235 lines
7.2 KiB
CMake
235 lines
7.2 KiB
CMake
# Functions
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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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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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function(PROTOBUF_GENERATE_PYTHON SRCS)
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if(NOT ARGN)
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message(SEND_ERROR "Error: PROTOBUF_GENERATE_PYTHON() 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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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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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}/${FIL_WE}_pb2.py")
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add_custom_command(
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OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}_pb2.py"
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COMMAND ${Protobuf_PROTOC_EXECUTABLE} --python_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 Python protocol buffer compiler on ${FIL}"
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VERBATIM )
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endforeach()
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set(${SRCS} ${${SRCS}} PARENT_SCOPE)
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endfunction()
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# Environment
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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_SRC_ROOT_FOLDER
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PROTOBUF_IMPORT_DIRS
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PROTOBUF_DEBUG
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PROTOBUF_LIBRARY
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PROTOBUF_PROTOC_LIBRARY
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PROTOBUF_INCLUDE_DIR
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PROTOBUF_PROTOC_EXECUTABLE
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PROTOBUF_LIBRARY_DEBUG
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PROTOBUF_PROTOC_LIBRARY_DEBUG
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PROTOBUF_LITE_LIBRARY
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PROTOBUF_LITE_LIBRARY_DEBUG
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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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if(DEFINED 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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include(SelectLibraryConfigurations)
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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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if(${name}_LIBRARIES)
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# Use result recorded by a previous call.
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elseif(${name}_LIBRARY)
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# Honor cache entry used by CMake 3.5 and lower.
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set(${name}_LIBRARIES "${${name}_LIBRARY}" PARENT_SCOPE)
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else()
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get_target_property(${name}_LIBRARY_RELEASE protobuf::lib${filename}
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LOCATION_RELEASE)
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get_target_property(${name}_LIBRARY_DEBUG protobuf::lib${filename}
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LOCATION_DEBUG)
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endif()
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select_library_configurations(${name})
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set(${name}_LIBRARY ${${name}_LIBRARY} PARENT_SCOPE)
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set(${name}_LIBRARIES ${${name}_LIBRARIES} PARENT_SCOPE)
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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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get_target_property(Protobuf_INCLUDE_DIRS protobuf::libprotobuf
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INTERFACE_INCLUDE_DIRECTORIES)
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# Set the protoc Executable
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get_target_property(Protobuf_PROTOC_EXECUTABLE protobuf::protoc
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IMPORTED_LOCATION_RELEASE)
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if(NOT EXISTS "${Protobuf_PROTOC_EXECUTABLE}")
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get_target_property(Protobuf_PROTOC_EXECUTABLE protobuf::protoc
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IMPORTED_LOCATION_DEBUG)
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endif()
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# Version info variable
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set(Protobuf_VERSION "@protobuf_VERSION@")
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include(FindPackageHandleStandardArgs)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(Protobuf
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REQUIRED_VARS Protobuf_PROTOC_EXECUTABLE Protobuf_LIBRARIES Protobuf_INCLUDE_DIRS
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VERSION_VAR Protobuf_VERSION
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)
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# Backwards compatibility
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# Define upper case versions of output variables
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foreach(Camel
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Protobuf_VERSION
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Protobuf_SRC_ROOT_FOLDER
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Protobuf_IMPORT_DIRS
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Protobuf_DEBUG
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Protobuf_INCLUDE_DIRS
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Protobuf_LIBRARIES
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Protobuf_PROTOC_LIBRARIES
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Protobuf_LITE_LIBRARIES
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Protobuf_LIBRARY
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Protobuf_PROTOC_LIBRARY
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Protobuf_INCLUDE_DIR
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Protobuf_PROTOC_EXECUTABLE
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Protobuf_LIBRARY_DEBUG
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Protobuf_PROTOC_LIBRARY_DEBUG
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Protobuf_LITE_LIBRARY
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Protobuf_LITE_LIBRARY_DEBUG
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)
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string(TOUPPER ${Camel} UPPER)
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set(${UPPER} ${${Camel}})
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endforeach()
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