media-libs/opencv: support OpenEXR 3 / imath

We drop multilib for OpenEXR bits for now. Not clear that anything
actually needs this and we don't have multilib support in imath
right now (nor did it succeed when I tried to add it there).

Bug: https://bugs.gentoo.org/833158
Bug: https://bugs.gentoo.org/830124
Signed-off-by: Sam James <sam@gentoo.org>

1 files changed, 578 insertions, 0 deletions

diff --git a/media-libs/opencv/opencv-4.5.5-r1.ebuild b/media-libs/opencv/opencv-4.5.5-r1.ebuild
new file mode 100644
index 000000000000..fda543f7a76a
--- /dev/null
+++ b/media-libs/opencv/opencv-4.5.5-r1.ebuild
@@ -0,0 +1,578 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python3_{8..10} )
+CMAKE_ECLASS=cmake
+inherit java-pkg-opt-2 java-ant-2 cmake-multilib python-r1 toolchain-funcs
+
+DESCRIPTION="A collection of algorithms and sample code for various computer vision problems"
+HOMEPAGE="https://opencv.org"
+TINY_DNN_PV="1.0.0a3"
+SRC_URI="https://github.com/${PN}/${PN}/archive/${PV}.tar.gz -> ${P}.tar.gz
+	dnnsamples? ( https://dev.gentoo.org/~amynka/snap/${PN}-3.4.0-res10_300x300-caffeemodel.tar.gz )
+	download? ( https://github.com/rossbridger/opencv-extdep/archive/4.4.0.tar.gz -> ${PN}-4.4.0_extdep.tar.gz )
+	contrib? (
+		https://github.com/${PN}/${PN}_contrib/archive/${PV}.tar.gz -> ${P}_contrib.tar.gz
+		contribdnn? ( https://dev.gentoo.org/~amynka/snap/${PN}-3.4.0-face_landmark_model.tar.gz )
+		contribxfeatures2d? ( https://dev.gentoo.org/~amynka/snap/vgg_boostdesc-3.2.0.tar.gz )
+	)"
+
+LICENSE="Apache-2.0"
+SLOT="0/${PV}" # subslot = libopencv* soname version
+KEYWORDS="~amd64 ~arm ~arm64 ~ppc ~ppc64 ~riscv ~x86"
+IUSE="contrib contribcvv contribdnn contribfreetype contribhdf contribovis contribsfm contribxfeatures2d cuda debug dnnsamples download +eigen examples +features2d ffmpeg gdal gflags glog gphoto2 gstreamer gtk3 ieee1394 jpeg jpeg2k lapack lto opencl openexr opengl openmp opencvapps png +python qt5 tesseract testprograms threads tiff vaapi v4l vtk webp xine"
+
+# The following lines are shamelessly stolen from ffmpeg-9999.ebuild with modifications
+ARM_CPU_FEATURES=(
+	cpu_flags_arm_neon:NEON
+	cpu_flags_arm_vfpv3:VFPV3
+)
+PPC_CPU_FEATURES=(
+	cpu_flags_ppc_vsx:VSX
+	cpu_flags_ppc_vsx3:VSX3
+)
+X86_CPU_FEATURES_RAW=(
+	avx:AVX
+	avx2:AVX2
+	avx512f:AVX_512F
+	f16c:FP16
+	fma3:FMA3
+	popcnt:POPCNT
+	sse:SSE
+	sse2:SSE2
+	sse3:SSE3
+	ssse3:SSSE3
+	sse4_1:SSE4_1
+	sse4_2:SSE4_2
+)
+X86_CPU_FEATURES=( ${X86_CPU_FEATURES_RAW[@]/#/cpu_flags_x86_} )
+CPU_FEATURES_MAP=(
+	${ARM_CPU_FEATURES[@]}
+	${PPC_CPU_FEATURES[@]}
+	${X86_CPU_FEATURES[@]}
+)
+IUSE="${IUSE} ${CPU_FEATURES_MAP[@]%:*}"
+
+# OpenGL needs gtk or Qt installed to activate, otherwise build system
+# will silently disable it Wwithout the user knowing, which defeats the
+# purpose of the opengl use flag.
