media-libs/opencv: Enable multilib builds for 3.1.0 & 3.2.0

2 files changed, 630 insertions, 0 deletions

diff --git a/media-libs/opencv/opencv-3.1.0-r8.ebuild b/media-libs/opencv/opencv-3.1.0-r8.ebuild
new file mode 100644
index 000000000000..a4f6ffd7f961
--- /dev/null
+++ b/media-libs/opencv/opencv-3.1.0-r8.ebuild
@@ -0,0 +1,294 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+PYTHON_COMPAT=( python{2_7,3_4,3_5} )
+
+inherit toolchain-funcs python-r1 java-pkg-opt-2 java-ant-2 \
+	cmake-multilib
+
+DESCRIPTION="A collection of algorithms and sample code for
+	various computer vision problems"
+HOMEPAGE="http://opencv.org"
+
+BASE_URI="https://github.com/${PN}/${PN}"
+#commit from Thu, 02 Jun 2016
+CONTRIB_URI="75b3ea9f72fdb083140fc63855b7677d67748376"
+CONTRIB_P="${P}_contrib-${CONTRIB_URI:0:7}"
+
+SRC_URI="${BASE_URI}/archive/${PV}.tar.gz -> ${P}.tar.gz
+	contrib? ( ${BASE_URI}_contrib/archive/${CONTRIB_URI}.tar.gz -> ${CONTRIB_P}.tar.gz )"
+LICENSE="BSD"
+SLOT="0/3.1" # subslot = libopencv* soname version
+KEYWORDS="~amd64 ~arm ~ppc ~ppc64 ~x86 ~amd64-linux"
+IUSE="contrib cuda +eigen examples ffmpeg gdal gflags glog gphoto2 gstreamer gtk \
+	ieee1394 ipp jpeg jpeg2k libav opencl openexr opengl openmp pch png \
+	+python qt5 tesseract testprograms threads tiff vaapi v4l vtk webp xine \
+	contrib_cvv contrib_hdf contrib_sfm"
+
+# OpenGL needs gtk or Qt installed to activate, otherwise build system
+# will silently disable it without the user knowing, which defeats the
+# purpose of the opengl use flag.
+REQUIRED_USE="
+	cuda? ( tesseract? ( opencl ) )
+	gflags? ( contrib )
+	glog? ( contrib )
+	contrib_cvv? ( contrib qt5 )
+	contrib_hdf? ( contrib )
+	contrib_sfm? ( contrib eigen gflags glog )
+	opengl? ( || ( gtk qt5 ) )
+	python? ( ${PYTHON_REQUIRED_USE} )
+	tesseract? ( contrib )"
+
+# The following logic is intrinsic in the build system, but we do not enforce
+# it on the useflags since this just blocks emerging pointlessly:
+#	gtk? ( !qt5 )
+#	openmp? ( !threads )
+
+RDEPEND="
+	app-arch/bzip2[${MULTILIB_USEDEP}]
+	sys-libs/zlib[${MULTILIB_USEDEP}]
+	cuda? ( dev-util/nvidia-cuda-toolkit:0= )
+	ffmpeg? (
+		libav? ( media-video/libav:0=[${MULTILIB_USEDEP}] )
+		!libav? ( 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}]
+	)
+	gtk? (
+		dev-libs/glib:2[${MULTILIB_USEDEP}]
+		x11-libs/gtk+:2[${MULTILIB_USEDEP}]
+		opengl? ( x11-libs/gtkglext[${MULTILIB_USEDEP}] )
+	)
+	java? ( >=virtual/jre-1.6:* )
+	jpeg? ( virtual/jpeg:0[${MULTILIB_USEDEP}] )
+	jpeg2k? ( media-libs/jasper:=[${MULTILIB_USEDEP}] )
+	ieee1394? (
+		media-libs/libdc1394[${MULTILIB_USEDEP}]
+		sys-libs/libraw1394[${MULTILIB_USEDEP}]
+	)
+	ipp? ( sci-libs/ipp )
+	contrib_hdf? ( sci-libs/hdf5 )
+	opencl? ( virtual/opencl[${MULTILIB_USEDEP}] )
+	openexr? ( media-libs/openexr[${MULTILIB_USEDEP}] )
+	opengl? (
+		virtual/opengl[${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=] )
