Open Source Computer Vision Library https://opencv.org/
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# ----------------------------------------------------------------------------
# Detect 3rd-party image IO libraries
# ----------------------------------------------------------------------------
# --- zlib (required) ---
if(WITH_ZLIB_NG)
ocv_clear_vars(ZLIB_LIBRARY ZLIB_LIBRARIES ZLIB_INCLUDE_DIR)
set(ZLIB_LIBRARY zlib CACHE INTERNAL "")
add_subdirectory("${OpenCV_SOURCE_DIR}/3rdparty/zlib-ng")
set(ZLIB_INCLUDE_DIR "${${ZLIB_LIBRARY}_BINARY_DIR}" CACHE INTERNAL "")
set(ZLIB_INCLUDE_DIRS ${ZLIB_INCLUDE_DIR})
set(ZLIB_LIBRARIES ${ZLIB_LIBRARY})
ocv_parse_header_version(ZLIB "${${ZLIB_LIBRARY}_SOURCE_DIR}/zlib.h.in" ZLIB_VERSION)
ocv_parse_header_version(ZLIBNG "${${ZLIB_LIBRARY}_SOURCE_DIR}/zlib.h.in" ZLIBNG_VERSION)
set(HAVE_ZLIB_NG YES)
else()
if(BUILD_ZLIB)
ocv_clear_vars(ZLIB_FOUND)
else()
ocv_clear_internal_cache_vars(ZLIB_LIBRARY ZLIB_INCLUDE_DIR)
if(ANDROID)
set(_zlib_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES})
set(CMAKE_FIND_LIBRARY_SUFFIXES .so)
endif()
if(QNX)
set(ZLIB_FOUND TRUE)
set(ZLIB_LIBRARY z)
set(ZLIB_LIBRARIES z)
else()
find_package(ZLIB "${MIN_VER_ZLIB}")
endif()
if(ANDROID)
set(CMAKE_FIND_LIBRARY_SUFFIXES ${_zlib_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES})
unset(_zlib_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES)
endif()
if(ZLIB_FOUND AND ANDROID)
if(ZLIB_LIBRARY MATCHES "/usr/lib.*/libz.so$")
set(ZLIB_LIBRARY z)
set(ZLIB_LIBRARIES z)
set(ZLIB_LIBRARY_RELEASE z)
endif()
endif()
endif()
if(NOT ZLIB_FOUND)
ocv_clear_vars(ZLIB_LIBRARY ZLIB_LIBRARIES ZLIB_INCLUDE_DIR)
set(ZLIB_LIBRARY zlib CACHE INTERNAL "")
add_subdirectory("${OpenCV_SOURCE_DIR}/3rdparty/zlib")
set(ZLIB_INCLUDE_DIR "${${ZLIB_LIBRARY}_SOURCE_DIR}" "${${ZLIB_LIBRARY}_BINARY_DIR}" CACHE INTERNAL "")
set(ZLIB_INCLUDE_DIRS ${ZLIB_INCLUDE_DIR})
set(ZLIB_LIBRARIES ${ZLIB_LIBRARY})
ocv_parse_header_version(ZLIB "${${ZLIB_LIBRARY}_SOURCE_DIR}/zlib.h" ZLIB_VERSION)
endif()
endif()
# --- libavif (optional) ---
if(WITH_AVIF)
ocv_clear_internal_cache_vars(AVIF_LIBRARY AVIF_INCLUDE_DIR)
include(cmake/OpenCVFindAVIF.cmake)
if(AVIF_FOUND)
set(HAVE_AVIF 1)
endif()
endif()
# --- libjpeg (optional) ---
if(WITH_JPEG)
if(BUILD_JPEG)
ocv_clear_vars(JPEG_FOUND)
else()
ocv_clear_internal_cache_vars(JPEG_LIBRARY JPEG_INCLUDE_DIR)
if(QNX)
set(JPEG_LIBRARY jpeg)
set(JPEG_LIBRARIES jpeg)
set(JPEG_FOUND TRUE)
else()
include(FindJPEG)
endif()
endif()
if(NOT JPEG_FOUND)
ocv_clear_vars(JPEG_LIBRARY JPEG_INCLUDE_DIR)
if(NOT BUILD_JPEG_TURBO_DISABLE)
set(JPEG_LIBRARY libjpeg-turbo CACHE INTERNAL "")
