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6e4280ea81
Supporting protobuf v22 and later(with abseil-cpp/C++17) #24372 fix https://github.com/opencv/opencv/issues/24369 related https://github.com/opencv/opencv/issues/23791 1. This patch supports external protobuf v22 and later, it required abseil-cpp and c++17. Even if the built-in protobuf is upgraded to v22 or later, the dependency on abseil-cpp and the requirement for C++17 will continue. 2. Some test for caffe required patched protobuf, so this patch disable them. This patch is tested by following libraries. - Protobuf: /usr/local/lib/libprotobuf.so (4.24.4) - abseil-cpp: YES (20230125) ### Pull Request Readiness Checklist See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request - [x] I agree to contribute to the project under Apache 2 License. - [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV - [x] The PR is proposed to the proper branch - [x] There is a reference to the original bug report and related work - [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name. - [x] The feature is well documented and sample code can be built with the project CMake
117 lines
3.8 KiB
CMake
117 lines
3.8 KiB
CMake
# If protobuf is found - libprotobuf target is available
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set(HAVE_PROTOBUF FALSE)
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if(NOT WITH_PROTOBUF)
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return()
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endif()
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ocv_option(BUILD_PROTOBUF "Force to build libprotobuf runtime from sources" ON)
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ocv_option(PROTOBUF_UPDATE_FILES "Force rebuilding .proto files (protoc should be available)" OFF)
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# BUILD_PROTOBUF=OFF: Custom manual protobuf configuration (see find_package(Protobuf) for details):
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# - Protobuf_INCLUDE_DIR
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# - Protobuf_LIBRARY
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# - Protobuf_PROTOC_EXECUTABLE
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function(get_protobuf_version version include)
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file(STRINGS "${include}/google/protobuf/stubs/common.h" ver REGEX "#define GOOGLE_PROTOBUF_VERSION [0-9]+")
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string(REGEX MATCHALL "[0-9]+" ver ${ver})
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math(EXPR major "${ver} / 1000000")
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math(EXPR minor "${ver} / 1000 % 1000")
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math(EXPR patch "${ver} % 1000")
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set(${version} "${major}.${minor}.${patch}" PARENT_SCOPE)
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endfunction()
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if(BUILD_PROTOBUF)
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ocv_assert(NOT PROTOBUF_UPDATE_FILES)
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add_subdirectory("${OpenCV_SOURCE_DIR}/3rdparty/protobuf")
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set(Protobuf_LIBRARIES "libprotobuf")
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set(HAVE_PROTOBUF TRUE)
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else()
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# we still need this for command PROTOBUF_GENERATE_CPP.
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set(protobuf_MODULE_COMPATIBLE ON)
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unset(Protobuf_VERSION CACHE)
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find_package(Protobuf QUIET CONFIG)
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if(NOT Protobuf_FOUND)
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find_package(Protobuf QUIET)
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endif()
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# Backwards compatibility
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# Define camel case versions of input variables
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foreach(UPPER
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PROTOBUF_FOUND
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PROTOBUF_LIBRARY
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PROTOBUF_INCLUDE_DIR
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PROTOBUF_VERSION
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)
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if (DEFINED ${UPPER})
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string(REPLACE "PROTOBUF_" "Protobuf_" Camel ${UPPER})
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if (NOT DEFINED ${Camel})
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set(${Camel} ${${UPPER}})
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endif()
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endif()
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endforeach()
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# end of compatibility block
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if(Protobuf_FOUND)
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if(TARGET protobuf::libprotobuf)
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set(Protobuf_LIBRARIES "protobuf::libprotobuf")
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else()
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add_library(libprotobuf UNKNOWN IMPORTED)
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set_target_properties(libprotobuf PROPERTIES
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IMPORTED_LOCATION "${Protobuf_LIBRARY}"
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INTERFACE_INCLUDE_DIRECTORIES "${Protobuf_INCLUDE_DIR}"
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INTERFACE_SYSTEM_INCLUDE_DIRECTORIES "${Protobuf_INCLUDE_DIR}"
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)
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get_protobuf_version(Protobuf_VERSION "${Protobuf_INCLUDE_DIR}")
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set(Protobuf_LIBRARIES "libprotobuf")
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endif()
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set(HAVE_PROTOBUF TRUE)
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endif()
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endif()
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# See https://github.com/opencv/opencv/issues/24369
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# In Protocol Buffers v22.0 and later drops C++11 support and depends abseil-cpp.
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# Details: https://protobuf.dev/news/2022-08-03/
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# And if std::text_view is in abseil-cpp requests C++17 and later.
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if(HAVE_PROTOBUF)
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if(NOT (Protobuf_VERSION VERSION_LESS 22))
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if((CMAKE_CXX_STANDARD EQUAL 98) OR (CMAKE_CXX_STANDARD LESS 17))
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message(STATUS "CMAKE_CXX_STANDARD=${CMAKE_CXX_STANDARD} is too old to support protobuf(${Protobuf_VERSION}) and/or abseil-cpp. Use C++17 or later. Turning HAVE_PROTOBUF off")
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set(HAVE_PROTOBUF FALSE)
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endif()
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endif()
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endif()
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if(HAVE_PROTOBUF AND PROTOBUF_UPDATE_FILES AND NOT COMMAND PROTOBUF_GENERATE_CPP)
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message(FATAL_ERROR "Can't configure protobuf dependency (BUILD_PROTOBUF=${BUILD_PROTOBUF} PROTOBUF_UPDATE_FILES=${PROTOBUF_UPDATE_FILES})")
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endif()
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if(HAVE_PROTOBUF)
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list(APPEND CUSTOM_STATUS protobuf)
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if(NOT BUILD_PROTOBUF)
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unset( __location)
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if(TARGET "${Protobuf_LIBRARIES}")
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get_target_property(__location "${Protobuf_LIBRARIES}" IMPORTED_LOCATION_RELEASE)
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if(NOT __location)
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get_target_property(__location "${Protobuf_LIBRARIES}" IMPORTED_LOCATION)
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endif()
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endif()
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if(NOT __location)
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if(Protobuf_LIBRARY)
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set(__location "${Protobuf_LIBRARY}")
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else()
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set(__location "${Protobuf_LIBRARIES}")
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endif()
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endif()
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endif()
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list(APPEND CUSTOM_STATUS_protobuf " Protobuf:"
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BUILD_PROTOBUF THEN "build (${Protobuf_VERSION})"
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ELSE "${__location} (${Protobuf_VERSION})")
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endif()
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