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34 lines
1.4 KiB
CMake
34 lines
1.4 KiB
CMake
# By default, we use protobuf sources from 3rdparty subdirectory and pre-generated .proto files
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# Note: In case of .proto model updates these variables should be used:
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# - Protobuf_PROTOC_EXECUTABLE (required)
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# - Protobuf_INCLUDE_DIRS
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# - Protobuf_LIBRARIES or Protobuf_LIBRARY / Protobuf_LIBRARY_DEBUG for find_package()
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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 to rebuild .proto files" OFF)
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if(PROTOBUF_UPDATE_FILES)
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if(NOT COMMAND PROTOBUF_GENERATE_CPP)
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find_package(Protobuf QUIET)
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endif()
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if(DEFINED Protobuf_PROTOC_EXECUTABLE AND EXISTS ${Protobuf_PROTOC_EXECUTABLE})
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message(STATUS "The protocol buffer compiler is found (${Protobuf_PROTOC_EXECUTABLE})")
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else()
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message(FATAL_ERROR "The protocol buffer compiler is not found (Protobuf_PROTOC_EXECUTABLE='${Protobuf_PROTOC_EXECUTABLE}')")
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endif()
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endif()
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if(NOT BUILD_PROTOBUF AND NOT (DEFINED Protobuf_INCLUDE_DIRS AND DEFINED Protobuf_LIBRARIES))
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find_package(Protobuf QUIET)
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endif()
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if(Protobuf_FOUND AND NOT BUILD_PROTOBUF)
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# nothing
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else()
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set(Protobuf_LIBRARIES libprotobuf)
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set(Protobuf_INCLUDE_DIRS "${OpenCV_SOURCE_DIR}/3rdparty/protobuf/src")
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if(NOT TARGET ${Protobuf_LIBRARIES})
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add_subdirectory("${OpenCV_SOURCE_DIR}/3rdparty/protobuf" "${OpenCV_BINARY_DIR}/3rdparty/protobuf")
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endif()
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set(Protobuf_FOUND 1)
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endif()
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