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protobuf_generate_cpp.cmake
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protobuf_generate_cpp.cmake
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# This file declares functions adding custom commands for generating C++ files from *.proto files:
# function (protobuf_generate_cpp SRCS HDRS)
# function (protobuf_generate_grpc_cpp SRCS HDRS)
if (NOT USE_PROTOBUF)
message (WARNING "Could not use protobuf_generate_cpp() without the protobuf library")
return()
endif()
if (NOT DEFINED PROTOBUF_PROTOC_EXECUTABLE)
set (PROTOBUF_PROTOC_EXECUTABLE "$<TARGET_FILE:protoc>")
endif()
if (NOT DEFINED GRPC_CPP_PLUGIN_EXECUTABLE)
set (GRPC_CPP_PLUGIN_EXECUTABLE $<TARGET_FILE:grpc_cpp_plugin>)
endif()
if (NOT DEFINED PROTOBUF_GENERATE_CPP_APPEND_PATH)
set (PROTOBUF_GENERATE_CPP_APPEND_PATH TRUE)
endif()
function(protobuf_generate_cpp_impl SRCS HDRS MODES OUTPUT_FILE_EXTS PLUGIN)
if(NOT ARGN)
message(SEND_ERROR "Error: protobuf_generate_cpp() called without any proto files")
return()
endif()
if(PROTOBUF_GENERATE_CPP_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 ${CMAKE_CURRENT_SOURCE_DIR})
endif()
if(DEFINED PROTOBUF_IMPORT_DIRS AND NOT DEFINED Protobuf_IMPORT_DIRS)
set(Protobuf_IMPORT_DIRS "${PROTOBUF_IMPORT_DIRS}")
endif()
if(DEFINED Protobuf_IMPORT_DIRS)
foreach(DIR ${Protobuf_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()
endif()
set (intermediate_dir ${CMAKE_CURRENT_BINARY_DIR}/intermediate)
set (protoc_args)
foreach (mode ${MODES})
list (APPEND protoc_args "--${mode}_out" ${intermediate_dir})
endforeach()
if (PLUGIN)
list (APPEND protoc_args "--plugin=${PLUGIN}")
endif()
set(srcs)
set(hdrs)
set(all_intermediate_outputs)
foreach(input_name ${ARGN})
get_filename_component(abs_name ${input_name} ABSOLUTE)
get_filename_component(name ${input_name} NAME_WE)
set (intermediate_outputs)
foreach (ext ${OUTPUT_FILE_EXTS})
set (filename "${name}${ext}")
set (output "${CMAKE_CURRENT_BINARY_DIR}/${filename}")
set (intermediate_output "${intermediate_dir}/${filename}")
list (APPEND intermediate_outputs "${intermediate_output}")
list (APPEND all_intermediate_outputs "${intermediate_output}")
if (${ext} MATCHES ".*\\.h")
list(APPEND hdrs "${output}")
else()
list(APPEND srcs "${output}")
endif()
add_custom_command(
OUTPUT ${output}
COMMAND ${CMAKE_COMMAND} -DPROTOBUF_GENERATE_CPP_SCRIPT_MODE=1 -DUSE_PROTOBUF=1 -DDIR=${CMAKE_CURRENT_BINARY_DIR} -DFILENAME=${filename} -DCOMPILER_ID=${CMAKE_CXX_COMPILER_ID} -P ${ClickHouse_SOURCE_DIR}/cmake/protobuf_generate_cpp.cmake
DEPENDS ${intermediate_output})
endforeach()
add_custom_command(
OUTPUT ${intermediate_outputs}
COMMAND ${Protobuf_PROTOC_EXECUTABLE}
ARGS ${protobuf_include_path} ${protoc_args} ${abs_name}
DEPENDS ${abs_name} ${Protobuf_PROTOC_EXECUTABLE} ${PLUGIN}
COMMENT "Running C++ protocol buffer compiler on ${name}"
VERBATIM )
endforeach()
set_source_files_properties(${srcs} ${hdrs} ${all_intermediate_outputs} PROPERTIES GENERATED TRUE)
set(${SRCS} ${srcs} PARENT_SCOPE)
set(${HDRS} ${hdrs} PARENT_SCOPE)
endfunction()
if (PROTOBUF_GENERATE_CPP_SCRIPT_MODE)
set (output "${DIR}/${FILENAME}")
set (intermediate_dir ${DIR}/intermediate)
set (intermediate_output "${intermediate_dir}/${FILENAME}")
if (COMPILER_ID STREQUAL "Clang")
set (pragma_push "#pragma clang diagnostic push\n")
set (pragma_pop "#pragma clang diagnostic pop\n")
set (pragma_disable_warnings "#pragma clang diagnostic ignored \"-Weverything\"\n")
elseif (COMPILER_ID MATCHES "GNU")
set (pragma_push "#pragma GCC diagnostic push\n")
set (pragma_pop "#pragma GCC diagnostic pop\n")
set (pragma_disable_warnings "#pragma GCC diagnostic ignored \"-Wall\"\n"
"#pragma GCC diagnostic ignored \"-Wextra\"\n"
"#pragma GCC diagnostic ignored \"-Warray-bounds\"\n"
"#pragma GCC diagnostic ignored \"-Wold-style-cast\"\n"
"#pragma GCC diagnostic ignored \"-Wshadow\"\n"
"#pragma GCC diagnostic ignored \"-Wsuggest-override\"\n"
"#pragma GCC diagnostic ignored \"-Wcast-qual\"\n"
"#pragma GCC diagnostic ignored \"-Wunused-parameter\"\n")
endif()
if (${FILENAME} MATCHES ".*\\.h")
file(WRITE "${output}"
"#pragma once\n"
${pragma_push}
${pragma_disable_warnings}
"#include \"${intermediate_output}\"\n"
${pragma_pop}
)
else()
file(WRITE "${output}"
${pragma_disable_warnings}
"#include \"${intermediate_output}\"\n"
)
endif()
return()
endif()
function(protobuf_generate_cpp SRCS HDRS)
set (modes cpp)
set (output_file_exts ".pb.cc" ".pb.h")
set (plugin)
protobuf_generate_cpp_impl(srcs hdrs "${modes}" "${output_file_exts}" "${plugin}" ${ARGN})
set(${SRCS} ${srcs} PARENT_SCOPE)
set(${HDRS} ${hdrs} PARENT_SCOPE)
endfunction()
function(protobuf_generate_grpc_cpp SRCS HDRS)
set (modes cpp grpc)
set (output_file_exts ".pb.cc" ".pb.h" ".grpc.pb.cc" ".grpc.pb.h")
set (plugin "protoc-gen-grpc=${GRPC_CPP_PLUGIN_EXECUTABLE}")
protobuf_generate_cpp_impl(srcs hdrs "${modes}" "${output_file_exts}" "${plugin}" ${ARGN})
set(${SRCS} ${srcs} PARENT_SCOPE)
set(${HDRS} ${hdrs} PARENT_SCOPE)
endfunction()