+# cuda needs contrib, bug #701712
+REQUIRED_USE="
+	cpu_flags_x86_avx2? ( cpu_flags_x86_f16c )
+	cpu_flags_x86_f16c? ( cpu_flags_x86_avx )
+	cuda? ( contrib
+		tesseract? ( opencl ) )
+	dnnsamples? ( examples )
+	gflags? ( contrib )
+	glog? ( contrib )
+	contribcvv? ( contrib qt5 )
+	contribdnn? ( contrib )
+	contribfreetype? ( contrib )
+	contribhdf? ( contrib )
+	contribovis? ( contrib )
+	contribsfm? ( contrib eigen gflags glog )
+	contribxfeatures2d? ( contrib download )
+	examples? ( contribdnn )
+	java? ( python )
+	opengl? ( qt5 )
+	python? ( ${PYTHON_REQUIRED_USE} )
+	tesseract? ( contrib )
+	?? ( gtk3 qt5 )"
+
+# The following logic is intrinsic in the build system, but we do not enforce
+# it on the useflags since this just blocks emerging pointlessly:
+#	openmp? ( !threads )
+
+RDEPEND="
+	app-arch/bzip2[${MULTILIB_USEDEP}]
+	dev-libs/protobuf:=[${MULTILIB_USEDEP}]
+	sys-libs/zlib[${MULTILIB_USEDEP}]
+	cuda? ( dev-util/nvidia-cuda-toolkit:0= )
+	contribhdf? ( sci-libs/hdf5:= )
+	contribfreetype? (
+		media-libs/freetype:2[${MULTILIB_USEDEP}]
+		media-libs/harfbuzz:=[${MULTILIB_USEDEP}]
+	)
+	contribovis? ( dev-games/ogre:0/1.12 )
+	ffmpeg? ( media-video/ffmpeg:0=[${MULTILIB_USEDEP}] )
+	gdal? ( sci-libs/gdal:= )
+	gflags? ( dev-cpp/gflags[${MULTILIB_USEDEP}] )
+	glog? ( dev-cpp/glog[${MULTILIB_USEDEP}] )
+	gphoto2? ( media-libs/libgphoto2:=[${MULTILIB_USEDEP}] )
+	gstreamer? (
+		media-libs/gstreamer:1.0[${MULTILIB_USEDEP}]
+		media-libs/gst-plugins-base:1.0[${MULTILIB_USEDEP}]
+	)
+	gtk3? (
+		dev-libs/glib:2[${MULTILIB_USEDEP}]
+		x11-libs/gtk+:3[${MULTILIB_USEDEP}]
+	)
+	ieee1394? (
+		media-libs/libdc1394:=[${MULTILIB_USEDEP}]
+		sys-libs/libraw1394[${MULTILIB_USEDEP}]
+	)
+	java? ( >=virtual/jre-1.8:* )
+	jpeg? ( virtual/jpeg:0[${MULTILIB_USEDEP}] )
+	jpeg2k? ( media-libs/openjpeg:2=[${MULTILIB_USEDEP}] )
+	lapack? (
+		virtual/cblas
+		>=virtual/lapack-3.10
+	)
+	opencl? ( virtual/opencl[${MULTILIB_USEDEP}] )
+	openexr? (
+		dev-libs/imath:=
+		media-libs/openexr:=
+	)
+	opengl? (
+		virtual/opengl[${MULTILIB_USEDEP}]
+		virtual/glu[${MULTILIB_USEDEP}]
+	)
+	png? ( media-libs/libpng:0=[${MULTILIB_USEDEP}] )
+	python? (
+		${PYTHON_DEPS}
+		dev-python/numpy[${PYTHON_USEDEP}]
+	)
+	qt5? (
+		dev-qt/qtgui:5=
+		dev-qt/qtwidgets:5=
+		dev-qt/qttest:5=
+		dev-qt/qtconcurrent:5=
+		opengl? ( dev-qt/qtopengl:5= )
+	)
+	tesseract? ( app-text/tesseract[opencl=,${MULTILIB_USEDEP}] )
+	threads? ( dev-cpp/tbb:=[${MULTILIB_USEDEP}] )
+	tiff? ( media-libs/tiff:0[${MULTILIB_USEDEP}] )
+	v4l? ( >=media-libs/libv4l-0.8.3[${MULTILIB_USEDEP}] )
+	vaapi? ( x11-libs/libva[${MULTILIB_USEDEP}] )
+	vtk? ( sci-libs/vtk[rendering] )
+	webp? ( media-libs/libwebp:=[${MULTILIB_USEDEP}] )
+	xine? ( media-libs/xine-lib )"
+DEPEND="${RDEPEND}
+	eigen? ( >=dev-cpp/eigen-3.3.8-r1:3 )
+	java? ( >=virtual/jdk-1.8:* )"
+BDEPEND="virtual/pkgconfig"
+
+MULTILIB_WRAPPED_HEADERS=(
+	# [opencv4]
+	/usr/include/opencv4/opencv2/cvconfig.h
+	/usr/include/opencv4/opencv2/opencv_modules.hpp
+	# [cudev]
+	/usr/include/opencv4/opencv2/cudaarithm.hpp
+	/usr/include/opencv4/opencv2/cudabgsegm.hpp
+	/usr/include/opencv4/opencv2/cudacodec.hpp
+	/usr/include/opencv4/opencv2/cudafeatures2d.hpp
+	/usr/include/opencv4/opencv2/cudafilters.hpp
+	/usr/include/opencv4/opencv2/cudaimgproc.hpp
+	/usr/include/opencv4/opencv2/cudalegacy.hpp
+	/usr/include/opencv4/opencv2/cudalegacy/NCVBroxOpticalFlow.hpp
+	/usr/include/opencv4/opencv2/cudalegacy/NCVHaarObjectDetection.hpp
+	/usr/include/opencv4/opencv2/cudalegacy/NCV.hpp
+	/usr/include/opencv4/opencv2/cudalegacy/NCVPyramid.hpp
+	/usr/include/opencv4/opencv2/cudalegacy/NPP_staging.hpp
+	/usr/include/opencv4/opencv2/cudaobjdetect.hpp