+	threads? ( dev-cpp/tbb[${MULTILIB_USEDEP}] )
+	tiff? ( media-libs/tiff:0[${MULTILIB_USEDEP}] )
+	v4l? ( >=media-libs/libv4l-0.8.3[${MULTILIB_USEDEP}] )
+	vtk? ( sci-libs/vtk[rendering] )
+	webp? ( media-libs/libwebp[${MULTILIB_USEDEP}] )
+	xine? ( media-libs/xine-lib )"
+DEPEND="${RDEPEND}
+	virtual/pkgconfig[${MULTILIB_USEDEP}]
+	eigen? ( dev-cpp/eigen:3 )
+	java?  ( >=virtual/jdk-1.6 )"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-3.0.0-gles.patch
+	"${FILESDIR}"/${P}-cmake-no-opengl.patch
+	"${FILESDIR}"/${P}-git-autodetect.patch
+	"${FILESDIR}"/${P}-java-magic.patch
+	"${FILESDIR}"/${P}-remove-graphcut-for-cuda-8.patch
+	"${FILESDIR}"/${P}-find-libraries-fix.patch
+)
+
+GLOBALCMAKEARGS=()
+
+pkg_pretend() {
+	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
+}
+
+pkg_setup() {
+	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
+	java-pkg-opt-2_pkg_setup
+}
+
+src_prepare() {
+	cmake-utils_src_prepare
+
+	# remove bundled stuff
+	rm -rf 3rdparty || die "Removing 3rd party components failed"
+	sed -e '/add_subdirectory(.*3rdparty.*)/ d' \
+	    -i CMakeLists.txt cmake/*cmake || die
+
+	java-pkg-opt-2_src_prepare
+
+	# this really belongs in src_prepare() too
+	JAVA_ANT_ENCODING="iso-8859-1"
+	# set encoding so even this cmake build will pick it up.
+	export ANT_OPTS+=" -Dfile.encoding=iso-8859-1"
+	java-ant-2_src_configure
+}
+
+multilib_src_configure() {
+	# please dont sort here, order is the same as in CMakeLists.txt
+	GLOBALCMAKEARGS=(
+	# Optional 3rd party components
+	# ===================================================
+		-DWITH_1394=$(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=$(usex gtk)
+		-DWITH_GTK_2_X=$(usex gtk)
+		-DWITH_IPP=$(multilib_native_usex ipp)
+		-DWITH_JASPER=$(usex jpeg2k)
+		-DWITH_JPEG=$(usex jpeg)
+		-DWITH_WEBP=$(usex webp)
+		-DWITH_OPENEXR=$(usex openexr)
+		-DWITH_OPENGL=$(usex opengl)
+		-DWITH_OPENNI=OFF 		# Not packaged
+		-DWITH_OPENNI2=OFF 		# Not packaged
+		-DWITH_PNG=$(usex png)
+		-DWITH_PVAPI=OFF		# Not packaged
+		-DWITH_GIGEAPI=OFF
+		-DWITH_QT=$(multilib_native_usex qt5 5 OFF)
+		-DWITH_WIN32UI=OFF		# Windows only
+		-DWITH_QUICKTIME=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=$(usex opencl)
+		-DWITH_DIRECTX=OFF
+		-DWITH_INTELPERC=OFF
+		-DWITH_JAVA=$(multilib_native_usex java) # Ant needed, no compile flag
+		-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)
+	# ===================================================
+	# 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=$(multilib_native_usex cuda)
+		-DCUDA_NPP_LIBRARY_ROOT_DIR=$(usex cuda "${EPREFIX}/opt/cuda" "")
+	# ===================================================
+	# OpenCV build components
+	# ===================================================
+		-DBUILD_SHARED_LIBS=ON
+		-DBUILD_ANDROID_EXAMPLES=OFF
+		-DBUILD_DOCS=OFF # Doesn't install anyways.
