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Open Source Computer Vision Library
https://opencv.org/
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116 lines
3.8 KiB
116 lines
3.8 KiB
# 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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