function(PROTOBUF_GENERATE_C SRCS HDRS) if(NOT ARGN) message(SEND_ERROR "Error: PROTOBUF_GENERATE_C() called without any proto files") return() endif() if(PROTOBUF_GENERATE_C_APPEND_PATH) # Create an include path for each file specified foreach(FIL ${ARGN}) get_filename_component(ABS_FIL ${FIL} ABSOLUTE) get_filename_component(ABS_PATH ${ABS_FIL} PATH) list(FIND _protobuf_include_path ${ABS_PATH} _contains_already) if(${_contains_already} EQUAL -1) list(APPEND _protobuf_include_path -I ${ABS_PATH}) endif() endforeach() else() set(_protobuf_include_path -I ${CMAKE_CURRENT_SOURCE_DIR}) endif() set(${SRCS}) set(${HDRS}) foreach(FIL ${ARGN}) get_filename_component(ABS_FIL ${FIL} ABSOLUTE) get_filename_component(FIL_WE ${FIL} NAME_WE) list(APPEND ${SRCS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb-c.cc") list(APPEND ${HDRS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb-c.h") add_custom_command( OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb-c.cc" "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb-c.h" COMMAND ${PROTOBUF_PROTOC_C_EXECUTABLE} ARGS --c_out=${CMAKE_CURRENT_BINARY_DIR} ${_protobuf_include_path} ${ABS_FIL} DEPENDS ${ABS_FIL} ${PROTOBUF_PROTOC_C_EXECUTABLE} COMMENT "Running C protocol buffer compiler on ${FIL}" VERBATIM ) endforeach() set_source_files_properties(${${SRCS}} ${${HDRS}} PROPERTIES GENERATED TRUE) set(${SRCS} ${${SRCS}} PARENT_SCOPE) set(${HDRS} ${${HDRS}} PARENT_SCOPE) endfunction() # By default have PROTOBUF_GENERATE_C macro pass -I to protoc # for each directory where a proto file is referenced. if(NOT DEFINED PROTOBUF_GENERATE_C_APPEND_PATH) set(PROTOBUF_GENERATE_C_APPEND_PATH TRUE) endif() # Find library find_library(PROTOBUF_C_LIBRARY NAMES libprotobuf-c.so libprotobuf-c ) mark_as_advanced(PROTOBUF_C_LIBRARY) # Find the include directory find_path(PROTOBUF_C_INCLUDE_DIR google/protobuf-c/protobuf-c.h ) mark_as_advanced(PROTOBUF_C_INCLUDE_DIR) # Find the protoc-c Executable find_program(PROTOBUF_PROTOC_C_EXECUTABLE NAMES protoc-c DOC "The Google Protocol Buffers C Compiler" ) mark_as_advanced(PROTOBUF_PROTOC_C_EXECUTABLE) find_package(PackageHandleStandardArgs) FIND_PACKAGE_HANDLE_STANDARD_ARGS(ProtobufC DEFAULT_MSG PROTOBUF_C_LIBRARY PROTOBUF_C_INCLUDE_DIR PROTOBUF_PROTOC_C_EXECUTABLE)