Index: head/graphics/opencv/Makefile
===================================================================
--- head/graphics/opencv/Makefile	(revision 564939)
+++ head/graphics/opencv/Makefile	(revision 564940)
@@ -1,88 +1,93 @@
 # $FreeBSD$
 
 PORTNAME=	opencv
 DISTVERSION=	4.5.1
 CATEGORIES=	graphics
 
 MAINTAINER=	tcberner@FreeBSD.org
 COMMENT=	Open Source Computer Vision library
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	vulkan-headers>0:graphics/vulkan-headers \
 		opencl>=0:devel/opencl
 RUN_DEPENDS=	opencl>=0:devel/opencl
 LIB_DEPENDS=	\
 		libIlmImf.so:graphics/openexr \
 		libavcodec.so:multimedia/ffmpeg \
 		libfreetype.so:print/freetype2 \
 		libgflags.so:devel/gflags \
 		libglog.so:devel/glog \
 		libgphoto2.so:graphics/libgphoto2 \
 		libharfbuzz.so:print/harfbuzz \
 		libhdf5.so:science/hdf5 \
 		libopenblas.so:math/openblas \
 		libpng16.so:graphics/png \
 		libtbb.so:devel/tbb \
 		libtiff.so:graphics/tiff \
 		libwebp.so:graphics/webp \
 
 USES=		cmake compiler:c++14-lang eigen:3 jpeg localbase:ldflags pkgconfig python:3.6+,build
 USE_GITHUB=	yes
 GH_PROJECT=	opencv_contrib:contrib \
 		ade:ade \
 		opencv_3rdparty:extra_mod_3rdparty_boost_descr \
 		opencv_3rdparty:extra_mod_3rdparty_vgg_descr
 GH_TAGNAME=	v0.1.1f:ade \
 		34e4206aef44d50e6bbcd0ab06354b52e7466d26:extra_mod_3rdparty_boost_descr \
 		fccf7cd6a4b12079f73bbfb21745f9babcd4eb1d:extra_mod_3rdparty_vgg_descr
 
 CMAKE_ON=	\
 		WITH_EIGEN  \
 		WITH_GDAL \
 		WITH_GDCM \
 		WITH_GPHOTO2 \
 		WITH_JASPER \
 		WITH_JPEG \
 		WITH_OPENCL \
 		WITH_OPENEXR \
 		WITH_OPENGL \
 		WITH_PNG \
 		WITH_TBB \
 		WITH_TIFF \
 		WITH_VULKAN \
 		WITH_WEBP \
 		OPENCV_GENERATE_PKGCONFIG \
 		OPENCV_ENABLE_NONFREE
 CMAKE_OFF=	OPENCV_GENERATE_SETUPVARS \
 		BUILD_opencv_python2 \
 		BUILD_TESTS
 CMAKE_ARGS=	-DOPENCV_EXTRA_MODULES_PATH="${WRKSRC}/contrib/modules" \
 		-DOPENCV_PYTHON3_INSTALL_PATH=${PYTHON_SITELIBDIR} \
 		-DVULKAN_INCLUDE_DIRS=${LOCALBASE}/include
 
 DATADIR=	${PREFIX}/share/${PORTNAME}4
 
-OPTIONS_DEFINE=		PYTHON JAVA
+OPTIONS_DEFINE=		HARDENING PYTHON JAVA LTO
 OPTIONS_DEFAULT=	PYTHON
 OPTIONS_SUB=		yes
 
+HARDENING_CMAKE_BOOL=	ENABLE_BUILD_HARDENING
+HARDENING_DESC=		Enable hardening of the resulting binaries
+
 JAVA_CMAKE_BOOL=	BUILD_openv_java
 JAVA_BUILD_DEPENDS=	ant:devel/apache-ant
 
 PYTHON_BUILD_DEPENDS=	${PYNUMPY}
 PYTHON_RUN_DEPENDS=	${PYNUMPY}
 PYTHON_USES=		python:3.6+
 PYTHON_USE_PYTHON=	noflavors
 PYTHON_CMAKE_BOOL=	BUILD_opencv_python3
+
+LTO_CMAKE_BOOL=		ENABLE_THIN_LTO
 
 post-extract:
 	${MV} ${WRKSRC_contrib} ${WRKSRC}/contrib
 	${MKDIR} ${BUILD_WRKSRC}/3rdparty/ade
 	${MV} ${WRKSRC_ade} ${BUILD_WRKSRC}/3rdparty/ade
 	${MKDIR} ${WRKSRC}/contrib/modules/xfeatures2d/src
 	${MV} ${WRKSRC_extra_mod_3rdparty_boost_descr}/* ${WRKSRC}/contrib/modules/xfeatures2d/src
 	${MV} ${WRKSRC_extra_mod_3rdparty_vgg_descr}/* ${WRKSRC}/contrib/modules/xfeatures2d/src
 
 .include <bsd.port.mk>