################################################################################
  #
  # opencv
  #
  ################################################################################
  
  OPENCV_VERSION = 2.4.13
  OPENCV_SITE = $(call github,itseez,opencv,$(OPENCV_VERSION))
  OPENCV_INSTALL_STAGING = YES
  OPENCV_LICENSE = BSD-3c
  OPENCV_LICENSE_FILES = LICENSE
  
  # OpenCV component options
  OPENCV_CONF_OPTS += \
  	-DBUILD_PERF_TESTS=$(if $(BR2_PACKAGE_OPENCV_BUILD_PERF_TESTS),ON,OFF) \
  	-DBUILD_TESTS=$(if $(BR2_PACKAGE_OPENCV_BUILD_TESTS),ON,OFF) \
  	-DBUILD_WITH_DEBUG_INFO=OFF
  
  # OpenCV build options
  OPENCV_CONF_OPTS += \
  	-DBUILD_WITH_STATIC_CRT=OFF \
  	-DENABLE_FAST_MATH=ON \
  	-DENABLE_NOISY_WARNINGS=OFF \
  	-DENABLE_OMIT_FRAME_POINTER=ON \
  	-DENABLE_PRECOMPILED_HEADERS=OFF \
  	-DENABLE_PROFILING=OFF \
  	-DOPENCV_CAN_BREAK_BINARY_COMPATIBILITY=ON
  
  # OpenCV link options
  OPENCV_CONF_OPTS += \
  	-DCMAKE_INSTALL_RPATH_USE_LINK_PATH=OFF \
  	-DCMAKE_SKIP_RPATH=OFF \
  	-DCMAKE_USE_RELATIVE_PATHS=OFF
  
  # OpenCV packaging options:
  OPENCV_CONF_OPTS += \
  	-DBUILD_PACKAGE=OFF \
  	-DENABLE_SOLUTION_FOLDERS=OFF \
  	-DINSTALL_CREATE_DISTRIB=OFF
  
  # OpenCV module selection
  OPENCV_CONF_OPTS += \
  	-DBUILD_opencv_androidcamera=OFF \
  	-DBUILD_opencv_apps=OFF \
  	-DBUILD_opencv_calib3d=$(if $(BR2_PACKAGE_OPENCV_LIB_CALIB3D),ON,OFF) \
  	-DBUILD_opencv_contrib=$(if $(BR2_PACKAGE_OPENCV_LIB_CONTRIB),ON,OFF) \
  	-DBUILD_opencv_core=ON \
  	-DBUILD_opencv_dynamicuda=OFF \
  	-DBUILD_opencv_features2d=$(if $(BR2_PACKAGE_OPENCV_LIB_FEATURES2D),ON,OFF) \
  	-DBUILD_opencv_flann=$(if $(BR2_PACKAGE_OPENCV_LIB_FLANN),ON,OFF) \
  	-DBUILD_opencv_gpu=$(if $(BR2_PACKAGE_OPENCV_LIB_GPU),ON,OFF) \
  	-DBUILD_opencv_highgui=$(if $(BR2_PACKAGE_OPENCV_LIB_HIGHGUI),ON,OFF) \
  	-DBUILD_opencv_imgproc=$(if $(BR2_PACKAGE_OPENCV_LIB_IMGPROC),ON,OFF) \
  	-DBUILD_opencv_java=OFF \
  	-DBUILD_opencv_legacy=$(if $(BR2_PACKAGE_OPENCV_LIB_LEGACY),ON,OFF) \
  	-DBUILD_opencv_ml=$(if $(BR2_PACKAGE_OPENCV_LIB_ML),ON,OFF) \
  	-DBUILD_opencv_nonfree=$(if $(BR2_PACKAGE_OPENCV_LIB_NONFREE),ON,OFF) \
  	-DBUILD_opencv_objdetect=$(if $(BR2_PACKAGE_OPENCV_LIB_OBJDETECT),ON,OFF) \
  	-DBUILD_opencv_ocl=OFF \
  	-DBUILD_opencv_photo=$(if $(BR2_PACKAGE_OPENCV_LIB_PHOTO),ON,OFF) \
  	-DBUILD_opencv_python=OFF \
  	-DBUILD_opencv_stitching=$(if $(BR2_PACKAGE_OPENCV_LIB_STITCHING),ON,OFF) \
  	-DBUILD_opencv_superres=$(if $(BR2_PACKAGE_OPENCV_LIB_SUPERRES),ON,OFF) \
  	-DBUILD_opencv_ts=$(if $(BR2_PACKAGE_OPENCV_LIB_TS),ON,OFF) \
  	-DBUILD_opencv_video=$(if $(BR2_PACKAGE_OPENCV_LIB_VIDEO),ON,OFF) \
  	-DBUILD_opencv_videostab=$(if $(BR2_PACKAGE_OPENCV_LIB_VIDEOSTAB),ON,OFF) \
  	-DBUILD_opencv_world=OFF
  