+		-DBUILD_EXAMPLES=$(multilib_native_usex examples)
+		-DBUILD_PERF_TESTS=OFF
+		-DBUILD_TESTS=$(multilib_native_usex testprograms)
+		-DOPENCV_EXTRA_MODULES_PATH=$(usex contrib "${WORKDIR}/opencv_contrib-${CONTRIB_URI}/modules" "")
+	# ===================================================
+	# OpenCV installation options
+	# ===================================================
+		-DINSTALL_C_EXAMPLES=$(multilib_native_usex examples)
+		-DINSTALL_TESTS=$(multilib_native_usex testprograms)
+	# ===================================================
+	# OpenCV build options
+	# ===================================================
+		-DENABLE_PRECOMPILED_HEADERS=$(usex pch)
+		-DHAVE_opencv_java=$(multilib_native_usex java YES NO)
+	# ===================================================
+	# things we want to be hard off or not yet figured out
+	# ===================================================
+		-DBUILD_PACKAGE=OFF
+		-DENABLE_PROFILING=OFF
+	# ===================================================
+	# things we want to be hard enabled not worth useflag
+	# ===================================================
+		-DCMAKE_SKIP_RPATH=ON
+		-DOPENCV_DOC_INSTALL_PATH=
+	)
+
+	# ===================================================
+	# OpenCV Contrib Modules
+	# ===================================================
+	if use contrib; then
+		GLOBALCMAKEARGS+=(
+			-DBUILD_opencv_dnn=OFF
+			-DBUILD_opencv_dnns_easily_fooled=OFF
+			-DBUILD_opencv_cvv=$(usex contrib_cvv ON OFF)
+			-DBUILD_opencv_hdf=$(multilib_native_usex contrib_hdf ON OFF)
+			-DBUILD_opencv_sfm=$(usex contrib_sfm ON OFF)
+		)
+	fi
+
+	# workaround for bug 413429
+	tc-export CC CXX
+
+	local mycmakeargs=( ${GLOBALCMAKEARGS[@]}
+		-DPYTHON_EXECUTABLE=OFF
+		-DINSTALL_PYTHON_EXAMPLES=OFF
+	)
+
+	cmake-utils_src_configure
+}
+
+python_module_compile() {
+	local BUILD_DIR=${orig_BUILD_DIR}
+	local mycmakeargs=( ${GLOBALCMAKEARGS[@]} )
+
+	# Set all python variables to load the correct Gentoo paths
+	mycmakeargs+=(
+		# upstream doesn't really care about 2/3, and if we don't
+		# disable this, it builds python2 + python3 module for the same
+		# version of Python 3 (i.e. two identical modules)...
+		-DPYTHON3_EXECUTABLE=/bin/false
+		-DINSTALL_PYTHON_EXAMPLES=$(usex examples)
+	)
+
+	# Regenerate cache file. Can't use rebuild_cache as it won't
+	# have the Gentoo specific options.
+	rm -rf CMakeCache.txt || die "rm failed"
+	cmake-utils_src_configure
+	cmake-utils_src_compile
+	cmake-utils_src_install
+
+	# Remove compiled binary so new version compiles
+	# Avoid conflicts with new module builds as build system doesn't
+	# really support it.