set(JPEG_LIBRARIES ${JPEG_LIBRARY})
add_subdirectory("${OpenCV_SOURCE_DIR}/3rdparty/libjpeg-turbo")
set(JPEG_INCLUDE_DIR "${${JPEG_LIBRARY}_SOURCE_DIR}/src" CACHE INTERNAL "")
else()
set(JPEG_LIBRARY libjpeg CACHE INTERNAL "")
set(JPEG_LIBRARIES ${JPEG_LIBRARY})
add_subdirectory("${OpenCV_SOURCE_DIR}/3rdparty/libjpeg")
set(JPEG_INCLUDE_DIR "${${JPEG_LIBRARY}_SOURCE_DIR}" CACHE INTERNAL "")
endif()
set(JPEG_INCLUDE_DIRS "${JPEG_INCLUDE_DIR}")
endif()
macro(ocv_detect_jpeg_version header_file)
if(NOT DEFINED JPEG_LIB_VERSION AND EXISTS "${header_file}")
ocv_parse_header("${header_file}" JPEG_VERSION_LINES JPEG_LIB_VERSION)
endif()
endmacro()
ocv_detect_jpeg_version("${JPEG_INCLUDE_DIR}/jpeglib.h")
if(DEFINED CMAKE_CXX_LIBRARY_ARCHITECTURE)
ocv_detect_jpeg_version("${JPEG_INCLUDE_DIR}/${CMAKE_CXX_LIBRARY_ARCHITECTURE}/jconfig.h")
endif()
# no needed for strict platform check here, both files 64/32 should contain the same version
ocv_detect_jpeg_version("${JPEG_INCLUDE_DIR}/jconfig-64.h")
ocv_detect_jpeg_version("${JPEG_INCLUDE_DIR}/jconfig-32.h")
ocv_detect_jpeg_version("${JPEG_INCLUDE_DIR}/jconfig.h")
ocv_detect_jpeg_version("${${JPEG_LIBRARY}_BINARY_DIR}/jconfig.h")
if(NOT DEFINED JPEG_LIB_VERSION)
set(JPEG_LIB_VERSION "unknown")
endif()
set(HAVE_JPEG YES)
endif()
# --- libtiff (optional, should be searched after zlib and libjpeg) ---
if(WITH_TIFF)
if(BUILD_TIFF)
ocv_clear_vars(TIFF_FOUND)
else()
ocv_clear_internal_cache_vars(TIFF_LIBRARY TIFF_INCLUDE_DIR)
if(QNX)
set(TIFF_LIBRARY tiff)
set(TIFF_LIBRARIES tiff)
set(TIFF_FOUND TRUE)
else()
include(FindTIFF)
endif()
if(TIFF_FOUND)
ocv_parse_header("${TIFF_INCLUDE_DIR}/tiff.h" TIFF_VERSION_LINES TIFF_VERSION_CLASSIC TIFF_VERSION_BIG TIFF_VERSION TIFF_BIGTIFF_VERSION)
endif()
endif()
if(NOT TIFF_FOUND)
ocv_clear_vars(TIFF_LIBRARY TIFF_LIBRARIES TIFF_INCLUDE_DIR)
set(TIFF_LIBRARY libtiff CACHE INTERNAL "")
set(TIFF_LIBRARIES ${TIFF_LIBRARY})
add_subdirectory("${OpenCV_SOURCE_DIR}/3rdparty/libtiff")
set(TIFF_INCLUDE_DIR "${${TIFF_LIBRARY}_SOURCE_DIR}" "${${TIFF_LIBRARY}_BINARY_DIR}" CACHE INTERNAL "")
ocv_parse_header("${${TIFF_LIBRARY}_SOURCE_DIR}/tiff.h" TIFF_VERSION_LINES TIFF_VERSION_CLASSIC TIFF_VERSION_BIG TIFF_VERSION TIFF_BIGTIFF_VERSION)
endif()
if(TIFF_VERSION_CLASSIC AND NOT TIFF_VERSION)
set(TIFF_VERSION ${TIFF_VERSION_CLASSIC})
endif()
if(TIFF_BIGTIFF_VERSION AND NOT TIFF_VERSION_BIG)
set(TIFF_VERSION_BIG ${TIFF_BIGTIFF_VERSION})
endif()
if(NOT TIFF_VERSION_STRING AND TIFF_INCLUDE_DIR)
foreach(_TIFF_INCLUDE_DIR IN LISTS TIFF_INCLUDE_DIR)
if(EXISTS "${_TIFF_INCLUDE_DIR}/tiffvers.h")
file(STRINGS "${_TIFF_INCLUDE_DIR}/tiffvers.h" tiff_version_str REGEX "^#define[\t ]+TIFFLIB_VERSION_STR[\t ]+\"LIBTIFF, Version .*")
