=	apache
 
 PLIST_SUB=	MAJOR_VER=${PORTVERSION:R}