Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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127 lines
4.5 KiB
127 lines
4.5 KiB
# User options |
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include("${CMAKE_CURRENT_LIST_DIR}/protobuf-options.cmake") |
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# Depend packages |
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@_protobuf_FIND_ZLIB@ |
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# Imported targets |
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include("${CMAKE_CURRENT_LIST_DIR}/protobuf-targets.cmake") |
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function(protobuf_generate) |
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include(CMakeParseArguments) |
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set(_options APPEND_PATH) |
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set(_singleargs LANGUAGE OUT_VAR EXPORT_MACRO PROTOC_OUT_DIR) |
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if(COMMAND target_sources) |
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list(APPEND _singleargs TARGET) |
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endif() |
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set(_multiargs PROTOS IMPORT_DIRS GENERATE_EXTENSIONS) |
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cmake_parse_arguments(protobuf_generate "${_options}" "${_singleargs}" "${_multiargs}" "${ARGN}") |
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if(NOT protobuf_generate_PROTOS AND NOT protobuf_generate_TARGET) |
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message(SEND_ERROR "Error: protobuf_generate called without any targets or source files") |
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return() |
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endif() |
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if(NOT protobuf_generate_OUT_VAR AND NOT protobuf_generate_TARGET) |
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message(SEND_ERROR "Error: protobuf_generate called without a target or output variable") |
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return() |
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endif() |
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if(NOT protobuf_generate_LANGUAGE) |
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set(protobuf_generate_LANGUAGE cpp) |
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endif() |
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string(TOLOWER ${protobuf_generate_LANGUAGE} protobuf_generate_LANGUAGE) |
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if(NOT protobuf_generate_PROTOC_OUT_DIR) |
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set(protobuf_generate_PROTOC_OUT_DIR ${CMAKE_CURRENT_BINARY_DIR}) |
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endif() |
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if(protobuf_generate_EXPORT_MACRO AND protobuf_generate_LANGUAGE STREQUAL cpp) |
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set(_dll_export_decl "dllexport_decl=${protobuf_generate_EXPORT_MACRO}:") |
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endif() |
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if(NOT protobuf_generate_GENERATE_EXTENSIONS) |
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if(protobuf_generate_LANGUAGE STREQUAL cpp) |
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set(protobuf_generate_GENERATE_EXTENSIONS .pb.h .pb.cc) |
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elseif(protobuf_generate_LANGUAGE STREQUAL python) |
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set(protobuf_generate_GENERATE_EXTENSIONS _pb2.py) |
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else() |
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message(SEND_ERROR "Error: protobuf_generate given unknown Language ${LANGUAGE}, please provide a value for GENERATE_EXTENSIONS") |
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return() |
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endif() |
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endif() |
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if(protobuf_generate_TARGET) |
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get_target_property(_source_list ${protobuf_generate_TARGET} SOURCES) |
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foreach(_file ${_source_list}) |
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if(_file MATCHES "proto$") |
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list(APPEND protobuf_generate_PROTOS ${_file}) |
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endif() |
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endforeach() |
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endif() |
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if(NOT protobuf_generate_PROTOS) |
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message(SEND_ERROR "Error: protobuf_generate could not find any .proto files") |
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return() |
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endif() |
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if(protobuf_generate_APPEND_PATH) |
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# Create an include path for each file specified |
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foreach(_file ${protobuf_generate_PROTOS}) |
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get_filename_component(_abs_file ${_file} ABSOLUTE) |
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get_filename_component(_abs_path ${_abs_file} 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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foreach(DIR ${protobuf_generate_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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set(_generated_srcs_all) |
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foreach(_proto ${protobuf_generate_PROTOS}) |
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get_filename_component(_abs_file ${_proto} ABSOLUTE) |
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get_filename_component(_abs_dir ${_abs_file} DIRECTORY) |
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get_filename_component(_basename ${_proto} NAME_WE) |
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file(RELATIVE_PATH _rel_dir ${CMAKE_CURRENT_SOURCE_DIR} ${_abs_dir}) |
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set(_generated_srcs) |
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foreach(_ext ${protobuf_generate_GENERATE_EXTENSIONS}) |
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list(APPEND _generated_srcs "${protobuf_generate_PROTOC_OUT_DIR}/${_rel_dir}/${_basename}${_ext}") |
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endforeach() |
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list(APPEND _generated_srcs_all ${_generated_srcs}) |
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add_custom_command( |
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OUTPUT ${_generated_srcs} |
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COMMAND protobuf::protoc |
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ARGS --${protobuf_generate_LANGUAGE}_out ${_dll_export_decl}${protobuf_generate_PROTOC_OUT_DIR}/${_rel_dir} ${_protobuf_include_path} ${_abs_file} |
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DEPENDS ${_abs_file} protobuf::protoc |
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COMMENT "Running ${protobuf_generate_LANGUAGE} protocol buffer compiler on ${_proto}" |
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VERBATIM ) |
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endforeach() |
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set_source_files_properties(${_generated_srcs_all} PROPERTIES GENERATED TRUE) |
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if(protobuf_generate_OUT_VAR) |
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set(${protobuf_generate_OUT_VAR} ${_generated_srcs_all} PARENT_SCOPE) |
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endif() |
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if(protobuf_generate_TARGET) |
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target_sources(${protobuf_generate_TARGET} PRIVATE ${_generated_srcs_all}) |
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endif() |
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endfunction() |
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# CMake FindProtobuf module compatible file |
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if(protobuf_MODULE_COMPATIBLE) |
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include("${CMAKE_CURRENT_LIST_DIR}/protobuf-module.cmake") |
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endif()
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