Index: head/misc/biblesync/Makefile
===================================================================
--- head/misc/biblesync/Makefile	(revision 544791)
+++ head/misc/biblesync/Makefile	(revision 544792)
@@ -1,31 +1,31 @@
 # $FreeBSD$
 
 PORTNAME=	biblesync
 DISTVERSION=	2.1.0
 CATEGORIES=	misc
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Multicast shared co-navigation library for Bible programs
 
 LICENSE=	PD
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 LIB_DEPENDS=	libuuid.so:misc/e2fsprogs-libuuid
 
-USES=		cmake gettext-runtime
+USES=		cmake compiler:c++11-lang gettext-runtime
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	karlkleinpaste
 
 USE_LDCONFIG=	yes
 
 CMAKE_ON=	BUILD_SHARED_LIBS
 
 post-patch:
 	${REINPLACE_CMD} s,/bibleysnc,, ${WRKSRC}/biblesync.pc.in
 
 post-install:
 	${INSTALL_MAN} ${STAGEDIR}${PREFIX}/share/man/man7/biblesync.7 ${STAGEDIR}${MAN7PREFIX}/man/man7
 	${RM} -R ${STAGEDIR}${PREFIX}/share/man
 
 .include <bsd.port.mk>
Index: head/misc/xiphos/Makefile
===================================================================
--- head/misc/xiphos/Makefile	(revision 544791)
+++ head/misc/xiphos/Makefile	(revision 544792)
@@ -1,43 +1,43 @@
 # $FreeBSD$
 
 PORTNAME=	xiphos
 DISTVERSION=	4.2.1
 CATEGORIES=	misc gnome
 # Don't use USE_GITHUB: the sources downloaded by USE_GITHUB cannot be
 # built as they miss the file ${WRKSRC}/cmake/source_version.txt.
 # See also: https://github.com/crosswire/xiphos/issues/1037
 MASTER_SITES=	https://github.com/crosswire/${PORTNAME}/releases/download/${DISTVERSION}/
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Bible interface utilizing the sword framework
 
 LICENSE=	GPLv2+
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 BUILD_DEPENDS=	appstream-util:devel/appstream-glib \
 		desktop-file-validate:devel/desktop-file-utils \
 		itstool:textproc/itstool \
 		yelp-build:textproc/yelp-tools
 LIB_DEPENDS=	libbiblesync.so:misc/biblesync \
 		libdbus-1.so:devel/dbus \
 		libdbus-glib-1.so:devel/dbus-glib \
 		libenchant.so:textproc/enchant \
 		libicui18n.so:devel/icu \
 		libminizip.so:archivers/minizip \
 		libsoup-2.4.so:devel/libsoup \
 		libsword.so:misc/sword \
 		libuuid.so:misc/e2fsprogs-libuuid \
 		libwebkit2gtk-4.0.so:www/webkit2-gtk3
 
 # gettext is always needed, even if NLS is off
-USES=		cmake gettext gnome pkgconfig
+USES=		cmake compiler:c11 gettext gnome pkgconfig
 USE_GNOME=	cairo gconf2 gtk30 gtkhtml4 intltool libgsf
 INSTALLS_ICONS=	yes
 
 CMAKE_OFF=	EPUB
 CMAKE_ON=	GTKHTML
 
 OPTIONS_DEFINE=	NLS
 OPTIONS_SUB=	NLS
 
 .include <bsd.port.mk>