Index: head/devel/libffi/Makefile
===================================================================
--- head/devel/libffi/Makefile	(revision 541238)
+++ head/devel/libffi/Makefile	(revision 541239)
@@ -1,30 +1,30 @@
 # Created by: Horance Chou <horance@freedom.ie.cycu.edu.tw>
 # $FreeBSD$
 
 PORTNAME=	libffi
 PORTVERSION=	3.3
 CATEGORIES=	devel
 MASTER_SITES=	SOURCEWARE/${PORTNAME}
 
 MAINTAINER=	zeising@FreeBSD.org
 COMMENT=	Foreign Function Interface
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 TEST_DEPENDS=	runtest:misc/dejagnu
 
-USES=		libtool pathfix
+USES=		compiler:c11 libtool pathfix
 USE_LDCONFIG=	yes
 GNU_CONFIGURE=	yes
 
 CONFIGURE_ARGS=	--disable-multi-os-directory
 INSTALL_TARGET=	install-strip
 INFO=		libffi
 TEST_TARGET=	check
 
 post-patch:
 	@${REINPLACE_CMD} -e 's| -Wno-psabi||g' \
 		${WRKSRC}/testsuite/lib/libffi.exp
 
 .include <bsd.port.mk>