diff options
Diffstat (limited to 'cmake/protobuf-config.cmake.in')
| -rw-r--r-- | cmake/protobuf-config.cmake.in | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/cmake/protobuf-config.cmake.in b/cmake/protobuf-config.cmake.in index a044fe5c..83213547 100644 --- a/cmake/protobuf-config.cmake.in +++ b/cmake/protobuf-config.cmake.in @@ -7,6 +7,105 @@ include("${CMAKE_CURRENT_LIST_DIR}/protobuf-options.cmake") # Imported targets include("${CMAKE_CURRENT_LIST_DIR}/protobuf-targets.cmake") +function(protobuf_generate) + include(CMakeParseArguments) + set(_singleargs LANGUAGE OUT_VAR) + if(COMMAND target_sources) + list(APPEND _singleargs TARGET) + endif() + + cmake_parse_arguments(protobuf_generate "APPEND_PATH" "${_singleargs}" "PROTOS IMPORT_DIRS GENERATE_EXTENSIONS" "${ARGN}") + + if(protobuf_generate_PROTOS AND NOT protobuf_generate_TARGET) + message(SEND_ERROR "Error: protobuf_generate called without any targets or source files") + return() + endif() + + if(NOT protobuf_generate_OUT_VAR AND NOT protobuf_generate_TARGET) + message(SEND_ERROR "Error: protobuf_generate called without a target or output variable") + return() + endif() + + if(NOT protobuf_generate_LANGUAGE) + set(protobuf_generate_LANGUAGE cpp) + endif() + string(TOLOWER ${protobuf_generate_LANGUAGE} protobuf_generate_LANGUAGE) + + if(NOT protobuf_GENERATE_EXTENSIONS) + if(protobuf_generate_LANGUAGE STREQUAL cpp) + set(protobuf_GENERATE_EXTENSIONS .pb.h .pb.cc) + elseif(protobuf_generate_LANGUAGE STREQUAL python) + set(protobuf_GENERATE_EXTENSIONS _pb2.py) + else() + message(SEND_ERROR "Error: protobuf_generate given unknown Language ${LANGUAGE}, please provide a value for GENERATE_EXTENSIONS") + return() + endif() + endif() + + if(protobuf_generate_APPEND_PATH) + # Create an include path for each file specified + foreach(_file ${ARGN}) + get_filename_component(_abs_file ${_file} ABSOLUTE) + get_filename_component(_abs_path ${_abs_file} 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() + + foreach(DIR ${protobuf_generate_IMPORT_DIRS}) + get_filename_component(ABS_PATH ${DIR} ABSOLUTE) + list(FIND _protobuf_include_path ${ABS_PATH} _contains_already) + if(${_contains_already} EQUAL -1) + list(APPEND _protobuf_include_path -I ${ABS_PATH}) + endif() + endforeach() + + if(protobuf_generate_TARGET) + get_target_property(_source_list ${protobuf_generate_TARGET} SOURCES) + foreach(_file ${_source_list}) + if(_file MATCHES "proto$") + list(APPEND protobuf_generate_PROTOS ${_file}) + endif() + endforeach() + endif() + + if(NOT protobuf_generate_PROTOS) + message(SEND_ERROR "Error: protobuf_generate could not find any .proto files") + return() + endif() + + set(_generated_srcs) + foreach(_proto ${protobuf_generate_PROTOS}) + get_filename_component(_abs_file ${_proto} ABSOLUTE) + get_filename_component(_basename ${_proto} NAME_WE) + + foreach(_ext ${_output_extensions}) + list(APPEND _generated_srcs "${CMAKE_CURRENT_BINARY_DIR}/${_basename}${_ext}") + endforeach() + + add_custom_command( + OUTPUT ${_generated_srcs} + COMMAND protobuf::protoc + ARGS --${protobuf_generate_LANGUAGE}_out ${CMAKE_CURRENT_BINARY_DIR} ${_protobuf_include_path} ${_abs_file} + DEPENDS ${ABS_FIL} protobuf::protoc + COMMENT "Running ${protobuf_generate_LANGUAGE} protocol buffer compiler on ${_proto}" + VERBATIM ) + endforeach() + + set_source_files_properties(${_generated_srcs} PROPERTIES GENERATED TRUE) + if(protobuf_generate_OUT_VAR) + set(${protobuf_generate_OUT_VAR} ${_generated_srcs} PARENT_SCOPE) + endif() + if(protobuf_generate_TARGET) + target_sources(${protobuf_generate_TARGET} PUBLIC ${_generated_srcs}) + endif() + +endfunction() + # CMake FindProtobuf module compatible file if(protobuf_MODULE_COMPATIBLE) include("${CMAKE_CURRENT_LIST_DIR}/protobuf-module.cmake") |