+	/usr/include/opencv4/opencv2/cudaoptflow.hpp
+	/usr/include/opencv4/opencv2/cudastereo.hpp
+	/usr/include/opencv4/opencv2/cudawarping.hpp
+	/usr/include/opencv4/opencv2/cudev/block/block.hpp
+	/usr/include/opencv4/opencv2/cudev/block/detail/reduce.hpp
+	/usr/include/opencv4/opencv2/cudev/block/detail/reduce_key_val.hpp
+	/usr/include/opencv4/opencv2/cudev/block/dynamic_smem.hpp
+	/usr/include/opencv4/opencv2/cudev/block/reduce.hpp
+	/usr/include/opencv4/opencv2/cudev/block/scan.hpp
+	/usr/include/opencv4/opencv2/cudev/block/vec_distance.hpp
+	/usr/include/opencv4/opencv2/cudev/common.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/binary_func.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/binary_op.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/color.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/deriv.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/expr.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/per_element_func.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/reduction.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/unary_func.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/unary_op.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/warping.hpp
+	/usr/include/opencv4/opencv2/cudev/functional/color_cvt.hpp
+	/usr/include/opencv4/opencv2/cudev/functional/detail/color_cvt.hpp
+	/usr/include/opencv4/opencv2/cudev/functional/functional.hpp
+	/usr/include/opencv4/opencv2/cudev/functional/tuple_adapter.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/copy.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/copy.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/histogram.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/integral.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/minmaxloc.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/pyr_down.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/pyr_up.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/reduce.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/reduce_to_column.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/reduce_to_row.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/split_merge.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/transform.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/transpose.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/histogram.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/integral.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/pyramids.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/reduce.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/reduce_to_vec.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/split_merge.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/transform.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/transpose.hpp
+	/usr/include/opencv4/opencv2/cudev.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/constant.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/deriv.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/detail/gpumat.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/extrapolation.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/glob.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/gpumat.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/interpolation.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/lut.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/mask.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/remap.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/resize.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/texture.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/traits.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/transform.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/warping.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/zip.hpp
