Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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139 lines
4.4 KiB
139 lines
4.4 KiB
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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