Index: head/devel/libsigrok/Makefile
===================================================================
--- head/devel/libsigrok/Makefile	(revision 487861)
+++ head/devel/libsigrok/Makefile	(revision 487862)
@@ -1,36 +1,36 @@
 # Created by: Uffe Jakobsen <uffe@uffe.org>
 # $FreeBSD$
 
 PORTNAME=	libsigrok
 PORTVERSION=	0.5.1
 CATEGORIES=	devel
 MASTER_SITES=	http://sigrok.org/download/source/libsigrok/
 
 MAINTAINER=	bsam@FreeBSD.org
 COMMENT=	Framework for hardware logic analyzers, core library
 
 LICENSE=	GPLv3+
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 BUILD_DEPENDS=	doxygen:devel/doxygen
 LIB_DEPENDS=	libftdi1.so:devel/libftdi1 \
 		libserialport.so:devel/libserialport \
 		libvisa.so:devel/librevisa \
 		libzip.so:archivers/libzip
 
-USES=		gnome pathfix libtool pkgconfig
+USES=		compiler:c11 gnome pathfix libtool pkgconfig
 
 GNU_CONFIGURE=	yes
 INSTALL_TARGET=	install-strip
 MAKE_JOBS_UNSAFE=	yes
 USE_LDCONFIG=	yes
 USE_GNOME=	glibmm
 INSTALLS_ICONS=	yes
 
 post-patch:
 # libusb can be disabled via src.conf(5), so detect via pkg-config
 	@${REINPLACE_CMD} -e 's/\(libusb-1\.0\) >= 1\.0\.[0-9]*/\1/' \
 		-e '/\*freebsd\*/,/;;/d' \
 		${WRKSRC}/configure
 
 .include <bsd.port.mk>