+	/usr/include/opencv4/opencv2/cudev/util/atomic.hpp
+	/usr/include/opencv4/opencv2/cudev/util/detail/tuple.hpp
+	/usr/include/opencv4/opencv2/cudev/util/detail/type_traits.hpp
+	/usr/include/opencv4/opencv2/cudev/util/limits.hpp
+	/usr/include/opencv4/opencv2/cudev/util/saturate_cast.hpp
+	/usr/include/opencv4/opencv2/cudev/util/simd_functions.hpp
+	/usr/include/opencv4/opencv2/cudev/util/tuple.hpp
+	/usr/include/opencv4/opencv2/cudev/util/type_traits.hpp
+	/usr/include/opencv4/opencv2/cudev/util/vec_math.hpp
+	/usr/include/opencv4/opencv2/cudev/util/vec_traits.hpp
+	/usr/include/opencv4/opencv2/cudev/warp/detail/reduce.hpp
+	/usr/include/opencv4/opencv2/cudev/warp/detail/reduce_key_val.hpp
+	/usr/include/opencv4/opencv2/cudev/warp/reduce.hpp
+	/usr/include/opencv4/opencv2/cudev/warp/scan.hpp
+	/usr/include/opencv4/opencv2/cudev/warp/shuffle.hpp
+	/usr/include/opencv4/opencv2/cudev/warp/warp.hpp
+	# [contrib_cvv]
+	/usr/include/opencv4/opencv2/cvv/call_meta_data.hpp
+	/usr/include/opencv4/opencv2/cvv/cvv.hpp
+	/usr/include/opencv4/opencv2/cvv/debug_mode.hpp
+	/usr/include/opencv4/opencv2/cvv/dmatch.hpp
+	/usr/include/opencv4/opencv2/cvv/filter.hpp
+	/usr/include/opencv4/opencv2/cvv/final_show.hpp
+	/usr/include/opencv4/opencv2/cvv.hpp
+	/usr/include/opencv4/opencv2/cvv/show_image.hpp
+	# [contrib_hdf]
+	/usr/include/opencv4/opencv2/hdf/hdf5.hpp
+	/usr/include/opencv4/opencv2/hdf.hpp
+	# [contrib_ovis]
+	/usr/include/opencv4/opencv2/ovis.hpp
+	# [contrib_sfm]
+	/usr/include/opencv4/opencv2/sfm.hpp
+	/usr/include/opencv4/opencv2/sfm/conditioning.hpp
+	/usr/include/opencv4/opencv2/sfm/fundamental.hpp
+	/usr/include/opencv4/opencv2/sfm/io.hpp
+	/usr/include/opencv4/opencv2/sfm/numeric.hpp
+	/usr/include/opencv4/opencv2/sfm/projection.hpp
+	/usr/include/opencv4/opencv2/sfm/reconstruct.hpp
+	/usr/include/opencv4/opencv2/sfm/robust.hpp
+	/usr/include/opencv4/opencv2/sfm/simple_pipeline.hpp
+	/usr/include/opencv4/opencv2/sfm/triangulation.hpp
+	# [vtk]
+	/usr/include/opencv4/opencv2/viz.hpp
+	/usr/include/opencv4/opencv2/viz/types.hpp
+	/usr/include/opencv4/opencv2/viz/viz3d.hpp
+	/usr/include/opencv4/opencv2/viz/vizcore.hpp
+	/usr/include/opencv4/opencv2/viz/widget_accessor.hpp
+	/usr/include/opencv4/opencv2/viz/widgets.hpp
+)
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-3.4.0-disable-download.patch
+	"${FILESDIR}"/${PN}-3.4.1-cuda-add-relaxed-constexpr.patch
+	"${FILESDIR}"/${PN}-4.1.2-opencl-license.patch
+	"${FILESDIR}"/${PN}-4.4.0-disable-native-cpuflag-detect.patch
+	"${FILESDIR}"/${PN}-4.5.0-link-with-cblas-for-lapack.patch
+)
+
+pkg_pretend() {
+	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
+}
+
+pkg_setup() {
+	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
+	java-pkg-opt-2_pkg_setup
+}
+
+src_prepare() {
+	cmake_src_prepare
+
+	# remove bundled stuff
+	rm -r 3rdparty || die "Removing 3rd party components failed"
+	sed -e '/add_subdirectory(.*3rdparty.*)/ d' \
+		-i CMakeLists.txt cmake/*cmake || die
+
+	if use dnnsamples; then
+		mv  "${WORKDIR}/res10_300x300_ssd_iter_140000.caffemodel" "${WORKDIR}/${P}/samples/dnn/" || die
+	fi
+
+	if use contrib; then
+		cd  "${WORKDIR}/${PN}_contrib-${PV}" || die
+		if use contribxfeatures2d; then
+			mv "${WORKDIR}"/*.i "${WORKDIR}/${PN}_contrib-${PV}"/modules/xfeatures2d/src/ || die
+		fi
+	fi
+
+	if use download; then
+		mv "${WORKDIR}/${PN}-extdep-4.4.0" "${WORKDIR}/${P}/.cache/" || die
+	fi
+
+	java-pkg-opt-2_src_prepare
+
+	# this really belongs in src_prepare() too
+	JAVA_ANT_ENCODING="iso-8859-1"
+	# set encoding so even this cmake build will pick it up.
