package/opencv3/opencv3.mk - buildroot - Git at Google

 ################################################################################
 #
 # opencv3
 #
 ################################################################################

 OPENCV3_VERSION = 3.4.12
 OPENCV3_SITE = $(call github,opencv,opencv,$(OPENCV3_VERSION))
 OPENCV3_INSTALL_STAGING = YES
 OPENCV3_LICENSE = BSD-3-Clause
 OPENCV3_LICENSE_FILES = LICENSE
 OPENCV3_SUPPORTS_IN_SOURCE_BUILD = NO

 OPENCV3_CXXFLAGS = $(TARGET_CXXFLAGS)

 # Uses __atomic_fetch_add_4
 ifeq ($(BR2_TOOLCHAIN_HAS_LIBATOMIC),y)
 OPENCV3_CXXFLAGS += -latomic
 endif

 # Fix c++11 build with missing std::exception_ptr
 ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_64735),y)
 OPENCV3_CXXFLAGS += -DCV__EXCEPTION_PTR=0
 endif

 ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_68485),y)
 OPENCV3_CXXFLAGS += -O0
 endif

 # OpenCV component options
 OPENCV3_CONF_OPTS += \
 	-DCMAKE_CXX_FLAGS="$(OPENCV3_CXXFLAGS)" \
 	-DBUILD_DOCS=OFF \
 	-DBUILD_PERF_TESTS=$(if $(BR2_PACKAGE_OPENCV3_BUILD_PERF_TESTS),ON,OFF) \
 	-DBUILD_TESTS=$(if $(BR2_PACKAGE_OPENCV3_BUILD_TESTS),ON,OFF) \
 	-DBUILD_WITH_DEBUG_INFO=OFF \
 	-DDOWNLOAD_EXTERNAL_TEST_DATA=OFF \
 	-DOPENCV_ENABLE_PKG_CONFIG=ON

 ifeq ($(BR2_PACKAGE_OPENCV3_BUILD_TESTS)$(BR2_PACKAGE_OPENCV3_BUILD_PERF_TESTS),)
 OPENCV3_CONF_OPTS += -DINSTALL_TEST=OFF
 else
 OPENCV3_CONF_OPTS += -DINSTALL_TEST=ON
 endif

 # OpenCV build options
 OPENCV3_CONF_OPTS += \
 	-DBUILD_WITH_STATIC_CRT=OFF \
 	-DENABLE_COVERAGE=OFF \
 	-DENABLE_FAST_MATH=ON \
 	-DENABLE_IMPL_COLLECTION=OFF \
 	-DENABLE_NOISY_WARNINGS=OFF \
 	-DENABLE_OMIT_FRAME_POINTER=ON \
 	-DENABLE_PRECOMPILED_HEADERS=OFF \
 	-DENABLE_PROFILING=OFF \
 	-DOPENCV_WARNINGS_ARE_ERRORS=OFF

 # OpenCV link options
 OPENCV3_CONF_OPTS += \
 	-DCMAKE_INSTALL_RPATH_USE_LINK_PATH=OFF \
 	-DCMAKE_SKIP_RPATH=OFF \
 	-DCMAKE_USE_RELATIVE_PATHS=OFF

 # OpenCV packaging options:
 OPENCV3_CONF_OPTS += \
 	-DBUILD_PACKAGE=OFF \
 	-DENABLE_SOLUTION_FOLDERS=OFF \
 	-DINSTALL_CREATE_DISTRIB=OFF