string(REGEX REPLACE "^#define[\t ]+TIFFLIB_VERSION_STR[\t ]+\"LIBTIFF, Version +([^ \\n]*).*" "\\1" TIFF_VERSION_STRING "${tiff_version_str}")
unset(tiff_version_str)
endif()
endforeach()
endif()
set(HAVE_TIFF YES)
endif()
# --- libwebp (optional) ---
if(WITH_WEBP)
if(BUILD_WEBP)
ocv_clear_vars(WEBP_FOUND WEBP_LIBRARY WEBP_LIBRARIES WEBP_INCLUDE_DIR)
else()
ocv_clear_internal_cache_vars(WEBP_LIBRARY WEBP_INCLUDE_DIR)
include(cmake/OpenCVFindWebP.cmake)
if(WEBP_FOUND)
set(HAVE_WEBP 1)
endif()
endif()
endif()
# --- Add libwebp to 3rdparty/libwebp and compile it if not available ---
if(WITH_WEBP AND NOT WEBP_FOUND
AND (NOT ANDROID OR HAVE_CPUFEATURES)
)
ocv_clear_vars(WEBP_LIBRARY WEBP_INCLUDE_DIR)
set(WEBP_LIBRARY libwebp CACHE INTERNAL "")
set(WEBP_LIBRARIES ${WEBP_LIBRARY})
add_subdirectory("${OpenCV_SOURCE_DIR}/3rdparty/libwebp")
set(WEBP_INCLUDE_DIR "${${WEBP_LIBRARY}_SOURCE_DIR}/src" CACHE INTERNAL "")
set(HAVE_WEBP 1)
endif()
if(NOT WEBP_VERSION AND WEBP_INCLUDE_DIR)
ocv_clear_vars(ENC_MAJ_VERSION ENC_MIN_VERSION ENC_REV_VERSION)
if(EXISTS "${WEBP_INCLUDE_DIR}/enc/vp8enci.h")
ocv_parse_header("${WEBP_INCLUDE_DIR}/enc/vp8enci.h" WEBP_VERSION_LINES ENC_MAJ_VERSION ENC_MIN_VERSION ENC_REV_VERSION)
set(WEBP_VERSION "${ENC_MAJ_VERSION}.${ENC_MIN_VERSION}.${ENC_REV_VERSION}")
elseif(EXISTS "${WEBP_INCLUDE_DIR}/webp/encode.h")
file(STRINGS "${WEBP_INCLUDE_DIR}/webp/encode.h" WEBP_ENCODER_ABI_VERSION REGEX "#define[ \t]+WEBP_ENCODER_ABI_VERSION[ \t]+([x0-9a-f]+)" )
if(WEBP_ENCODER_ABI_VERSION MATCHES "#define[ \t]+WEBP_ENCODER_ABI_VERSION[ \t]+([x0-9a-f]+)")
set(WEBP_ENCODER_ABI_VERSION "${CMAKE_MATCH_1}")
set(WEBP_VERSION "encoder: ${WEBP_ENCODER_ABI_VERSION}")
else()
unset(WEBP_ENCODER_ABI_VERSION)
endif()
endif()
endif()
# --- libopenjp2 (optional, check before libjasper) ---
if(WITH_OPENJPEG)
if(BUILD_OPENJPEG)
ocv_clear_vars(OpenJPEG_FOUND)
else()
find_package(OpenJPEG QUIET)
endif()
if(NOT OpenJPEG_FOUND OR OPENJPEG_MAJOR_VERSION LESS 2)
ocv_clear_vars(OPENJPEG_MAJOR_VERSION OPENJPEG_MINOR_VERSION OPENJPEG_BUILD_VERSION OPENJPEG_LIBRARIES OPENJPEG_INCLUDE_DIRS)
message(STATUS "Could NOT find OpenJPEG (minimal suitable version: 2.0, "
"recommended version >= 2.3.1). OpenJPEG will be built from sources")
add_subdirectory("${OpenCV_SOURCE_DIR}/3rdparty/openjpeg")
if(OCV_CAN_BUILD_OPENJPEG)
set(HAVE_OPENJPEG YES)
message(STATUS "OpenJPEG libraries will be built from sources: ${OPENJPEG_LIBRARIES} "
"(version \"${OPENJPEG_VERSION}\")")
else()
set(HAVE_OPENJPEG NO)
message(STATUS "OpenJPEG libraries can't be built from sources. System requirements are not fulfilled.")
