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22 lines
1.1 KiB

find_program(PROTOC protoc)
function(proto_generate_cpp PROTO_FILE PB_OUT HDR_VAR SRC_VAR)
get_filename_component(PROTO_FILE_NAME ${PROTO_FILE} NAME_WE)
get_filename_component(PROTO_FILE_PATH ${PROTO_FILE} ABSOLUTE BASE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
get_filename_component(PROTO_FILE_DIR ${PROTO_FILE_PATH} DIRECTORY)
set(PROTO_HDR "${PB_OUT}/${PROTO_FILE_NAME}.pb.h")
set(PROTO_SRC "${PB_OUT}/${PROTO_FILE_NAME}.pb.cc")
set(${HDR_VAR} ${${HDR_VAR}} ${PROTO_HDR} PARENT_SCOPE)
set(${SRC_VAR} ${${SRC_VAR}} ${PROTO_SRC} PARENT_SCOPE)
if(NOT CMAKE_SCRIPT_MODE_FILE)
add_custom_command(OUTPUT ${PROTO_HDR} ${PROTO_SRC}
COMMAND ${PROTOC}
--cpp_out=${PB_OUT}
--proto_path ${PROTO_FILE_DIR}
${PROTO_FILE_PATH}
DEPENDS ${PROTO_FILE_PATH}
COMMENT "Generating nanopb sources for ${PROTO_FILE}")
set_property(SOURCE ${PROTO_HDR} ${PROTO_SRC} PROPERTY GENERATED TRUE)
set_property(DIRECTORY . APPEND PROPERTY ADDITIONAL_MAKE_CLEAN_FILES ${PROTO_HDR} ${PROTO_SRC})
endif()
endfunction()