+	rm -rf modules/python2 || die "rm failed"
+}
+
+multilib_src_install() {
+	cmake-utils_src_install
+
+	# Build and install the python modules for all targets
+	if multilib_is_native_abi && use python; then
+		local orig_BUILD_DIR=${BUILD_DIR}
+		python_foreach_impl python_module_compile
+	fi
+}
diff --git a/media-libs/opencv/opencv-3.2.0-r3.ebuild b/media-libs/opencv/opencv-3.2.0-r3.ebuild
new file mode 100644
index 000000000000..ea277d363e95
--- /dev/null
+++ b/media-libs/opencv/opencv-3.2.0-r3.ebuild
@@ -0,0 +1,336 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+PYTHON_COMPAT=( python{2_7,3_4,3_5} )
+
+inherit toolchain-funcs python-r1 java-pkg-opt-2 java-ant-2 \
+	cmake-multilib
+
+DESCRIPTION="A collection of algorithms and sample code for various computer vision problems"
+HOMEPAGE="http://opencv.org"
+
+SRC_URI="https://github.com/${PN}/${PN}/archive/${PV}.tar.gz -> ${P}.tar.gz
+	contrib? ( https://github.com/${PN}/${PN}_contrib/archive/${PV}.tar.gz -> ${P}_contrib.tar.gz
+		contrib_xfeatures2d? ( http://dev.gentoo.org/~amynka/snap/vgg_boostdesc-${PV}.tar.gz ) )"
+LICENSE="BSD"
+SLOT="0/3.2" # subslot = libopencv* soname version
+KEYWORDS="~amd64 ~arm ~arm64 ~ppc ~ppc64 ~x86 ~amd64-linux"
+IUSE="contrib cuda debug +eigen examples ffmpeg gdal gflags glog gphoto2 gstreamer gtk ieee1394 ipp jpeg jpeg2k lapack libav opencl openexr opengl openmp pch png +python qt5 tesseract testprograms threads tiff vaapi v4l vtk webp xine contrib_cvv contrib_hdf contrib_sfm contrib_xfeatures2d"
+
+# OpenGL needs gtk or Qt installed to activate, otherwise build system
+# will silently disable it without the user knowing, which defeats the
+# purpose of the opengl use flag.
+REQUIRED_USE="
+	cuda? ( tesseract? ( opencl ) )
+	gflags? ( contrib )
+	glog? ( contrib )
+	contrib_cvv? ( contrib qt5 )
+	contrib_hdf? ( contrib )
+	contrib_sfm? ( contrib eigen gflags glog )
+	opengl? ( || ( gtk qt5 ) )
+	python? ( ${PYTHON_REQUIRED_USE} )
+	tesseract? ( contrib )"
+
+# The following logic is intrinsic in the build system, but we do not enforce
+# it on the useflags since this just blocks emerging pointlessly:
+#	gtk? ( !qt5 )
+#	openmp? ( !threads )
+
+RDEPEND="
+	app-arch/bzip2[${MULTILIB_USEDEP}]
+	sys-libs/zlib[${MULTILIB_USEDEP}]
+	cuda? ( dev-util/nvidia-cuda-toolkit:0= )
+	contrib_hdf? ( sci-libs/hdf5 )
+	ffmpeg? (
+		libav? ( media-video/libav:0=[${MULTILIB_USEDEP}] )
+		!libav? ( 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}]
+	)
+	gtk? (
+		dev-libs/glib:2[${MULTILIB_USEDEP}]
+		x11-libs/gtk+:2[${MULTILIB_USEDEP}]
+		opengl? ( x11-libs/gtkglext[${MULTILIB_USEDEP}] )
+	)
+	ieee1394? (
+		media-libs/libdc1394[${MULTILIB_USEDEP}]
+		sys-libs/libraw1394[${MULTILIB_USEDEP}]
+	)
+	ipp? ( sci-libs/ipp )
+	java? ( >=virtual/jre-1.6:* )
+	jpeg? ( virtual/jpeg:0[${MULTILIB_USEDEP}] )
+	jpeg2k? ( media-libs/jasper:=[${MULTILIB_USEDEP}] )