 # OpenCV module selection
 # * Modules on:
 #   - core: if not set, opencv does not build anything
 #   - hal: core's dependency
 # * Modules off:
 #   - android*: android stuff
 #   - apps: programs for training classifiers
 #   - java: java bindings
 #   - viz: missing VTK dependency
 #   - world: all-in-one module
 #
 # * Contrib modules from [1] are disabled:
 #   - opencv_contrib package is not available in Buildroot;
 #   - OPENCV3_EXTRA_MODULES_PATH is not set.
 #
 # [1] https://github.com/Itseez/opencv_contrib
 OPENCV3_CONF_OPTS += \
 	-DBUILD_opencv_androidcamera=OFF \
 	-DBUILD_opencv_apps=OFF \
 	-DBUILD_opencv_calib3d=$(if $(BR2_PACKAGE_OPENCV3_LIB_CALIB3D),ON,OFF) \
 	-DBUILD_opencv_core=ON \
 	-DBUILD_opencv_features2d=$(if $(BR2_PACKAGE_OPENCV3_LIB_FEATURES2D),ON,OFF) \
 	-DBUILD_opencv_flann=$(if $(BR2_PACKAGE_OPENCV3_LIB_FLANN),ON,OFF) \
 	-DBUILD_opencv_highgui=$(if $(BR2_PACKAGE_OPENCV3_LIB_HIGHGUI),ON,OFF) \
 	-DBUILD_opencv_imgcodecs=$(if $(BR2_PACKAGE_OPENCV3_LIB_IMGCODECS),ON,OFF) \
 	-DBUILD_opencv_imgproc=$(if $(BR2_PACKAGE_OPENCV3_LIB_IMGPROC),ON,OFF) \
 	-DBUILD_opencv_java=OFF \
 	-DBUILD_opencv_ml=$(if $(BR2_PACKAGE_OPENCV3_LIB_ML),ON,OFF) \
 	-DBUILD_opencv_objdetect=$(if $(BR2_PACKAGE_OPENCV3_LIB_OBJDETECT),ON,OFF) \
 	-DBUILD_opencv_photo=$(if $(BR2_PACKAGE_OPENCV3_LIB_PHOTO),ON,OFF) \
 	-DBUILD_opencv_shape=$(if $(BR2_PACKAGE_OPENCV3_LIB_SHAPE),ON,OFF) \
 	-DBUILD_opencv_stitching=$(if $(BR2_PACKAGE_OPENCV3_LIB_STITCHING),ON,OFF) \
 	-DBUILD_opencv_superres=$(if $(BR2_PACKAGE_OPENCV3_LIB_SUPERRES),ON,OFF) \
 	-DBUILD_opencv_ts=$(if $(BR2_PACKAGE_OPENCV3_LIB_TS),ON,OFF) \
 	-DBUILD_opencv_video=$(if $(BR2_PACKAGE_OPENCV3_LIB_VIDEO),ON,OFF) \
 	-DBUILD_opencv_videoio=$(if $(BR2_PACKAGE_OPENCV3_LIB_VIDEOIO),ON,OFF) \
 	-DBUILD_opencv_videostab=$(if $(BR2_PACKAGE_OPENCV3_LIB_VIDEOSTAB),ON,OFF) \
 	-DBUILD_opencv_viz=OFF \
 	-DBUILD_opencv_world=OFF

 # Hardware support options.
 #
 # * PowerPC and VFPv3 support are turned off since their only effects
 #   are altering CFLAGS, adding '-mcpu=G3 -mtune=G5' or '-mfpu=vfpv3'
 #   to them, which is already handled by Buildroot.
 # * NEON logic is needed as it is not only used to add CFLAGS, but
 #   also to enable additional NEON code.
 OPENCV3_CONF_OPTS += \
 	-DENABLE_POWERPC=OFF \
 	-DENABLE_NEON=$(if $(BR2_ARM_CPU_HAS_NEON),ON,OFF) \
 	-DENABLE_VFPV3=OFF

 # Cuda stuff
 OPENCV3_CONF_OPTS += \
 	-DBUILD_CUDA_STUBS=OFF \
 	-DBUILD_opencv_cudaarithm=OFF \
 	-DBUILD_opencv_cudabgsegm=OFF \
 	-DBUILD_opencv_cudacodec=OFF \
 	-DBUILD_opencv_cudafeatures2d=OFF \
 	-DBUILD_opencv_cudafilters=OFF \
 	-DBUILD_opencv_cudaimgproc=OFF \
 	-DBUILD_opencv_cudalegacy=OFF \
 	-DBUILD_opencv_cudaobjdetect=OFF \
 	-DBUILD_opencv_cudaoptflow=OFF \
 	-DBUILD_opencv_cudastereo=OFF \
 	-DBUILD_opencv_cudawarping=OFF \
 	-DBUILD_opencv_cudev=OFF \
 	-DWITH_CUBLAS=OFF \
 	-DWITH_CUDA=OFF \
 	-DWITH_CUFFT=OFF

 # NVidia stuff
 OPENCV3_CONF_OPTS += -DWITH_NVCUVID=OFF

 # AMD stuff
 OPENCV3_CONF_OPTS += \
 	-DWITH_OPENCLAMDBLAS=OFF \
 	-DWITH_OPENCLAMDFFT=OFF

 # Intel stuff
 OPENCV3_CONF_OPTS += \
 	-DBUILD_WITH_DYNAMIC_IPP=OFF \
 	-DWITH_INTELPERC=OFF \
 	-DWITH_IPP=OFF \
 	-DWITH_IPP_A=OFF \
 	-DWITH_TBB=OFF

 # Smartek stuff
 OPENCV3_CONF_OPTS += -DWITH_GIGEAPI=OFF

 # Prosilica stuff
 OPENCV3_CONF_OPTS += -DWITH_PVAPI=OFF

 # Ximea stuff
 OPENCV3_CONF_OPTS += -DWITH_XIMEA=OFF

 # Non-Linux support (Android options) must remain OFF:
 OPENCV3_CONF_OPTS += \
 	-DANDROID=OFF \
 	-DBUILD_ANDROID_CAMERA_WRAPPER=OFF \
 	-DBUILD_ANDROID_EXAMPLES=OFF \
 	-DBUILD_ANDROID_SERVICE=OFF \
 	-DBUILD_FAT_JAVA_LIB=OFF \
 	-DINSTALL_ANDROID_EXAMPLES=OFF \
 	-DWITH_ANDROID_CAMERA=OFF

 # Non-Linux support (Mac OSX options) must remain OFF:
 OPENCV3_CONF_OPTS += \
 	-DWITH_AVFOUNDATION=OFF \
 	-DWITH_CARBON=OFF \
 	-DWITH_QUICKTIME=OFF