+	export ANT_OPTS+=" -Dfile.encoding=iso-8859-1"
+	java-ant-2_src_configure
+}
+
+multilib_src_configure() {
+	# please dont sort here, order is the same as in CMakeLists.txt
+	GLOBALCMAKEARGS=(
+	# Optional 3rd party components
+	# ===================================================
+		-DENABLE_DOWNLOAD=$(usex download)
+		-DWITH_QUIRC=OFF # Do not have dependencies
+		-DWITH_1394=$(usex ieee1394)
+	#	-DWITH_AVFOUNDATION=OFF # IOS
+		-DWITH_VTK=$(multilib_native_usex vtk)
+		-DWITH_EIGEN=$(usex eigen)
+		-DWITH_VFW=OFF # Video windows support
+		-DWITH_FFMPEG=$(usex ffmpeg)
+		-DWITH_GSTREAMER=$(usex gstreamer)
+		-DWITH_GSTREAMER_0_10=OFF	# Don't want this
+		-DWITH_GTK=$(usex gtk3)
+		-DWITH_GTK_2_X=OFF # only want gtk3 nowadays
+		-DWITH_IPP=OFF
+		# Jasper was removed from tree because of security problems.
+		# Upstream were/are making progress. We use openjpeg instead.
+		# bug 734284
+		-DWITH_JASPER=OFF
+		-DWITH_JPEG=$(usex jpeg)
+		-DWITH_OPENJPEG=$(usex jpeg2k)
+		-DWITH_WEBP=$(usex webp)
+		-DWITH_OPENEXR=$(multilib_native_usex openexr)
+		-DWITH_OPENGL=$(usex opengl)
+		-DWITH_OPENVX=OFF
+		-DWITH_OPENNI=OFF	# Not packaged
+		-DWITH_OPENNI2=OFF	# Not packaged
+		-DWITH_PNG=$(usex png)
+		-DWITH_GDCM=OFF
+		-DWITH_PVAPI=OFF
+		-DWITH_GIGEAPI=OFF
+		-DWITH_ARAVIS=OFF
+		-DWITH_QT=$(multilib_native_usex qt5 5 OFF)
+		-DWITH_WIN32UI=OFF		# Windows only
+	#	-DWITH_QUICKTIME=OFF
+	#	-DWITH_QTKIT=OFF
+		-DWITH_TBB=$(usex threads)
+		-DWITH_OPENMP=$(usex openmp)
+		-DWITH_CSTRIPES=OFF
+		-DWITH_PTHREADS_PF=ON
+		-DWITH_TIFF=$(usex tiff)
+		-DWITH_UNICAP=OFF		# Not packaged
+		-DWITH_V4L=$(usex v4l)
+		-DWITH_LIBV4L=$(usex v4l)
+	#	-DWITH_DSHOW=ON			# direct show supp
+		-DWITH_MSMF=OFF
+		-DWITH_XIMEA=OFF	# Windows only
+		-DWITH_XINE=$(multilib_native_usex xine)
+		-DWITH_CLP=OFF
+		-DWITH_OPENCL=$(usex opencl)
+		-DWITH_OPENCL_SVM=OFF
+		-DWITH_OPENCLAMDFFT=$(usex opencl)
+		-DWITH_OPENCLAMDBLAS=$(usex opencl)
+		-DWITH_DIRECTX=OFF
+		-DWITH_INTELPERC=OFF
+		-DWITH_IPP_A=OFF
+		-DWITH_MATLAB=OFF
+		-DWITH_VA=$(usex vaapi)
+		-DWITH_VA_INTEL=$(usex vaapi)
+		-DWITH_GDAL=$(multilib_native_usex gdal)
+		-DWITH_GPHOTO2=$(usex gphoto2)
+		-DWITH_LAPACK=$(multilib_native_usex lapack)
+		-DWITH_ITT=OFF # 3dparty libs itt_notify
+	# ===================================================
+	# CUDA build components: nvidia-cuda-toolkit takes care of GCC version
+	# ===================================================
+		-DWITH_CUDA=$(multilib_native_usex cuda)
+		-DWITH_CUBLAS=$(multilib_native_usex cuda)
+		-DWITH_CUFFT=$(multilib_native_usex cuda)
+		-DWITH_NVCUVID=OFF
+	#	-DWITH_NVCUVID=$(usex cuda)
+		-DCUDA_NPP_LIBRARY_ROOT_DIR=$(usex cuda "${EPREFIX}/opt/cuda" "")
+	# ===================================================
+	# OpenCV build components
+	# ===================================================
+		-DBUILD_SHARED_LIBS=ON
+		-DBUILD_JAVA=$(multilib_native_usex java) # Ant needed, no compile flag
+		-DBUILD_ANDROID_EXAMPLES=OFF
+		-DBUILD_opencv_apps=$(usex opencvapps ON OFF)
+		-DBUILD_DOCS=OFF # Doesn't install anyways.