+	lapack? ( virtual/lapack )
+	opencl? ( virtual/opencl[${MULTILIB_USEDEP}] )
+	openexr? ( media-libs/openexr[${MULTILIB_USEDEP}] )
+	opengl? (
+		virtual/opengl[${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=] )
+	threads? ( dev-cpp/tbb[${MULTILIB_USEDEP}] )
+	tiff? ( media-libs/tiff:0[${MULTILIB_USEDEP}] )
+	v4l? ( >=media-libs/libv4l-0.8.3[${MULTILIB_USEDEP}] )
+	vtk? ( sci-libs/vtk[rendering] )
+	webp? ( media-libs/libwebp[${MULTILIB_USEDEP}] )
+	xine? ( media-libs/xine-lib )"
+DEPEND="${RDEPEND}
+	virtual/pkgconfig[${MULTILIB_USEDEP}]
+	eigen? ( dev-cpp/eigen:3 )
+	java?  ( >=virtual/jdk-1.6 )"
+
+PATCHES=(
+	"${FILESDIR}/${PN}-3.0.0-gles.patch"
+	"${FILESDIR}/${PN}-3.1.0-java-magic.patch"
+	"${FILESDIR}/${PN}-3.1.0-find-libraries-fix.patch"
+	"${FILESDIR}/${P}-vtk.patch"
+	"${FILESDIR}/${P}-gcc-6.0.patch"
+	"${FILESDIR}/${PN}-3.2.0-fix_ussage_cpu_instructions.patch"
+	"${FILESDIR}/${P}-cpu-mno-sse2.patch"
+)
+
+pkg_pretend() {
+	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
+}
+
+pkg_setup() {
+	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
+	java-pkg-opt-2_pkg_setup
+}
+
+src_prepare() {
+	cmake-utils_src_prepare
+
+	# remove bundled stuff
+	rm -rf 3rdparty || die "Removing 3rd party components failed"
+	sed -e '/add_subdirectory(.*3rdparty.*)/ d' \
+		-i CMakeLists.txt cmake/*cmake || die
+
+	if use contrib && use contrib_xfeatures2d; then
+		cd  "${WORKDIR}/${PN}_contrib-${PV}" || die
+		eapply "${FILESDIR}/${P}-contrib_xfeatures2d-autodownload.patch"
+		mv "${WORKDIR}"/*.i "${WORKDIR}/${PN}_contrib-${PV}"/modules/xfeatures2d/src/ || 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
+	# ===================================================
+		-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 gtk)
+		-DWITH_GTK_2_X=$(usex gtk)
+		-DWITH_IPP=$(multilib_native_usex ipp)
+		-DWITH_JASPER=$(usex jpeg2k)
+		-DWITH_JPEG=$(usex jpeg)
+		-DWITH_WEBP=$(usex webp)
+		-DWITH_OPENEXR=$(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_JAVA=$(multilib_native_usex java) # Ant needed, no compile flag
+		-DWITH_IPP_A=OFF
+		-DWITH_MATLAB=OFF
+		-DWITH_VA=$(usex vaapi)
+		-DWITH_VA_INTEL=$(usex vaapi)
+		-DWITH_GDAL=$(multilib_native_usex gdal)
+		-DWITH_GPHOTO2=$(usex gphoto2)
+		-DWITH_LAPACK=$(multilib_native_usex lapack)
+	# ===================================================
+	# 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_ANDROID_EXAMPLES=OFF
+		-BUILD_opencv_apps=
+		-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=$(usex debug)
+	#	-DBUILD_WITH_STATIC_CRT=OFF
+		-DBUILD_WITH_DYNAMIC_IPP=OFF
+		-DBUILD_FAT_JAVA_LIB=$(multilib_native_usex java)
+	#	-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=$(multilib_native_usex examples)
+	#	-DINSTALL_ANDROID_EXAMPLES=OFF
+		-DINSTALL_TO_MANGLED_PATHS=OFF
+	# ===================================================
+	# OpenCV build options
