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5078e2758b
Reviewers: sammccall Reviewed By: sammccall Subscribers: mgorny, ilya-biryukov, MaskRay, jkorous, arphaman, kadircet, usaxena95, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D79387
84 lines
3.8 KiB
CMake
84 lines
3.8 KiB
CMake
# This setup requires gRPC to be built from sources using CMake and installed to
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# ${GRPC_INSTALL_PATH} via -DCMAKE_INSTALL_PREFIX=${GRPC_INSTALL_PATH}.
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# FIXME(kirillbobyrev): Check if gRPC and Protobuf headers can be included at
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# configure time.
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if (GRPC_INSTALL_PATH)
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set(protobuf_MODULE_COMPATIBLE TRUE)
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find_package(Protobuf CONFIG REQUIRED HINTS ${GRPC_INSTALL_PATH})
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message(STATUS "Using protobuf ${protobuf_VERSION}")
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find_package(gRPC CONFIG REQUIRED HINTS ${GRPC_INSTALL_PATH})
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message(STATUS "Using gRPC ${gRPC_VERSION}")
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include_directories(${Protobuf_INCLUDE_DIRS})
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# gRPC CMake CONFIG gives the libraries slightly odd names, make them match
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# the conventional system-installed names.
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set_target_properties(protobuf::libprotobuf PROPERTIES IMPORTED_GLOBAL TRUE)
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add_library(protobuf ALIAS protobuf::libprotobuf)
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set_target_properties(gRPC::grpc++ PROPERTIES IMPORTED_GLOBAL TRUE)
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add_library(grpc++ ALIAS gRPC::grpc++)
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set(GRPC_CPP_PLUGIN $<TARGET_FILE:gRPC::grpc_cpp_plugin>)
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set(PROTOC ${Protobuf_PROTOC_EXECUTABLE})
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else()
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find_program(GRPC_CPP_PLUGIN grpc_cpp_plugin)
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find_program(PROTOC protoc)
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if (GRPC_CPP_PLUGIN-NOTFOUND OR PROTOC-NOTFOUND)
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message(FATAL_ERROR "gRPC C++ Plugin and Protoc must be on $PATH for Clangd remote index build")
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endif()
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# On macOS the libraries are typically installed via Homebrew and are not on
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# the system path.
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if (${APPLE})
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find_program(HOMEBREW brew)
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# If Homebrew is not found, the user might have installed libraries
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# manually. Fall back to the system path.
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if (NOT HOMEBREW-NOTFOUND)
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execute_process(COMMAND ${HOMEBREW} --prefix grpc
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OUTPUT_VARIABLE GRPC_HOMEBREW_PATH
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RESULT_VARIABLE GRPC_HOMEBREW_RETURN_CODE
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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execute_process(COMMAND ${HOMEBREW} --prefix protobuf
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OUTPUT_VARIABLE PROTOBUF_HOMEBREW_PATH
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RESULT_VARIABLE PROTOBUF_HOMEBREW_RETURN_CODE
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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# If either library is not installed via Homebrew, fall back to the
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# system path.
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if (GRPC_HOMEBREW_RETURN_CODE EQUAL "0")
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include_directories(${GRPC_HOMEBREW_PATH}/include)
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link_directories(${GRPC_HOMEBREW_PATH}/lib)
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endif()
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if (PROTOBUF_HOMEBREW_RETURN_CODE EQUAL "0")
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include_directories(${PROTOBUF_HOMEBREW_PATH}/include)
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link_directories(${PROTOBUF_HOMEBREW_PATH}/lib)
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endif()
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endif()
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endif()
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endif()
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# Proto headers are generated in ${CMAKE_CURRENT_BINARY_DIR}.
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# Libraries that use these headers should adjust the include path.
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# FIXME(kirillbobyrev): Allow optional generation of gRPC code and give callers
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# control over it via additional parameters.
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function(generate_grpc_protos LibraryName ProtoFile)
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get_filename_component(ProtoSourceAbsolutePath "${CMAKE_CURRENT_SOURCE_DIR}/${ProtoFile}" ABSOLUTE)
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get_filename_component(ProtoSourcePath ${ProtoSourceAbsolutePath} PATH)
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set(GeneratedProtoSource "${CMAKE_CURRENT_BINARY_DIR}/Index.pb.cc")
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set(GeneratedProtoHeader "${CMAKE_CURRENT_BINARY_DIR}/Index.pb.h")
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set(GeneratedGRPCSource "${CMAKE_CURRENT_BINARY_DIR}/Index.grpc.pb.cc")
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set(GeneratedGRPCHeader "${CMAKE_CURRENT_BINARY_DIR}/Index.grpc.pb.h")
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add_custom_command(
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OUTPUT "${GeneratedProtoSource}" "${GeneratedProtoHeader}" "${GeneratedGRPCSource}" "${GeneratedGRPCHeader}"
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COMMAND ${PROTOC}
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ARGS --grpc_out="${CMAKE_CURRENT_BINARY_DIR}"
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--cpp_out="${CMAKE_CURRENT_BINARY_DIR}"
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--proto_path="${ProtoSourcePath}"
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--plugin=protoc-gen-grpc="${GRPC_CPP_PLUGIN}"
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"${ProtoSourceAbsolutePath}"
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DEPENDS "${ProtoSourceAbsolutePath}")
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add_clang_library(${LibraryName} ${GeneratedProtoSource} ${GeneratedGRPCSource}
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PARTIAL_SOURCES_INTENDED
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LINK_LIBS grpc++ protobuf)
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endfunction()
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