endif()
else()
set(HAVE_OPENJPEG YES)
set(OPENJPEG_VERSION "${OPENJPEG_MAJOR_VERSION}.${OPENJPEG_MINOR_VERSION}.${OPENJPEG_BUILD_VERSION}")
message(STATUS "Found system OpenJPEG: ${OPENJPEG_LIBRARIES} "
"(found version \"${OPENJPEG_VERSION}\")")
endif()
endif()
# --- libjasper (optional, should be searched after libjpeg) ---
if(WITH_JASPER AND NOT HAVE_OPENJPEG)
if(BUILD_JASPER)
ocv_clear_vars(JASPER_FOUND)
else()
include(FindJasper)
endif()
if(NOT JASPER_FOUND)
ocv_clear_vars(JASPER_LIBRARY JASPER_LIBRARIES JASPER_INCLUDE_DIR)
set(JASPER_LIBRARY libjasper CACHE INTERNAL "")
set(JASPER_LIBRARIES ${JASPER_LIBRARY})
add_subdirectory("${OpenCV_SOURCE_DIR}/3rdparty/libjasper")
set(JASPER_INCLUDE_DIR "${${JASPER_LIBRARY}_SOURCE_DIR}" CACHE INTERNAL "")
endif()
set(HAVE_JASPER YES)
if(NOT JASPER_VERSION_STRING)
ocv_parse_header2(JASPER "${JASPER_INCLUDE_DIR}/jasper/jas_config.h" JAS_VERSION "")
endif()
endif()
if(WITH_SPNG)
if(BUILD_SPNG)
ocv_clear_vars(PNG_FOUND)
else()
# CMakeConfig bug in SPNG, include is missing there in version 0.7.4 and older
# See https://github.com/randy408/libspng/pull/264
include(CMakeFindDependencyMacro)
find_package(SPNG QUIET)
if(SPNG_FOUND)
set(SPNG_LIBRARY "spng::spng" CACHE INTERNAL "")
set(SPNG_LIBRARIES ${SPNG_LIBRARY})
else()
if(PkgConfig_FOUND)
pkg_check_modules(SPNG QUIET spng)
endif()
endif()
if(SPNG_FOUND)
set(HAVE_SPNG YES)
message(STATUS "imgcodecs: PNG codec will use SPNG, version: ${SPNG_VERSION}")
endif()
endif()
if(NOT SPNG_FOUND)
set(SPNG_LIBRARY libspng CACHE INTERNAL "")
set(SPNG_LIBRARIES ${SPNG_LIBRARY})
add_subdirectory("${OpenCV_SOURCE_DIR}/3rdparty/libspng")
set(SPNG_INCLUDE_DIR "${${SPNG_LIBRARY}_SOURCE_DIR}" CACHE INTERNAL "")
set(SPNG_DEFINITIONS "")
ocv_parse_header("${SPNG_INCLUDE_DIR}/spng.h" SPNG_VERSION_LINES SPNG_VERSION_MAJOR SPNG_VERSION_MINOR SPNG_VERSION_PATCH)
set(HAVE_SPNG YES)
set(SPNG_VERSION "${SPNG_VERSION_MAJOR}.${SPNG_VERSION_MINOR}.${SPNG_VERSION_PATCH}")
message(STATUS "imgcodecs: PNG codec will use SPNG, version: ${SPNG_VERSION} ")
endif()
endif()
# --- libpng (optional, should be searched after zlib) ---
if(NOT HAVE_SPNG AND WITH_PNG)
if(BUILD_PNG)
ocv_clear_vars(PNG_FOUND)