+		-DBUILD_EXAMPLES=$(multilib_native_usex examples)
+		-DBUILD_PERF_TESTS=OFF
+		-DBUILD_TESTS=$(multilib_native_usex testprograms)
+		-DBUILD_WITH_DEBUG_INFO=$(usex debug)
+	#	-DBUILD_WITH_STATIC_CRT=OFF
+		-DBUILD_WITH_DYNAMIC_IPP=OFF
+		-DBUILD_FAT_JAVA_LIB=OFF
+	#	-DBUILD_ANDROID_SERVICE=OFF
+		-DBUILD_CUDA_STUBS=$(multilib_native_usex cuda)
+		-DOPENCV_EXTRA_MODULES_PATH=$(usex contrib "${WORKDIR}/opencv_contrib-${PV}/modules" "")
+	# ===================================================
+	# OpenCV installation options
+	# ===================================================
+		-DINSTALL_CREATE_DISTRIB=OFF
+		-DINSTALL_C_EXAMPLES=$(multilib_native_usex examples)
+		-DINSTALL_TESTS=$(multilib_native_usex testprograms)
+		-DINSTALL_PYTHON_EXAMPLES=$(multilib_native_usex examples)
+	#	-DINSTALL_ANDROID_EXAMPLES=OFF
+		-DINSTALL_TO_MANGLED_PATHS=OFF
+		-DOPENCV_GENERATE_PKGCONFIG=ON
+		# opencv uses both ${CMAKE_INSTALL_LIBDIR} and ${LIB_SUFFIX}
+		# to set its destination libdir
+		-DLIB_SUFFIX=
+	# ===================================================
+	# OpenCV build options
+	# ===================================================
+		-DENABLE_CCACHE=OFF
+		# bug 733796, but PCH is a risky game in CMake anyway
+		-DENABLE_PRECOMPILED_HEADERS=OFF
+		-DENABLE_SOLUTION_FOLDERS=OFF
+		-DENABLE_PROFILING=OFF
+		-DENABLE_COVERAGE=OFF
+
+		-DHAVE_opencv_java=$(multilib_native_usex java YES NO)
+		-DENABLE_NOISY_WARNINGS=OFF
+		-DOPENCV_WARNINGS_ARE_ERRORS=OFF
+		-DENABLE_IMPL_COLLECTION=OFF
+		-DENABLE_INSTRUMENTATION=OFF
+		-DGENERATE_ABI_DESCRIPTOR=OFF
+		-DDOWNLOAD_EXTERNAL_TEST_DATA=OFF
+		-DENABLE_LTO=$(usex lto)
+	# ===================================================
+	# things we want to be hard off or not yet figured out
+	# ===================================================
+		-DBUILD_PACKAGE=OFF
+	# ===================================================
+	# Not building protobuf but update files bug #631418
+	# ===================================================
+		-DBUILD_PROTOBUF=OFF
+		-DPROTOBUF_UPDATE_FILES=ON
+	# ===================================================
+	# things we want to be hard enabled not worth useflag
+	# ===================================================
+		-DCMAKE_SKIP_RPATH=ON
+		-DOPENCV_DOC_INSTALL_PATH=
+		-DBUILD_opencv_features2d=$(usex features2d ON OFF)
+	)
+
+	# ==================================================
+	# cpu flags, should solve 633900
+	#===================================================
+	local CPU_BASELINE=""
+	for i in "${CPU_FEATURES_MAP[@]}" ; do
+		if [[ ${ABI} != x86 || ${i%:*} != "cpu_flags_x86_avx2" ]]; then # workaround for Bug 747163
+			use ${i%:*} && CPU_BASELINE="${CPU_BASELINE}${i#*:};"
+		fi