 # Non-Linux support (Windows options) must remain OFF:
 OPENCV3_CONF_OPTS += \
 	-DWITH_CSTRIPES=OFF \
 	-DWITH_DSHOW=OFF \
 	-DWITH_MSMF=OFF \
 	-DWITH_VFW=OFF \
 	-DWITH_VIDEOINPUT=OFF \
 	-DWITH_WIN32UI=OFF

 # Software/3rd-party support options:
 # - disable all examples
 OPENCV3_CONF_OPTS += \
 	-DBUILD_EXAMPLES=OFF \
 	-DBUILD_JASPER=OFF \
 	-DBUILD_JPEG=OFF \
 	-DBUILD_OPENEXR=OFF \
 	-DBUILD_PNG=OFF \
 	-DBUILD_PROTOBUF=OFF \
 	-DBUILD_TIFF=OFF \
 	-DBUILD_ZLIB=OFF \
 	-DINSTALL_C_EXAMPLES=OFF \
 	-DINSTALL_PYTHON_EXAMPLES=OFF \
 	-DINSTALL_TO_MANGLED_PATHS=OFF

 # Disabled features (mostly because they are not available in Buildroot), but
 # - eigen: OpenCV does not use it, not take any benefit from it.
 OPENCV3_CONF_OPTS += \
 	-DWITH_1394=OFF \
 	-DWITH_CLP=OFF \
 	-DWITH_EIGEN=OFF \
 	-DWITH_GDAL=OFF \
 	-DWITH_GPHOTO2=OFF \
 	-DWITH_GSTREAMER_0_10=OFF \
 	-DWITH_LAPACK=OFF \
 	-DWITH_MATLAB=OFF \
 	-DWITH_OPENCL=OFF \
 	-DWITH_OPENCL_SVM=OFF \
 	-DWITH_OPENEXR=OFF \
 	-DWITH_OPENNI2=OFF \
 	-DWITH_OPENNI=OFF \
 	-DWITH_UNICAP=OFF \
 	-DWITH_VA=OFF \
 	-DWITH_VA_INTEL=OFF \
 	-DWITH_VTK=OFF \
 	-DWITH_XINE=OFF

 OPENCV3_DEPENDENCIES += host-pkgconf zlib

 ifeq ($(BR2_PACKAGE_OPENCV3_WITH_FFMPEG),y)
 OPENCV3_CONF_OPTS += -DWITH_FFMPEG=ON
 OPENCV3_DEPENDENCIES += ffmpeg bzip2
 else
 OPENCV3_CONF_OPTS += -DWITH_FFMPEG=OFF
 endif

 ifeq ($(BR2_PACKAGE_OPENCV3_WITH_GSTREAMER1),y)
 OPENCV3_CONF_OPTS += -DWITH_GSTREAMER=ON
 OPENCV3_DEPENDENCIES += gstreamer1 gst1-plugins-base
 else
 OPENCV3_CONF_OPTS += -DWITH_GSTREAMER=OFF
 endif

 ifeq ($(BR2_PACKAGE_OPENCV3_WITH_GTK)$(BR2_PACKAGE_OPENCV3_WITH_GTK3),)
 OPENCV3_CONF_OPTS += -DWITH_GTK=OFF -DWITH_GTK_2_X=OFF
 endif

 ifeq ($(BR2_PACKAGE_OPENCV3_WITH_GTK),y)
 OPENCV3_CONF_OPTS += -DWITH_GTK=ON -DWITH_GTK_2_X=ON
 OPENCV3_DEPENDENCIES += libgtk2
 endif

 ifeq ($(BR2_PACKAGE_OPENCV3_WITH_GTK3),y)
 OPENCV3_CONF_OPTS += -DWITH_GTK=ON -DWITH_GTK_2_X=OFF
 OPENCV3_DEPENDENCIES += libgtk3
 endif

 ifeq ($(BR2_PACKAGE_OPENCV3_WITH_JASPER),y)
 OPENCV3_CONF_OPTS += -DWITH_JASPER=ON
 OPENCV3_DEPENDENCIES += jasper
 else
 OPENCV3_CONF_OPTS += -DWITH_JASPER=OFF
 endif

 ifeq ($(BR2_PACKAGE_OPENCV3_WITH_JPEG),y)
 OPENCV3_CONF_OPTS += -DWITH_JPEG=ON
 OPENCV3_DEPENDENCIES += jpeg
 else
 OPENCV3_CONF_OPTS += -DWITH_JPEG=OFF
 endif

 ifeq ($(BR2_PACKAGE_OPENCV3_WITH_OPENGL),y)
 OPENCV3_CONF_OPTS += -DWITH_OPENGL=ON
 OPENCV3_DEPENDENCIES += libgl
 else
 OPENCV3_CONF_OPTS += -DWITH_OPENGL=OFF
 endif

