# Copyright © 2020 Arm Ltd and Contributors. All rights reserved. # SPDX-License-Identifier: MIT set(OPENCV_VERSION 4.0.0) set(FFMPEG_VERSION 4.2.1) set(LIBX264_VERSION stable) set(OPENCV_LIB OpenCV${OPENCV_VERSION}) set(FFMPEG_LIB ffmpeg${FFMPEG_VERSION}) set(X264_LIB x264${LIBX264_VERSION}) set(OPENCV_NAMES libopencv_core.so.${OPENCV_VERSION} libopencv_imgproc.so.${OPENCV_VERSION} libopencv_imgcodecs.so.${OPENCV_VERSION} libopencv_videoio.so.${OPENCV_VERSION} libopencv_video.so.${OPENCV_VERSION} libopencv_highgui.so.${OPENCV_VERSION}) set(OPENCV_LIBS) set(FFMPEG_LIBS) foreach(opencv_lib ${OPENCV_NAMES}) find_library(OPENCV_${opencv_lib} NAMES ${opencv_lib} HINTS ${OPENCV_LIB_DIR} PATHS ${OPENCV_LIB_DIR} PATH_SUFFIXES "lib" "lib64") if(OPENCV_${opencv_lib}) message("Found library ${OPENCV_${opencv_lib}}") list(APPEND OPENCV_LIBS ${OPENCV_${opencv_lib}}) get_filename_component(OPENCV_LIB_DIR ${OPENCV_${opencv_lib}} DIRECTORY) get_filename_component(OPENCV_ROOT_DIR ${OPENCV_LIB_DIR} DIRECTORY) set(OPENCV_INCLUDE_DIR ${OPENCV_ROOT_DIR}/include/opencv4) endif() endforeach() if(OPENCV_LIBS) message("OpenCV libraries found") set(OPENCV_LIBS_FOUND TRUE) else() set(OPENCV_ROOT_DIR ${DEPENDENCIES_DIR}/opencv) set(OPENCV_DEPENDENCIES_ARGS) set(OPENCV_EXTRA_LINKER_ARGS) set(OPENCV_PKGCONFIG) if(CMAKE_CROSSCOMPILING) set(FFMPEG_ROOT_DIR ${DEPENDENCIES_DIR}/ffmpeg) set(LIBX264_ROOT_DIR ${DEPENDENCIES_DIR}/x264) if (CMAKE_BUILD_TYPE STREQUAL Debug) set(CONFIGURE_DEBUG --enable-debug) set(OPENCV_DEBUG "-DBUILD_WITH_DEBUG_INFO=ON") endif() ExternalProject_Add(${X264_LIB} URL "https://code.videolan.org/videolan/x264/-/archive/${LIBX264_VERSION}/x264-${LIBX264_VERSION}.tar.gz" DOWNLOAD_DIR ${LIBX264_ROOT_DIR} PREFIX ${LIBX264_ROOT_DIR} CONFIGURE_COMMAND /configure --host=${GNU_MACHINE} --enable-static --enable-shared --cross-prefix=${CROSS_PREFIX} --prefix=${CMAKE_BINARY_DIR} --extra-ldflags=-static-libstdc++ --extra-cflags=-fPIC ${CONFIGURE_DEBUG} INSTALL_DIR ${CMAKE_BINARY_DIR} BUILD_COMMAND $(MAKE) INSTALL_COMMAND $(MAKE) install ) set(FFMPEG_Config --enable-shared --enable-cross-compile --cross-prefix=${CROSS_PREFIX} --arch=${CMAKE_SYSTEM_PROCESSOR} --target-os=linux --prefix=${CMAKE_BINARY_DIR} --enable-gpl --enable-nonfree --enable-libx264 --extra-cflags=-I${CMAKE_BINARY_DIR}/include --extra-cflags=-fPIC --extra-ldflags=-L${CMAKE_BINARY_DIR}/lib --extra-libs=-ldl --extra-libs=-static-libstdc++ ) ExternalProject_Add(${FFMPEG_LIB} URL "https://github.com/FFmpeg/FFmpeg/archive/n${FFMPEG_VERSION}.tar.gz" URL_HASH MD5=05792c611d1e3ebdf2c7003ff4467390 DOWNLOAD_DIR ${FFMPEG_ROOT_DIR} PREFIX ${FFMPEG_ROOT_DIR} CONFIGURE_COMMAND /configure ${FFMPEG_Config} ${CONFIGURE_DEBUG} INSTALL_DIR ${CMAKE_BINARY_DIR} BUILD_COMMAND $(MAKE) VERBOSE=1 INSTALL_COMMAND $(MAKE) install ) set(OPENCV_DEPENDENCIES_ARGS "-static-libstdc++ -Wl,-rpath,${CMAKE_BINARY_DIR}/lib") set(OPENCV_EXTRA_LINKER_ARGS "-DOPENCV_EXTRA_EXE_LINKER_FLAGS=${OPENCV_DEPENDENCIES_ARGS}") set(OPENCV_PKGCONFIG "PKG_CONFIG_LIBDIR=${CMAKE_BINARY_DIR}/lib/pkgconfig") set(FFMPEG_NAMES libavcodec.so libavformat.so libavutil.so libswscale.so ) foreach(ffmpeg_lib ${FFMPEG_NAMES}) add_library(FFMPEG_${ffmpeg_lib} SHARED IMPORTED) set_target_properties(FFMPEG_${ffmpeg_lib} PROPERTIES IMPORTED_LOCATION ${CMAKE_BINARY_DIR}/lib/${ffmpeg_lib}) list(APPEND OPENCV_LIBS FFMPEG_${ffmpeg_lib}) endforeach() add_library(X264_lib264.so SHARED IMPORTED) set_target_properties(X264_lib264.so PROPERTIES IMPORTED_LOCATION ${CMAKE_BINARY_DIR}/lib/libx264.so) list(APPEND OPENCV_LIBS X264_lib264.so) endif() set(OPENCV_CMAKE_ARGS -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE} -DCMAKE_C_FLAGS=-fPIC -DCMAKE_CXX_FLAGS=-fPIC -DWITH_GTK=OFF -DWITH_JPEG=ON -DWITH_IPP=OFF -DBUILD_opencv_java_bindings_generator=OFF -DBUILD_opencv_ml=OFF -DBUILD_opencv_objdetect=OFF -DBUILD_opencv_photo=OFF -DBUILD_opencv_python_bindings_generator=OFF -DBUILD_opencv_stitching=OFF -DBUILD_opencv_gapi=OFF -DBUILD_opencv_features2d=OFF -DBUILD_opencv_dnn=OFF -DBUILD_opencv_flann=OFF -DBUILD_opencv_calib3d=OFF -DBUILD_opencv_python2=OFF -DBUILD_opencv_python3=OFF -DBUILD_opencv_java=OFF -DBUILD_opencv_js=OFF -DBUILD_opencv_ts=OFF -DBUILD_JPEG=ON -DBUILD_JPEG_TURBO_DISABLE=ON -DBUILD_PNG=ON -DBUILD_TIFF=ON -DZLIB_FOUND=OFF -DBUILD_ZLIB=ON -DBUILD_PERF_TESTS=OFF -DBUILD_TESTS=OFF -DBUILD_DOCS=OFF -DBUILD_opencv_apps=OFF -DBUILD_EXAMPLES=OFF -DWITH_V4L=ON -DWITH_LIBV4L=OFF -DWITH_FFMPEG=ON -DCMAKE_INSTALL_PREFIX=${CMAKE_BINARY_DIR} -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER} -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER} -DCMAKE_INSTALL_RPATH=\$ORIGIN:\$ORIGIN/lib:\$ORIGIN/../lib -DCMAKE_SHARED_LINKER_FLAGS=-static-libstdc++ ${OPENCV_DEBUG} ) ExternalProject_Add(${OPENCV_LIB} URL "https://codeload.github.com/opencv/opencv/tar.gz/${OPENCV_VERSION}" URL_HASH MD5=f051c1ff7b327b60123d71b53801b316 DOWNLOAD_DIR ${OPENCV_ROOT_DIR} PREFIX ${OPENCV_ROOT_DIR} CONFIGURE_COMMAND ${OPENCV_PKGCONFIG} ${CMAKE_COMMAND} ${OPENCV_CMAKE_ARGS} ${OPENCV_EXTRA_ARGS} ${OPENCV_EXTRA_LINKER_ARGS} ${OPENCV_ROOT_DIR}/src/${OPENCV_LIB} INSTALL_DIR ${CMAKE_BINARY_DIR} BUILD_COMMAND $(MAKE) INSTALL_COMMAND $(MAKE) install ) if(CMAKE_CROSSCOMPILING) ExternalProject_Add_StepDependencies(${FFMPEG_LIB} build ${X264_LIB}) ExternalProject_Add_StepDependencies(${OPENCV_LIB} build ${FFMPEG_LIB}) endif() set(OPENCV_INCLUDE_DIR ${CMAKE_BINARY_DIR}/include/opencv4) set(OPENCV_LIB_DIR ${CMAKE_BINARY_DIR}/lib) foreach(opencv_lib ${OPENCV_NAMES}) add_library(OPENCV_${opencv_lib} SHARED IMPORTED) set_target_properties(OPENCV_${opencv_lib} PROPERTIES IMPORTED_LOCATION ${OPENCV_LIB_DIR}/${opencv_lib}) list(APPEND OPENCV_LIBS OPENCV_${opencv_lib}) endforeach() endif()