From d37add0f20c93432c0b4c12866810c124a7a18ec Mon Sep 17 00:00:00 2001 From: Sander Vrijders Date: Fri, 25 Mar 2016 19:13:32 +0100 Subject: build: Add protobuf-c commands for cmake This adds a cmake file so that the build can ask to generate protobuf-c files from .proto files. The messages between the IRM and the library are compiled into the library. --- cmake/FindProtobufC.cmake | 72 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 cmake/FindProtobufC.cmake (limited to 'cmake/FindProtobufC.cmake') diff --git a/cmake/FindProtobufC.cmake b/cmake/FindProtobufC.cmake new file mode 100644 index 00000000..cae9f1c3 --- /dev/null +++ b/cmake/FindProtobufC.cmake @@ -0,0 +1,72 @@ +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) -- cgit v1.2.3