  # Hardware support options.
  #
  # * PowerPC support is turned off since its only effect is altering CFLAGS,
  #   adding '-mcpu=G3 -mtune=G5' to them, which is already handled by Buildroot.
  OPENCV_CONF_OPTS += \
  	-DENABLE_AVX=$(if $(BR2_X86_CPU_HAS_AVX),ON,OFF) \
  	-DENABLE_AVX2=$(if $(BR2_X86_CPU_HAS_AVX2),ON,OFF) \
  	-DENABLE_POWERPC=OFF \
  	-DENABLE_SSE=$(if $(BR2_X86_CPU_HAS_SSE),ON,OFF) \
  	-DENABLE_SSE2=$(if $(BR2_X86_CPU_HAS_SSE2),ON,OFF) \
  	-DENABLE_SSE3=$(if $(BR2_X86_CPU_HAS_SSE3),ON,OFF) \
  	-DENABLE_SSE41=$(if $(BR2_X86_CPU_HAS_SSE4),ON,OFF) \
  	-DENABLE_SSE42=$(if $(BR2_X86_CPU_HAS_SSE42),ON,OFF) \
  	-DENABLE_SSSE3=$(if $(BR2_X86_CPU_HAS_SSSE3),ON,OFF)
  
  # Cuda stuff
  OPENCV_CONF_OPTS += \
  	-DWITH_CUBLAS=OFF \
  	-DWITH_CUDA=OFF \
  	-DWITH_CUFFT=OFF
  
  # NVidia stuff
  OPENCV_CONF_OPTS += -DWITH_NVCUVID=OFF
  
  # AMD stuff
  OPENCV_CONF_OPTS += \
  	-DWITH_OPENCLAMDBLAS=OFF \
  	-DWITH_OPENCLAMDFFT=OFF
  
  # Intel stuff
  OPENCV_CONF_OPTS += \
  	-DWITH_INTELPERC=OFF \
  	-DWITH_IPP=OFF \
  	-DWITH_TBB=OFF
  
  # Smartek stuff
  OPENCV_CONF_OPTS += -DWITH_GIGEAPI=OFF
  
  # Prosilica stuff
  OPENCV_CONF_OPTS += -DWITH_PVAPI=OFF
  
  # Ximea stuff
  OPENCV_CONF_OPTS += -DWITH_XIMEA=OFF
  
  # Non-Linux support (Android options) must remain OFF:
  OPENCV_CONF_OPTS += \
  	-DBUILD_ANDROID_CAMERA_WRAPPER=OFF \
  	-DBUILD_ANDROID_EXAMPLES=OFF \
  	-DBUILD_FAT_JAVA_LIB=OFF \
  	-DBUILD_JAVA_SUPPORT=OFF \
  	-DINSTALL_ANDROID_EXAMPLES=OFF \
  	-DWITH_ANDROID_CAMERA=OFF
  
  # Non-Linux support (Mac OSX options) must remain OFF:
  OPENCV_CONF_OPTS += \
  	-DWITH_AVFOUNDATION=OFF \
  	-DWITH_CARBON=OFF \
  	-DWITH_QUICKTIME=OFF
  
  # Non-Linux support (Windows options) must remain OFF:
  OPENCV_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.
  OPENCV_CONF_OPTS += \
  	-DBUILD_JASPER=OFF \
  	-DBUILD_JPEG=OFF \
  	-DBUILD_NEW_PYTHON_SUPPORT=OFF \
  	-DBUILD_OPENEXR=OFF \
  	-DBUILD_PNG=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.
  OPENCV_CONF_OPTS += \
  	-DWITH_1394=OFF \
  	-DWITH_EIGEN=OFF \
  	-DWITH_IMAGEIO=OFF \
  	-DWITH_OPENCL=OFF \
  	-DWITH_OPENEXR=OFF \
  	-DWITH_OPENGL=OFF \
  	-DWITH_OPENMP=OFF \
  	-DWITH_OPENNI=OFF \
  	-DWITH_UNICAP=OFF \
  	-DWITH_XINE=OFF
  