+	done
+
+	GLOBALCMAKEARGS+=(
+		-DOPENCV_CPU_OPT_IMPLIES_IGNORE=ON
+		-DCPU_BASELINE=${CPU_BASELINE}
+		-DCPU_DISPATCH=
+	)
+
+	# ===================================================
+	# OpenCV Contrib Modules
+	# ===================================================
+	if use contrib; then
+		GLOBALCMAKEARGS+=(
+			-DBUILD_opencv_dnn=$(usex contribdnn ON OFF)
+			-DTINYDNN_ROOT="${WORKDIR}/tiny-dnn-${TINY_DNN_PV}"
+			-DBUILD_opencv_dnns_easily_fooled=OFF
+			-DBUILD_opencv_xfeatures2d=$(usex contribxfeatures2d ON OFF)
+			-DBUILD_opencv_cvv=$(usex contribcvv ON OFF)
+			-DBUILD_opencv_hdf=$(multilib_native_usex contribhdf ON OFF)
+			-DBUILD_opencv_sfm=$(usex contribsfm ON OFF)
+			-DBUILD_opencv_freetype=$(usex contribfreetype ON OFF)
+			-DBUILD_opencv_ovis=$(usex contribovis ON OFF)
+		)
+
+		if multilib_is_native_abi; then
+			GLOBALCMAKEARGS+=(
+				-DCMAKE_DISABLE_FIND_PACKAGE_Tesseract=$(usex !tesseract)
+			)
+		else
+			GLOBALCMAKEARGS+=(
+				-DCMAKE_DISABLE_FIND_PACKAGE_Tesseract=ON
+			)
+		fi
+	fi
+
+	# workaround for bug 413429
+	tc-export CC CXX
+
+	local mycmakeargs=(
+		${GLOBALCMAKEARGS[@]}
+		-DPYTHON_EXECUTABLE=OFF
+		-DINSTALL_PYTHON_EXAMPLES=OFF
+		-DBUILD_opencv_python2=OFF
+		-DBUILD_opencv_python3=OFF
+	)
+
+	cmake_src_configure
+
+	# Copy face_land_model to ${CMAKE_BINARY_DIR}/${OPENCV_TEST_DATA_INSTALL_PATH}
+	# TODO patch ocv_download to copy files into destination dirs
+	if use contribdnn; then
+		mkdir -p "${BUILD_DIR}"/share/OpenCV/testdata/cv/face/ || die
+		cp "${WORKDIR}"/face_landmark_model.dat "${BUILD_DIR}"/share/OpenCV/testdata/cv/face/ || die
+	fi
+
+}
+
+python_module_compile() {
+	local BUILD_DIR="${orig_BUILD_DIR}"
+	local mycmakeargs=( ${GLOBALCMAKEARGS[@]} )
+
+	# Set all python variables to load the correct Gentoo paths
+	mycmakeargs+=(
+		# python_setup alters PATH and sets this as wrapper
+		# to the correct interpreter we are building for
+		-DPYTHON_DEFAULT_EXECUTABLE=${EPYTHON}
+		-DINSTALL_PYTHON_EXAMPLES=$(usex examples)
+	)
+
+	# Regenerate cache file. Can't use rebuild_cache as it won't
+	# have the Gentoo specific options.
+	rm CMakeCache.txt || die "rm failed"
+	cmake_src_configure
+	cmake_src_compile
+	cmake_src_install
+
+	# Remove compiled binary so new version compiles
+	# Avoid conflicts with new module builds as build system doesn't
+	# really support it.
+	rm -r modules/python3 || die "rm failed"
+
+	python_optimize "${ED}"/$(python_get_sitedir)
+}
+
+multilib_src_install() {
+	cmake_src_install
+
+	# Build and install the python modules for all targets
+	if multilib_is_native_abi && use python; then
+		local orig_BUILD_DIR="${BUILD_DIR}"
+		python_foreach_impl python_module_compile
+	fi
+}