--- Makefile.orig	2015-09-15 23:04:53.280054281 +0200
+++ Makefile	2015-09-15 23:08:19.079039647 +0200
@@ -32,7 +32,9 @@
 CONFIGURE_ENV=	OGG_PREFIX=${LOCALBASE}
 GNU_CONFIGURE=	yes
 USE_RC_SUBR=	${PORTNAME}
-USES=		gmake
+USES=		cpe	gmake
+CPE_VENDOR=	 xiph
+CPE_PRODUCT= icecast
 WRKSRC=		${WRKDIR}/icecast-${PORTVERSION}
 
 DATADIR=	${PREFIX}/share/icecast