 OPENCV3_CONF_OPTS += -DWITH_OPENMP=$(if $(BR2_TOOLCHAIN_HAS_OPENMP),ON,OFF)

 ifeq ($(BR2_PACKAGE_OPENCV3_WITH_PNG),y)
 OPENCV3_CONF_OPTS += -DWITH_PNG=ON
 OPENCV3_DEPENDENCIES += libpng
 else
 OPENCV3_CONF_OPTS += -DWITH_PNG=OFF
 endif

 ifeq ($(BR2_PACKAGE_OPENCV3_WITH_PROTOBUF),y)
 OPENCV3_CONF_OPTS += \
 	-DPROTOBUF_UPDATE_FILES=ON \
 	-DWITH_PROTOBUF=ON
 OPENCV3_DEPENDENCIES += protobuf
 else
 OPENCV3_CONF_OPTS += -DWITH_PROTOBUF=OFF
 endif

 ifeq ($(BR2_PACKAGE_OPENCV3_WITH_QT5),y)
 OPENCV3_CONF_OPTS += -DWITH_QT=5
 OPENCV3_DEPENDENCIES += qt5base
 else
 OPENCV3_CONF_OPTS += -DWITH_QT=OFF
 endif

 ifeq ($(BR2_PACKAGE_OPENCV3_WITH_TIFF),y)
 OPENCV3_CONF_OPTS += -DWITH_TIFF=ON
 OPENCV3_DEPENDENCIES += tiff
 else
 OPENCV3_CONF_OPTS += -DWITH_TIFF=OFF
 endif

 ifeq ($(BR2_PACKAGE_OPENCV3_WITH_V4L),y)
 OPENCV3_CONF_OPTS += \
 	-DWITH_LIBV4L=$(if $(BR2_PACKAGE_LIBV4L),ON,OFF) \
 	-DWITH_V4L=ON
 OPENCV3_DEPENDENCIES += $(if $(BR2_PACKAGE_LIBV4L),libv4l)
 else
 OPENCV3_CONF_OPTS += -DWITH_V4L=OFF -DWITH_LIBV4L=OFF
 endif

 ifeq ($(BR2_PACKAGE_OPENCV3_WITH_WEBP),y)
 OPENCV3_CONF_OPTS += -DWITH_WEBP=ON
 OPENCV3_DEPENDENCIES += webp
 else
 OPENCV3_CONF_OPTS += -DWITH_WEBP=OFF
 endif

 ifeq ($(BR2_PACKAGE_OPENCV3_LIB_PYTHON),y)
 OPENCV3_CONF_OPTS += \
 	-DBUILD_opencv_python2=OFF \
 	-DBUILD_opencv_python3=ON \
 	-DPYTHON3_EXECUTABLE=$(HOST_DIR)/bin/python3 \
 	-DPYTHON3_INCLUDE_PATH=$(STAGING_DIR)/usr/include/python$(PYTHON3_VERSION_MAJOR) \
 	-DPYTHON3_LIBRARIES=$(STAGING_DIR)/usr/lib/libpython$(PYTHON3_VERSION_MAJOR).so \
 	-DPYTHON3_NUMPY_INCLUDE_DIRS=$(STAGING_DIR)/usr/lib/python$(PYTHON3_VERSION_MAJOR)/site-packages/numpy/core/include \
 	-DPYTHON3_PACKAGES_PATH=/usr/lib/python$(PYTHON3_VERSION_MAJOR)/site-packages \
 	-DPYTHON3_NUMPY_VERSION=$(PYTHON_NUMPY_VERSION)
 OPENCV3_DEPENDENCIES += python3
 OPENCV3_KEEP_PY_FILES += usr/lib/python$(PYTHON3_VERSION_MAJOR)/site-packages/cv2/config*.py
 OPENCV3_CONF_ENV += $(PKG_PYTHON_DISTUTILS_ENV)
 OPENCV3_DEPENDENCIES += python-numpy
 else
 OPENCV3_CONF_OPTS += \
 	-DBUILD_opencv_python2=OFF \
 	-DBUILD_opencv_python3=OFF
 endif

 # Installation hooks:
 define OPENCV3_CLEAN_INSTALL_LICENSE
 	$(RM) -fr $(TARGET_DIR)/usr/share/licenses/opencv3
 endef
 OPENCV3_POST_INSTALL_TARGET_HOOKS += OPENCV3_CLEAN_INSTALL_LICENSE

 define OPENCV3_CLEAN_INSTALL_CMAKE
 	$(RM) -f $(TARGET_DIR)/usr/share/OpenCV/OpenCV*.cmake
 endef
 OPENCV3_POST_INSTALL_TARGET_HOOKS += OPENCV3_CLEAN_INSTALL_CMAKE

 define OPENCV3_CLEAN_INSTALL_VALGRIND
 	$(RM) -f $(TARGET_DIR)/usr/share/OpenCV/valgrind*
 endef
 OPENCV3_POST_INSTALL_TARGET_HOOKS += OPENCV3_CLEAN_INSTALL_VALGRIND

 ifneq ($(BR2_PACKAGE_OPENCV3_INSTALL_DATA),y)
 define OPENCV3_CLEAN_INSTALL_DATA
 	$(RM) -fr $(TARGET_DIR)/usr/share/OpenCV/haarcascades \
 		$(TARGET_DIR)/usr/share/OpenCV/lbpcascades
 endef
 OPENCV3_POST_INSTALL_TARGET_HOOKS += OPENCV3_CLEAN_INSTALL_DATA
 endif

