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@@ -0,0 +1,139 @@
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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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+
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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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+
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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 ${CMAKE_CURRENT_SOURCE_DIR})
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+ endif()
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+
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+ # Add well-known type protos include path
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+ list(APPEND _protobuf_include_path
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+ -I "${_PROTOBUF_IMPORT_PREFIX}/@CMAKE_INSTALL_INCLUDEDIR@")
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+
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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 ${ABS_PATH})
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+ endif()
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+ endforeach()
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+ endif()
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+
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+ set(${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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+
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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}/${FIL_WE}.pb.h")
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+
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+ add_custom_command(
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+ OUTPUT "${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 ${FIL}"
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+ VERBATIM)
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+ endforeach()
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+
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+ set_source_files_properties(${${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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+
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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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+
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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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+
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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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+#
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+# Main.
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+#
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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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+
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+# The Protobuf library
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+_protobuf_find_libraries(PROTOBUF protobuf)
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+
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+# The Protobuf Lite library
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+_protobuf_find_libraries(PROTOBUF_LITE protobuf-lite)
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+
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+# The Protobuf Protoc Library
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+_protobuf_find_libraries(PROTOBUF_PROTOC protoc)
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+
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+if(UNIX)
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+ _protobuf_find_threads()
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+endif()
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+
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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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+
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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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+
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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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+
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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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Feng Xiao