Index: head/astro/siril/Makefile
===================================================================
--- head/astro/siril/Makefile	(revision 504410)
+++ head/astro/siril/Makefile	(revision 504411)
@@ -1,51 +1,52 @@
 # $FreeBSD$
 
 PORTNAME=	siril
 DISTVERSION=	0.9.10
 PORTREVISION=	2
 CATEGORIES=	astro graphics
 MASTER_SITES=	https://free-astro.org/download/
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Astronomical image processing software
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/LICENSE.md
 
 BROKEN_i386=	undefined reference to `__atomic_load' and `__atomic_compare_exchange'
 
 LIB_DEPENDS=	libavformat.so:multimedia/ffmpeg \
 		libcfitsio.so:astro/cfitsio \
 		libconfig.so:devel/libconfig \
 		libcurl.so:ftp/curl \
 		libffms2.so:multimedia/ffms2 \
 		libfftw3.so:math/fftw3 \
 		libgsl.so:math/gsl \
 		liblcms2.so:graphics/lcms2 \
 		libopencv_core.so:graphics/opencv-core \
 		libpng.so:graphics/png \
 		libraw.so:graphics/libraw \
 		libtiff.so:graphics/tiff
 LIB_DEPENDS+=	libopencv_photo.so:graphics/opencv # for some reason, configure fails without opencv, but executable only links to opencv-core
 
-USES=		autoreconf desktop-file-utils gettext gmake gnome localbase pkgconfig jpeg shared-mime-info tar:bz2
+USES=		autoreconf compiler:c++11-lang desktop-file-utils gettext \
+		gmake gnome localbase pkgconfig jpeg shared-mime-info tar:bz2
 GNU_CONFIGURE=	yes
 USE_GNOME=	atk cairo gdkpixbuf2 gtk30 intltool pango
 INSTALLS_ICONS=	yes
 
 WRKSRC=		${WRKDIR}/${PORTNAME}
 
 OPTIONS_DEFINE=			OPENMP
 OPTIONS_DEFAULT=		OPENMP
 
 OPENMP_CONFIGURE_ENABLE=	openmp
 OPENMP_LIB_DEPENDS=		libomp.so:devel/openmp
 
 post-install:
 	@${MKDIR} ${STAGEDIR}${PREFIX}/share/appdata ${STAGEDIR}${PREFIX}/share/mime/packages
 	${INSTALL_DATA} ${WRKSRC}/platform-specific/linux/org.free-astro.siril.desktop ${STAGEDIR}${PREFIX}/share/applications/${PORTNAME}.desktop
 	${INSTALL_DATA} ${WRKSRC}/platform-specific/linux/org.free-astro.siril.appdata.xml ${STAGEDIR}${PREFIX}/share/appdata/${PORTNAME}.appdata.xml
 	${INSTALL_DATA} ${WRKSRC}/platform-specific/linux/siril.xml ${STAGEDIR}${PREFIX}/share/mime/packages/
 	cd ${WRKSRC}/pixmaps && ${COPYTREE_SHARE} icons ${STAGEDIR}${PREFIX}/share/
 
 .include <bsd.port.mk>