  OPENCV_DEPENDENCIES += zlib
  
  ifeq ($(BR2_PACKAGE_OPENCV_WITH_FFMPEG),y)
  OPENCV_CONF_OPTS += -DWITH_FFMPEG=ON
  OPENCV_DEPENDENCIES += ffmpeg bzip2
  else
  OPENCV_CONF_OPTS += -DWITH_FFMPEG=OFF
  endif
  
  ifeq ($(BR2_PACKAGE_OPENCV_WITH_GSTREAMER),y)
  OPENCV_CONF_OPTS += -DWITH_GSTREAMER_0_10=ON
  OPENCV_DEPENDENCIES += gstreamer gst-plugins-base
  else
  OPENCV_CONF_OPTS += -DWITH_GSTREAMER_0_10=OFF
  endif
  
  ifeq ($(BR2_PACKAGE_OPENCV_WITH_GSTREAMER1),y)
  OPENCV_CONF_OPTS += -DWITH_GSTREAMER=ON
  OPENCV_DEPENDENCIES += gstreamer1 gst1-plugins-base
  else
  OPENCV_CONF_OPTS += -DWITH_GSTREAMER=OFF
  endif
  
  ifeq ($(BR2_PACKAGE_OPENCV_WITH_GTK),y)
  OPENCV_CONF_OPTS += -DWITH_GTK=ON
  OPENCV_DEPENDENCIES += libgtk2
  else
  OPENCV_CONF_OPTS += -DWITH_GTK=OFF
  endif
  
  ifeq ($(BR2_PACKAGE_OPENCV_WITH_JASPER),y)
  OPENCV_CONF_OPTS += -DWITH_JASPER=ON
  OPENCV_DEPENDENCIES += jasper
  else
  OPENCV_CONF_OPTS += -DWITH_JASPER=OFF
  endif
  
  ifeq ($(BR2_PACKAGE_OPENCV_WITH_JPEG),y)
  OPENCV_CONF_OPTS += -DWITH_JPEG=ON
  OPENCV_DEPENDENCIES += jpeg
  else
  OPENCV_CONF_OPTS += -DWITH_JPEG=OFF
  endif
  
  ifeq ($(BR2_PACKAGE_OPENCV_WITH_PNG),y)
  OPENCV_CONF_OPTS += -DWITH_PNG=ON
  OPENCV_DEPENDENCIES += libpng
  else
  OPENCV_CONF_OPTS += -DWITH_PNG=OFF
  endif
  
  ifeq ($(BR2_PACKAGE_OPENCV_WITH_QT),y)
  OPENCV_CONF_OPTS += -DWITH_QT=4
  OPENCV_DEPENDENCIES += qt
  else
  OPENCV_CONF_OPTS += -DWITH_QT=OFF
  endif
  
  ifeq ($(BR2_PACKAGE_OPENCV_WITH_TIFF),y)
  OPENCV_CONF_OPTS += -DWITH_TIFF=ON
  OPENCV_DEPENDENCIES += tiff
  else
  OPENCV_CONF_OPTS += -DWITH_TIFF=OFF
  endif
  
  ifeq ($(BR2_PACKAGE_OPENCV_WITH_V4L),y)
  OPENCV_CONF_OPTS += \
  	-DWITH_LIBV4L=$(if $(BR2_PACKAGE_LIBV4L),ON,OFF) \
  	-DWITH_V4L=ON
  OPENCV_DEPENDENCIES += $(if $(BR2_PACKAGE_LIBV4L),libv4l)
  else
  OPENCV_CONF_OPTS += -DWITH_V4L=OFF -DWITH_LIBV4L=OFF
  endif
  
  # Installation hooks:
  define OPENCV_CLEAN_INSTALL_DOC
  	$(RM) -fr $(TARGET_DIR)/usr/share/OpenCV/doc
  endef
  OPENCV_POST_INSTALL_TARGET_HOOKS += OPENCV_CLEAN_INSTALL_DOC
  
  define OPENCV_CLEAN_INSTALL_CMAKE
  	$(RM) -f $(TARGET_DIR)/usr/share/OpenCV/OpenCVConfig*.cmake
  endef
  OPENCV_POST_INSTALL_TARGET_HOOKS += OPENCV_CLEAN_INSTALL_CMAKE
  
  ifneq ($(BR2_PACKAGE_OPENCV_INSTALL_DATA),y)
  define OPENCV_CLEAN_INSTALL_DATA
  	$(RM) -fr $(TARGET_DIR)/usr/share/OpenCV/haarcascades \
  		$(TARGET_DIR)/usr/share/OpenCV/lbpcascades
  endef
  OPENCV_POST_INSTALL_TARGET_HOOKS += OPENCV_CLEAN_INSTALL_DATA
  endif
  
  $(eval $(cmake-package))