else()
ocv_clear_internal_cache_vars(PNG_LIBRARY PNG_INCLUDE_DIR)
find_package(PNG QUIET)
endif()
if(NOT PNG_FOUND)
ocv_clear_vars(PNG_LIBRARY PNG_LIBRARIES PNG_INCLUDE_DIR PNG_DEFINITIONS)
set(PNG_LIBRARY libpng CACHE INTERNAL "")
set(PNG_LIBRARIES ${PNG_LIBRARY})
add_subdirectory("${OpenCV_SOURCE_DIR}/3rdparty/libpng")
set(PNG_INCLUDE_DIR "${${PNG_LIBRARY}_SOURCE_DIR}" CACHE INTERNAL "")
set(PNG_DEFINITIONS "")
ocv_parse_header_version(PNG "${PNG_INCLUDE_DIR}/png.h" PNG_LIBPNG_VER_STRING)
endif()
set(HAVE_PNG YES)
endif()
# --- OpenEXR (optional) ---
if(WITH_OPENEXR)
ocv_clear_vars(HAVE_OPENEXR)
if(NOT BUILD_OPENEXR)
ocv_clear_internal_cache_vars(OPENEXR_INCLUDE_PATHS OPENEXR_LIBRARIES OPENEXR_ILMIMF_LIBRARY OPENEXR_VERSION)
include("${OpenCV_SOURCE_DIR}/cmake/OpenCVFindOpenEXR.cmake")
endif()
if(OPENEXR_FOUND)
set(HAVE_OPENEXR YES)
else()
ocv_clear_vars(OPENEXR_INCLUDE_PATHS OPENEXR_LIBRARIES OPENEXR_ILMIMF_LIBRARY OPENEXR_VERSION)
set(OPENEXR_LIBRARIES IlmImf)
add_subdirectory("${OpenCV_SOURCE_DIR}/3rdparty/openexr")
if(OPENEXR_VERSION) # check via TARGET doesn't work
set(BUILD_OPENEXR ON)
set(HAVE_OPENEXR YES)
set(BUILD_OPENEXR ON)
endif()
endif()
endif()
# --- GDAL (optional) ---
if(WITH_GDAL)
find_package(GDAL QUIET)
if(NOT GDAL_FOUND)
set(HAVE_GDAL NO)
ocv_clear_vars(GDAL_VERSION GDAL_LIBRARIES)
else()
set(HAVE_GDAL YES)
ocv_include_directories(${GDAL_INCLUDE_DIR})
endif()
endif()
if(WITH_GDCM)
find_package(GDCM QUIET)
if(NOT GDCM_FOUND)
set(HAVE_GDCM NO)
ocv_clear_vars(GDCM_VERSION GDCM_LIBRARIES)
else()
set(HAVE_GDCM YES)
# include(${GDCM_USE_FILE})
set(GDCM_LIBRARIES gdcmMSFF) # GDCM does not set this variable for some reason
endif()
endif()
if(WITH_IMGCODEC_HDR)
set(HAVE_IMGCODEC_HDR ON)
elseif(DEFINED WITH_IMGCODEC_HDR)
set(HAVE_IMGCODEC_HDR OFF)
endif()
if(WITH_IMGCODEC_SUNRASTER)
set(HAVE_IMGCODEC_SUNRASTER ON)
elseif(DEFINED WITH_IMGCODEC_SUNRASTER)
set(HAVE_IMGCODEC_SUNRASTER OFF)
endif()
if(WITH_IMGCODEC_PXM)
set(HAVE_IMGCODEC_PXM ON)
elseif(DEFINED WITH_IMGCODEC_PXM)
set(HAVE_IMGCODEC_PXM OFF)
endif()
if(WITH_IMGCODEC_PFM)
set(HAVE_IMGCODEC_PFM ON)
elseif(DEFINED WITH_IMGCODEC_PFM)
set(HAVE_IMGCODEC_PFM OFF)
endif()