Index: head/net-p2p/libswift/Makefile
===================================================================
--- head/net-p2p/libswift/Makefile	(revision 507629)
+++ head/net-p2p/libswift/Makefile	(revision 507630)
@@ -1,56 +1,55 @@
 # Created by: Dave Cottlehuber <dch@skunkwerks.at>
 # $FreeBSD$
 
 PORTNAME=		libswift
 PORTVERSION=		20190302
 CATEGORIES=		net-p2p
 
 MAINTAINER=		dch@FreeBSD.org
 COMMENT=		IETF Peer-to-Peer Streaming Peer Protocol implementation
 
 LICENSE=		LGPL21
 
-BROKEN_mips=		fails to build: gmake: clang++: Command not found
-BROKEN_mips64=		fails to build: gmake: clang++: Command not found
-BROKEN_powerpc64=	fails to build: gmake: clang++: Command not found
-
 LIB_DEPENDS=		libevent.so:devel/libevent
 
-USES=			gmake ssl
+USES=			compiler:c++11-lang gmake ssl
 
 USE_GITHUB=		yes
 GH_ACCOUNT=		skunkwerks
 GH_TAGNAME=		dc0cbcc
 PORTDOCS=		README.md
 
 SUB_FILES=		${PORTNAME}
 SUB_LIST+=		SWIFT_USER=${SWIFT_USER} \
 				SWIFT_GROUP=${SWIFT_GROUP} \
 				SWIFT_SHAREDIR=${SWIFT_SHAREDIR} \
 				SWIFT_PIDDIR=${SWIFT_PIDDIR}
 
 PLIST_SUB=		SWIFT_USER=${SWIFT_USER} \
 				SWIFT_GROUP=${SWIFT_GROUP} \
 				SWIFT_SHAREDIR=${SWIFT_SHAREDIR} \
 				SWIFT_PIDDIR=${SWIFT_PIDDIR}
 
 SWIFT_USER?=	www
 SWIFT_GROUP?=	www
 
 SWIFT_SHAREDIR=	/var/db/${PORTNAME}/
 SWIFT_PIDDIR=	/var/run/${PORTNAME}/
 
 USE_RC_SUBR=	${PORTNAME}
 
 OPTIONS_DEFINE=	DOCS
 
 .include <bsd.port.pre.mk>
+
+post-patch:
+	${REINPLACE_CMD} -e 's/CXX=clang++/CXX?=clang++/' ${WRKSRC}/Makefile
 
 do-install:
 	${MKDIR} ${STAGEDIR}${DOCSDIR} \
 		${STAGEDIR}${SWIFT_SHAREDIR} \
 		${STAGEDIR}${SWIFT_PIDDIR}
 	${INSTALL_DATA} ${WRKSRC}/README.md ${STAGEDIR}${DOCSDIR}
 	${INSTALL_PROGRAM} ${WRKSRC}/swift ${STAGEDIR}${PREFIX}/bin/${PORTNAME}
 
 .include <bsd.port.post.mk>