 $(eval $(cmake-package))
	################################################################################
	#
	# opencv3
	#
	################################################################################

	OPENCV3_VERSION = 3.4.12
	OPENCV3_SITE = $(call github,opencv,opencv,$(OPENCV3_VERSION))
	OPENCV3_INSTALL_STAGING = YES
	OPENCV3_LICENSE = BSD-3-Clause
	OPENCV3_LICENSE_FILES = LICENSE
	OPENCV3_SUPPORTS_IN_SOURCE_BUILD = NO

	OPENCV3_CXXFLAGS = $(TARGET_CXXFLAGS)

	# Uses __atomic_fetch_add_4
	ifeq ($(BR2_TOOLCHAIN_HAS_LIBATOMIC),y)
	OPENCV3_CXXFLAGS += -latomic
	endif

	# Fix c++11 build with missing std::exception_ptr
	ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_64735),y)
	OPENCV3_CXXFLAGS += -DCV__EXCEPTION_PTR=0
	endif

	ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_68485),y)
	OPENCV3_CXXFLAGS += -O0
	endif

	# OpenCV component options
	OPENCV3_CONF_OPTS += \
	-DCMAKE_CXX_FLAGS="$(OPENCV3_CXXFLAGS)" \
	-DBUILD_DOCS=OFF \
	-DBUILD_PERF_TESTS=$(if $(BR2_PACKAGE_OPENCV3_BUILD_PERF_TESTS),ON,OFF) \
	-DBUILD_TESTS=$(if $(BR2_PACKAGE_OPENCV3_BUILD_TESTS),ON,OFF) \
	-DBUILD_WITH_DEBUG_INFO=OFF \
	-DDOWNLOAD_EXTERNAL_TEST_DATA=OFF \
	-DOPENCV_ENABLE_PKG_CONFIG=ON

	ifeq ($(BR2_PACKAGE_OPENCV3_BUILD_TESTS)$(BR2_PACKAGE_OPENCV3_BUILD_PERF_TESTS),)
	OPENCV3_CONF_OPTS += -DINSTALL_TEST=OFF
	else
	OPENCV3_CONF_OPTS += -DINSTALL_TEST=ON
	endif

	# OpenCV build options
	OPENCV3_CONF_OPTS += \
	-DBUILD_WITH_STATIC_CRT=OFF \
	-DENABLE_COVERAGE=OFF \
	-DENABLE_FAST_MATH=ON \
	-DENABLE_IMPL_COLLECTION=OFF \
	-DENABLE_NOISY_WARNINGS=OFF \
	-DENABLE_OMIT_FRAME_POINTER=ON \
	-DENABLE_PRECOMPILED_HEADERS=OFF \
	-DENABLE_PROFILING=OFF \
	-DOPENCV_WARNINGS_ARE_ERRORS=OFF

	# OpenCV link options
	OPENCV3_CONF_OPTS += \
	-DCMAKE_INSTALL_RPATH_USE_LINK_PATH=OFF \
	-DCMAKE_SKIP_RPATH=OFF \
	-DCMAKE_USE_RELATIVE_PATHS=OFF

	# OpenCV packaging options:
	OPENCV3_CONF_OPTS += \
	-DBUILD_PACKAGE=OFF \
	-DENABLE_SOLUTION_FOLDERS=OFF \
	-DINSTALL_CREATE_DISTRIB=OFF