+	# ===================================================
+		-DENABLE_CCACHE=OFF
+		-DENABLE_PRECOMPILED_HEADERS=$(usex pch)
+		-DENABLE_SOLUTION_FOLDERS=OFF
+		-DENABLE_PROFILING=OFF
+		-DENABLE_COVERAGE=OFF
+		-DENABLE_OMIT_FRAME_POINTER=OFF
+		-DENABLE_FAST_MATH=OFF
+		-DENABLE_SSE=OFF
+		-DENABLE_SSE2=OFF
+		-DENABLE_SSE3=OFF
+		-DENABLE_SSSE3=OFF
+		-DENABLE_SSE41=OFF
+		-DENABLE_SSE42=OFF
+		-DENABLE_POPCNT=OFF
+		-DENABLE_AVX=OFF
+		-DENABLE_AVX=OFF
+		-DENABLE_AVX2=OFF
+		-DENABLE_FMA3=OFF
+		-DENABLE_NEON=OFF
+
+		-DHAVE_opencv_java=$(multilib_native_usex java YES NO)
+		-DENABLE_NOISY_WARNINGS=OFF
+		-DOPENCV_WARNINGS_ARE_ERRORS=OFF
+		-DENABLE_IMPL_COLLECTION=OFF
+		-DENABLE_INSTRUMENTATION=OFF
+		-DGENERATE_ABI_DESCRIPTOR=OFF
+		-DDOWNLOAD_EXTERNAL_TEST_DATA=OFF
+	# ===================================================
+	# things we want to be hard off or not yet figured out
+	# ===================================================
+		-DBUILD_PACKAGE=OFF
+		-DENABLE_PROFILING=OFF
+	# ===================================================
+	# things we want to be hard enabled not worth useflag
+	# ===================================================
+		-DCMAKE_SKIP_RPATH=ON
+		-DOPENCV_DOC_INSTALL_PATH=
+	)
+
+	# ===================================================
+	# OpenCV Contrib Modules
+	# ===================================================
+	if use contrib; then
+		GLOBALCMAKEARGS+=(
+			-DBUILD_opencv_dnn=OFF
+			-DBUILD_opencv_dnns_easily_fooled=OFF
+			-DBUILD_opencv_xfeatures2d=$(usex contrib_xfeatures2d ON OFF)
+			-DBUILD_opencv_cvv=$(usex contrib_cvv ON OFF)
+			-DBUILD_opencv_hdf=$(multilib_native_usex contrib_hdf ON OFF)
+			-DBUILD_opencv_sfm=$(usex contrib_sfm ON OFF)
+		)
+	fi
+
+	# workaround for bug 413429
+	tc-export CC CXX
+
+	local mycmakeargs=( ${GLOBALCMAKEARGS[@]}
+		-DPYTHON_EXECUTABLE=OFF
+		-DINSTALL_PYTHON_EXAMPLES=OFF
+	)
+
+	cmake-utils_src_configure
+}
+
+python_module_compile() {
+	local BUILD_DIR=${orig_BUILD_DIR}
+	local mycmakeargs=( ${GLOBALCMAKEARGS[@]} )
+
+	# Set all python variables to load the correct Gentoo paths
+	mycmakeargs+=(
+		# cheap trick: python_setup sets one of them as a symlink
+		# to the correct interpreter, and the other to fail-wrapper
+		-DPYTHON2_EXECUTABLE=$(type -P python2)
+		-DPYTHON3_EXECUTABLE=$(type -P python3)
+		-DINSTALL_PYTHON_EXAMPLES=$(usex examples)
+	)
+
+	# Regenerate cache file. Can't use rebuild_cache as it won't
+	# have the Gentoo specific options.
+	rm -rf CMakeCache.txt || die "rm failed"
+	cmake-utils_src_configure
+	cmake-utils_src_compile
+	cmake-utils_src_install
+
+	# Remove compiled binary so new version compiles
+	# Avoid conflicts with new module builds as build system doesn't
+	# really support it.
+	rm -rf modules/python2 || die "rm failed"
+}
+
+multilib_src_install() {
+	cmake-utils_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
+}