--- Makefile	2021-01-31 15:52:37.758912000 -0500
+++ Makefile	2021-01-31 17:51:38.628151000 -0500
@@ -14,6 +14,7 @@ 
 		opencl>=0:devel/opencl
 RUN_DEPENDS=	opencl>=0:devel/opencl
 LIB_DEPENDS=	\
+		liblapacke.so:math/lapacke\
 		libIlmImf.so:graphics/openexr \
 		libavcodec.so:multimedia/ffmpeg \
 		libfreetype.so:print/freetype2 \
@@ -22,7 +23,6 @@ 
 		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 \
@@ -57,7 +57,8 @@ 
 		OPENCV_ENABLE_NONFREE
 CMAKE_OFF=	OPENCV_GENERATE_SETUPVARS \
 		BUILD_opencv_python2 \
-		BUILD_TESTS
+		BUILD_TESTS \
+		WITH_IPP
 CMAKE_ARGS=	-DOPENCV_EXTRA_MODULES_PATH="${WRKSRC}/contrib/modules" \
 		-DOPENCV_PYTHON3_INSTALL_PATH=${PYTHON_SITELIBDIR} \
 		-DVULKAN_INCLUDE_DIRS=${LOCALBASE}/include
@@ -65,9 +66,15 @@ 
 DATADIR=	${PREFIX}/share/${PORTNAME}4
 
 OPTIONS_DEFINE=		PYTHON JAVA
-OPTIONS_DEFAULT=	PYTHON
+OPTIONS_DEFAULT=	PYTHON OPENBLAS
 OPTIONS_SUB=		yes
+OPTIONS_SINGLE=		BLAS
+OPTIONS_SINGLE_BLAS=	ATLAS OPENBLAS
 
+ATLAS_DESC=         	ATLAS blas implementation
+OPENBLAS_DESC=		OpenBLAS blas implementation
+
+
 JAVA_CMAKE_BOOL=	BUILD_openv_java
 JAVA_BUILD_DEPENDS=	ant:devel/apache-ant
 
@@ -77,6 +84,10 @@ 
 PYTHON_USE_PYTHON=	noflavors
 PYTHON_CMAKE_BOOL=	BUILD_opencv_python3
 
+ATLAS_LIB_DEPENDS=	libatlas.so:math/atlas
+OPENBLAS_LIB_DEPENDS=	libopenblas.so:math/openblas
+
+
 post-extract:
 	${MV} ${WRKSRC_contrib} ${WRKSRC}/contrib
 	${MKDIR} ${BUILD_WRKSRC}/3rdparty/ade
@@ -84,5 +95,8 @@ 
 	${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
+post-patch:
+	${REINPLACE_CMD} -e 's|/usr/lib/atlas-base|{PREFIX}/lib|g' ${WRKSRC}/cmake/OpenCVFindAtlas.cmake
+	${REINPLACE_CMD} -e 's|/usr/include/atlas|{PREFIX}/include|g' ${WRKSRC}/cmake/OpenCVFindAtlas.cmake
 
 .include <bsd.port.mk>