	# OpenCV module selection
	# * Modules on:
	# - core: if not set, opencv does not build anything
	# - hal: core's dependency
	# * Modules off:
	# - android*: android stuff
	# - apps: programs for training classifiers
	# - java: java bindings
	# - viz: missing VTK dependency
	# - world: all-in-one module
	#
	# * Contrib modules from [1] are disabled:
	# - opencv_contrib package is not available in Buildroot;
	# - OPENCV3_EXTRA_MODULES_PATH is not set.
	#
	# [1] https://github.com/Itseez/opencv_contrib
	OPENCV3_CONF_OPTS += \
	-DBUILD_opencv_androidcamera=OFF \
	-DBUILD_opencv_apps=OFF \
	-DBUILD_opencv_calib3d=$(if $(BR2_PACKAGE_OPENCV3_LIB_CALIB3D),ON,OFF) \
	-DBUILD_opencv_core=ON \
	-DBUILD_opencv_features2d=$(if $(BR2_PACKAGE_OPENCV3_LIB_FEATURES2D),ON,OFF) \
	-DBUILD_opencv_flann=$(if $(BR2_PACKAGE_OPENCV3_LIB_FLANN),ON,OFF) \
	-DBUILD_opencv_highgui=$(if $(BR2_PACKAGE_OPENCV3_LIB_HIGHGUI),ON,OFF) \
	-DBUILD_opencv_imgcodecs=$(if $(BR2_PACKAGE_OPENCV3_LIB_IMGCODECS),ON,OFF) \
	-DBUILD_opencv_imgproc=$(if $(BR2_PACKAGE_OPENCV3_LIB_IMGPROC),ON,OFF) \
	-DBUILD_opencv_java=OFF \
	-DBUILD_opencv_ml=$(if $(BR2_PACKAGE_OPENCV3_LIB_ML),ON,OFF) \
	-DBUILD_opencv_objdetect=$(if $(BR2_PACKAGE_OPENCV3_LIB_OBJDETECT),ON,OFF) \
	-DBUILD_opencv_photo=$(if $(BR2_PACKAGE_OPENCV3_LIB_PHOTO),ON,OFF) \
	-DBUILD_opencv_shape=$(if $(BR2_PACKAGE_OPENCV3_LIB_SHAPE),ON,OFF) \
	-DBUILD_opencv_stitching=$(if $(BR2_PACKAGE_OPENCV3_LIB_STITCHING),ON,OFF) \
	-DBUILD_opencv_superres=$(if $(BR2_PACKAGE_OPENCV3_LIB_SUPERRES),ON,OFF) \
	-DBUILD_opencv_ts=$(if $(BR2_PACKAGE_OPENCV3_LIB_TS),ON,OFF) \
	-DBUILD_opencv_video=$(if $(BR2_PACKAGE_OPENCV3_LIB_VIDEO),ON,OFF) \
	-DBUILD_opencv_videoio=$(if $(BR2_PACKAGE_OPENCV3_LIB_VIDEOIO),ON,OFF) \
	-DBUILD_opencv_videostab=$(if $(BR2_PACKAGE_OPENCV3_LIB_VIDEOSTAB),ON,OFF) \
	-DBUILD_opencv_viz=OFF \
	-DBUILD_opencv_world=OFF

	# Hardware support options.
	#
	# * PowerPC and VFPv3 support are turned off since their only effects
	# are altering CFLAGS, adding '-mcpu=G3 -mtune=G5' or '-mfpu=vfpv3'
	# to them, which is already handled by Buildroot.
	# * NEON logic is needed as it is not only used to add CFLAGS, but
	# also to enable additional NEON code.
	OPENCV3_CONF_OPTS += \
	-DENABLE_POWERPC=OFF \
	-DENABLE_NEON=$(if $(BR2_ARM_CPU_HAS_NEON),ON,OFF) \
	-DENABLE_VFPV3=OFF

	# Cuda stuff
	OPENCV3_CONF_OPTS += \
	-DBUILD_CUDA_STUBS=OFF \
	-DBUILD_opencv_cudaarithm=OFF \
	-DBUILD_opencv_cudabgsegm=OFF \
	-DBUILD_opencv_cudacodec=OFF \
	-DBUILD_opencv_cudafeatures2d=OFF \
	-DBUILD_opencv_cudafilters=OFF \
	-DBUILD_opencv_cudaimgproc=OFF \
	-DBUILD_opencv_cudalegacy=OFF \
	-DBUILD_opencv_cudaobjdetect=OFF \
	-DBUILD_opencv_cudaoptflow=OFF \
	-DBUILD_opencv_cudastereo=OFF \
	-DBUILD_opencv_cudawarping=OFF \
	-DBUILD_opencv_cudev=OFF \
	-DWITH_CUBLAS=OFF \
	-DWITH_CUDA=OFF \
	-DWITH_CUFFT=OFF

	# NVidia stuff
	OPENCV3_CONF_OPTS += -DWITH_NVCUVID=OFF

	# AMD stuff
	OPENCV3_CONF_OPTS += \
	-DWITH_OPENCLAMDBLAS=OFF \
	-DWITH_OPENCLAMDFFT=OFF

	# Intel stuff
	OPENCV3_CONF_OPTS += \
	-DBUILD_WITH_DYNAMIC_IPP=OFF \
	-DWITH_INTELPERC=OFF \
	-DWITH_IPP=OFF \
	-DWITH_IPP_A=OFF \
	-DWITH_TBB=OFF

	# Smartek stuff
	OPENCV3_CONF_OPTS += -DWITH_GIGEAPI=OFF

	# Prosilica stuff
	OPENCV3_CONF_OPTS += -DWITH_PVAPI=OFF

	# Ximea stuff
	OPENCV3_CONF_OPTS += -DWITH_XIMEA=OFF

	# Non-Linux support (Android options) must remain OFF:
	OPENCV3_CONF_OPTS += \
	-DANDROID=OFF \
	-DBUILD_ANDROID_CAMERA_WRAPPER=OFF \
	-DBUILD_ANDROID_EXAMPLES=OFF \
	-DBUILD_ANDROID_SERVICE=OFF \
	-DBUILD_FAT_JAVA_LIB=OFF \
	-DINSTALL_ANDROID_EXAMPLES=OFF \
	-DWITH_ANDROID_CAMERA=OFF

	# Non-Linux support (Mac OSX options) must remain OFF:
	OPENCV3_CONF_OPTS += \
	-DWITH_AVFOUNDATION=OFF \
	-DWITH_CARBON=OFF \
	-DWITH_QUICKTIME=OFF

