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Open Source Computer Vision Library
https://opencv.org/
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75 lines
2.3 KiB
75 lines
2.3 KiB
7 years ago
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# If protobuf is found - libprotobuf target is available
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ocv_option(WITH_PROTOBUF "Enable libprotobuf" ON)
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ocv_option(BUILD_PROTOBUF "Force to build libprotobuf 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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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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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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add_subdirectory("${OpenCV_SOURCE_DIR}/3rdparty/protobuf")
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set(HAVE_PROTOBUF TRUE)
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else()
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unset(Protobuf_VERSION CACHE)
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find_package(Protobuf QUIET)
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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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add_library(libprotobuf INTERFACE)
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target_link_libraries(libprotobuf INTERFACE 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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)
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get_protobuf_version(Protobuf_VERSION "${Protobuf_INCLUDE_DIR}")
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endif()
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set(HAVE_PROTOBUF TRUE)
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endif()
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endif()
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if(HAVE_PROTOBUF AND PROTOBUF_UPDATE_FILES AND NOT COMMAND PROTOBUF_GENERATE_CPP)
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find_package(Protobuf QUIET)
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if(NOT COMMAND PROTOBUF_GENERATE_CPP)
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message(FATAL_ERROR "PROTOBUF_GENERATE_CPP command is not available")
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endif()
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endif()
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if(HAVE_PROTOBUF)
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list(APPEND CUSTOM_STATUS protobuf)
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list(APPEND CUSTOM_STATUS_protobuf " Protobuf:"
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BUILD_PROTOBUF THEN "build (${Protobuf_VERSION})"
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ELSE "${Protobuf_LIBRARY} (${Protobuf_VERSION})")
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endif()
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