140 lines
4.4 KiB
CMake
140 lines
4.4 KiB
CMake
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if(PROTOBUF_SRC_ROOT_FOLDER)
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message(AUTHOR_WARNING "Variable PROTOBUF_SRC_ROOT_FOLDER defined, but not"
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" used in CONFIG mode")
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endif()
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function(PROTOBUF_GENERATE_CPP SRCS HDRS)
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if(NOT ARGN)
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message(SEND_ERROR "Error: PROTOBUF_GENERATE_CPP() called without any proto files")
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return()
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endif()
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if(PROTOBUF_GENERATE_CPP_APPEND_PATH)
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# Create an include path for each file specified
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foreach(FIL ${ARGN})
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get_filename_component(ABS_FIL ${FIL} ABSOLUTE)
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get_filename_component(ABS_PATH ${ABS_FIL} PATH)
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list(FIND _protobuf_include_path ${ABS_PATH} _contains_already)
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if(${_contains_already} EQUAL -1)
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list(APPEND _protobuf_include_path -I ${ABS_PATH})
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endif()
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endforeach()
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else()
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set(_protobuf_include_path -I ${CMAKE_CURRENT_SOURCE_DIR})
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endif()
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# Add well-known type protos include path
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list(APPEND _protobuf_include_path
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-I "${_PROTOBUF_IMPORT_PREFIX}/@CMAKE_INSTALL_INCLUDEDIR@")
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if(DEFINED PROTOBUF_IMPORT_DIRS)
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foreach(DIR ${PROTOBUF_IMPORT_DIRS})
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get_filename_component(ABS_PATH ${DIR} ABSOLUTE)
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list(FIND _protobuf_include_path ${ABS_PATH} _contains_already)
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if(${_contains_already} EQUAL -1)
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list(APPEND _protobuf_include_path -I ${ABS_PATH})
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endif()
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endforeach()
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endif()
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set(${SRCS})
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set(${HDRS})
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foreach(FIL ${ARGN})
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get_filename_component(ABS_FIL ${FIL} ABSOLUTE)
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get_filename_component(FIL_WE ${FIL} NAME_WE)
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list(APPEND ${SRCS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.cc")
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list(APPEND ${HDRS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.h")
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add_custom_command(
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OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.cc"
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"${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.h"
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COMMAND ${PROTOBUF_PROTOC_EXECUTABLE}
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ARGS --cpp_out ${CMAKE_CURRENT_BINARY_DIR} ${_protobuf_include_path} ${ABS_FIL}
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DEPENDS ${ABS_FIL} ${PROTOBUF_PROTOC_EXECUTABLE}
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COMMENT "Running C++ protocol buffer compiler on ${FIL}"
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VERBATIM)
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endforeach()
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set_source_files_properties(${${SRCS}} ${${HDRS}} PROPERTIES GENERATED TRUE)
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set(${SRCS} ${${SRCS}} PARENT_SCOPE)
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set(${HDRS} ${${HDRS}} PARENT_SCOPE)
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endfunction()
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# Internal function: search for normal library as well as a debug one
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# if the debug one is specified also include debug/optimized keywords
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# in *_LIBRARIES variable
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function(_protobuf_find_libraries name filename)
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get_target_property(${name}_LIBRARY lib${filename}
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IMPORTED_LOCATION_RELEASE)
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set(${name}_LIBRARY "${${name}_LIBRARY}" PARENT_SCOPE)
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get_target_property(${name}_LIBRARY_DEBUG lib${filename}
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IMPORTED_LOCATION_DEBUG)
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set(${name}_LIBRARY_DEBUG "${${name}_LIBRARY_DEBUG}" PARENT_SCOPE)
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if(NOT ${name}_LIBRARY_DEBUG)
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# There is no debug library
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set(${name}_LIBRARY_DEBUG ${${name}_LIBRARY} PARENT_SCOPE)
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set(${name}_LIBRARIES ${${name}_LIBRARY} PARENT_SCOPE)
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else()
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# There IS a debug library
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set(${name}_LIBRARIES
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optimized ${${name}_LIBRARY}
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debug ${${name}_LIBRARY_DEBUG}
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PARENT_SCOPE
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)
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endif()
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endfunction()
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# Internal function: find threads library
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function(_protobuf_find_threads)
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set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
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find_package(Threads)
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if(Threads_FOUND)
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list(APPEND PROTOBUF_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
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set(PROTOBUF_LIBRARIES "${PROTOBUF_LIBRARIES}" PARENT_SCOPE)
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endif()
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endfunction()
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#
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# Main.
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#
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# By default have PROTOBUF_GENERATE_CPP macro pass -I to protoc
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# for each directory where a proto file is referenced.
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if(NOT DEFINED PROTOBUF_GENERATE_CPP_APPEND_PATH)
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set(PROTOBUF_GENERATE_CPP_APPEND_PATH TRUE)
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endif()
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# The Protobuf library
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_protobuf_find_libraries(PROTOBUF protobuf)
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# The Protobuf Lite library
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_protobuf_find_libraries(PROTOBUF_LITE protobuf-lite)
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# The Protobuf Protoc Library
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_protobuf_find_libraries(PROTOBUF_PROTOC protoc)
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if(UNIX)
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_protobuf_find_threads()
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endif()
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# Set the include directory
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set(PROTOBUF_INCLUDE_DIR "${_PROTOBUF_IMPORT_PREFIX}/@CMAKE_INSTALL_INCLUDEDIR@")
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# Set the protoc Executable
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get_target_property(PROTOBUF_PROTOC_EXECUTABLE protoc
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IMPORTED_LOCATION_RELEASE)
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if(NOT PROTOBUF_PROTOC_EXECUTABLE)
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get_target_property(PROTOBUF_PROTOC_EXECUTABLE protoc
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IMPORTED_LOCATION_DEBUG)
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endif()
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include(FindPackageHandleStandardArgs)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(PROTOBUF DEFAULT_MSG
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PROTOBUF_LIBRARY PROTOBUF_INCLUDE_DIR)
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if(PROTOBUF_FOUND)
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set(PROTOBUF_INCLUDE_DIRS ${PROTOBUF_INCLUDE_DIR})
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endif()
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