	# Non-Linux support (Windows options) must remain OFF:
	OPENCV3_CONF_OPTS += \
	-DWITH_CSTRIPES=OFF \
	-DWITH_DSHOW=OFF \
	-DWITH_MSMF=OFF \
	-DWITH_VFW=OFF \
	-DWITH_VIDEOINPUT=OFF \
	-DWITH_WIN32UI=OFF

	# Software/3rd-party support options:
	# - disable all examples
	OPENCV3_CONF_OPTS += \
	-DBUILD_EXAMPLES=OFF \
	-DBUILD_JASPER=OFF \
	-DBUILD_JPEG=OFF \
	-DBUILD_OPENEXR=OFF \
	-DBUILD_PNG=OFF \
	-DBUILD_PROTOBUF=OFF \
	-DBUILD_TIFF=OFF \
	-DBUILD_ZLIB=OFF \
	-DINSTALL_C_EXAMPLES=OFF \
	-DINSTALL_PYTHON_EXAMPLES=OFF \
	-DINSTALL_TO_MANGLED_PATHS=OFF

	# Disabled features (mostly because they are not available in Buildroot), but
	# - eigen: OpenCV does not use it, not take any benefit from it.
	OPENCV3_CONF_OPTS += \
	-DWITH_1394=OFF \
	-DWITH_CLP=OFF \
	-DWITH_EIGEN=OFF \
	-DWITH_GDAL=OFF \
	-DWITH_GPHOTO2=OFF \
	-DWITH_GSTREAMER_0_10=OFF \
	-DWITH_LAPACK=OFF \
	-DWITH_MATLAB=OFF \
	-DWITH_OPENCL=OFF \
	-DWITH_OPENCL_SVM=OFF \
	-DWITH_OPENEXR=OFF \
	-DWITH_OPENNI2=OFF \
	-DWITH_OPENNI=OFF \
	-DWITH_UNICAP=OFF \
	-DWITH_VA=OFF \
	-DWITH_VA_INTEL=OFF \
	-DWITH_VTK=OFF \
	-DWITH_XINE=OFF

	OPENCV3_DEPENDENCIES += host-pkgconf zlib

	ifeq ($(BR2_PACKAGE_OPENCV3_WITH_FFMPEG),y)
	OPENCV3_CONF_OPTS += -DWITH_FFMPEG=ON
	OPENCV3_DEPENDENCIES += ffmpeg bzip2
	else
	OPENCV3_CONF_OPTS += -DWITH_FFMPEG=OFF
	endif

	ifeq ($(BR2_PACKAGE_OPENCV3_WITH_GSTREAMER1),y)
	OPENCV3_CONF_OPTS += -DWITH_GSTREAMER=ON
	OPENCV3_DEPENDENCIES += gstreamer1 gst1-plugins-base
	else
	OPENCV3_CONF_OPTS += -DWITH_GSTREAMER=OFF
	endif

	ifeq ($(BR2_PACKAGE_OPENCV3_WITH_GTK)$(BR2_PACKAGE_OPENCV3_WITH_GTK3),)
	OPENCV3_CONF_OPTS += -DWITH_GTK=OFF -DWITH_GTK_2_X=OFF
	endif

	ifeq ($(BR2_PACKAGE_OPENCV3_WITH_GTK),y)
	OPENCV3_CONF_OPTS += -DWITH_GTK=ON -DWITH_GTK_2_X=ON
	OPENCV3_DEPENDENCIES += libgtk2
	endif

	ifeq ($(BR2_PACKAGE_OPENCV3_WITH_GTK3),y)
	OPENCV3_CONF_OPTS += -DWITH_GTK=ON -DWITH_GTK_2_X=OFF
	OPENCV3_DEPENDENCIES += libgtk3
	endif

	ifeq ($(BR2_PACKAGE_OPENCV3_WITH_JASPER),y)
	OPENCV3_CONF_OPTS += -DWITH_JASPER=ON
	OPENCV3_DEPENDENCIES += jasper
	else
	OPENCV3_CONF_OPTS += -DWITH_JASPER=OFF
	endif

	ifeq ($(BR2_PACKAGE_OPENCV3_WITH_JPEG),y)
	OPENCV3_CONF_OPTS += -DWITH_JPEG=ON
	OPENCV3_DEPENDENCIES += jpeg
	else
	OPENCV3_CONF_OPTS += -DWITH_JPEG=OFF
	endif

	ifeq ($(BR2_PACKAGE_OPENCV3_WITH_OPENGL),y)
	OPENCV3_CONF_OPTS += -DWITH_OPENGL=ON
	OPENCV3_DEPENDENCIES += libgl
	else
	OPENCV3_CONF_OPTS += -DWITH_OPENGL=OFF
	endif

	OPENCV3_CONF_OPTS += -DWITH_OPENMP=$(if $(BR2_TOOLCHAIN_HAS_OPENMP),ON,OFF)

	ifeq ($(BR2_PACKAGE_OPENCV3_WITH_PNG),y)
	OPENCV3_CONF_OPTS += -DWITH_PNG=ON
	OPENCV3_DEPENDENCIES += libpng
	else
	OPENCV3_CONF_OPTS += -DWITH_PNG=OFF
	endif

	ifeq ($(BR2_PACKAGE_OPENCV3_WITH_PROTOBUF),y)
	OPENCV3_CONF_OPTS += \
	-DPROTOBUF_UPDATE_FILES=ON \
	-DWITH_PROTOBUF=ON
	OPENCV3_DEPENDENCIES += protobuf
	else
	OPENCV3_CONF_OPTS += -DWITH_PROTOBUF=OFF
	endif

	ifeq ($(BR2_PACKAGE_OPENCV3_WITH_QT5),y)
	OPENCV3_CONF_OPTS += -DWITH_QT=5
	OPENCV3_DEPENDENCIES += qt5base
	else
	OPENCV3_CONF_OPTS += -DWITH_QT=OFF
	endif

	ifeq ($(BR2_PACKAGE_OPENCV3_WITH_TIFF),y)
	OPENCV3_CONF_OPTS += -DWITH_TIFF=ON
	OPENCV3_DEPENDENCIES += tiff
	else
	OPENCV3_CONF_OPTS += -DWITH_TIFF=OFF
	endif

	ifeq ($(BR2_PACKAGE_OPENCV3_WITH_V4L),y)
	OPENCV3_CONF_OPTS += \
	-DWITH_LIBV4L=$(if $(BR2_PACKAGE_LIBV4L),ON,OFF) \
	-DWITH_V4L=ON
	OPENCV3_DEPENDENCIES += $(if $(BR2_PACKAGE_LIBV4L),libv4l)
	else
	OPENCV3_CONF_OPTS += -DWITH_V4L=OFF -DWITH_LIBV4L=OFF
	endif

	ifeq ($(BR2_PACKAGE_OPENCV3_WITH_WEBP),y)
	OPENCV3_CONF_OPTS += -DWITH_WEBP=ON
	OPENCV3_DEPENDENCIES += webp
	else
	OPENCV3_CONF_OPTS += -DWITH_WEBP=OFF
	endif

	ifeq ($(BR2_PACKAGE_OPENCV3_LIB_PYTHON),y)
	OPENCV3_CONF_OPTS += \
	-DBUILD_opencv_python2=OFF \
	-DBUILD_opencv_python3=ON \
	-DPYTHON3_EXECUTABLE=$(HOST_DIR)/bin/python3 \
	-DPYTHON3_INCLUDE_PATH=$(STAGING_DIR)/usr/include/python$(PYTHON3_VERSION_MAJOR) \
	-DPYTHON3_LIBRARIES=$(STAGING_DIR)/usr/lib/libpython$(PYTHON3_VERSION_MAJOR).so \
	-DPYTHON3_NUMPY_INCLUDE_DIRS=$(STAGING_DIR)/usr/lib/python$(PYTHON3_VERSION_MAJOR)/site-packages/numpy/core/include \
	-DPYTHON3_PACKAGES_PATH=/usr/lib/python$(PYTHON3_VERSION_MAJOR)/site-packages \
	-DPYTHON3_NUMPY_VERSION=$(PYTHON_NUMPY_VERSION)
	OPENCV3_DEPENDENCIES += python3
	OPENCV3_KEEP_PY_FILES += usr/lib/python$(PYTHON3_VERSION_MAJOR)/site-packages/cv2/config*.py
	OPENCV3_CONF_ENV += $(PKG_PYTHON_DISTUTILS_ENV)
	OPENCV3_DEPENDENCIES += python-numpy
	else
	OPENCV3_CONF_OPTS += \
	-DBUILD_opencv_python2=OFF \
	-DBUILD_opencv_python3=OFF
	endif

	# Installation hooks:
	define OPENCV3_CLEAN_INSTALL_LICENSE
	$(RM) -fr $(TARGET_DIR)/usr/share/licenses/opencv3
	endef
	OPENCV3_POST_INSTALL_TARGET_HOOKS += OPENCV3_CLEAN_INSTALL_LICENSE

	define OPENCV3_CLEAN_INSTALL_CMAKE
	$(RM) -f $(TARGET_DIR)/usr/share/OpenCV/OpenCV*.cmake
	endef
	OPENCV3_POST_INSTALL_TARGET_HOOKS += OPENCV3_CLEAN_INSTALL_CMAKE

	define OPENCV3_CLEAN_INSTALL_VALGRIND
	$(RM) -f $(TARGET_DIR)/usr/share/OpenCV/valgrind*
	endef
	OPENCV3_POST_INSTALL_TARGET_HOOKS += OPENCV3_CLEAN_INSTALL_VALGRIND

	ifneq ($(BR2_PACKAGE_OPENCV3_INSTALL_DATA),y)
	define OPENCV3_CLEAN_INSTALL_DATA
	$(RM) -fr $(TARGET_DIR)/usr/share/OpenCV/haarcascades \
	$(TARGET_DIR)/usr/share/OpenCV/lbpcascades
	endef
	OPENCV3_POST_INSTALL_TARGET_HOOKS += OPENCV3_CLEAN_INSTALL_DATA
	endif

	$(eval $(cmake-package))