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# Minimum CMake required
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cmake_minimum_required(VERSION 2.8)
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# Project
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project(HelloWorld C CXX)
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if(NOT MSVC)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
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else()
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add_definitions(-D_WIN32_WINNT=0x600)
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endif()
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# Protobuf
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# NOTE: we cannot use "CONFIG" mode here because protobuf-config.cmake
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# is broken when used with CMAKE_INSTALL_PREFIX
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find_package(Protobuf REQUIRED)
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message(STATUS "Using protobuf ${protobuf_VERSION}")
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# {Protobuf,PROTOBUF}_FOUND is defined based on find_package type ("MODULE" vs "CONFIG").
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# For "MODULE", the case has also changed between cmake 3.5 and 3.6.
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# We use the legacy uppercase version for *_LIBRARIES AND *_INCLUDE_DIRS variables
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# as newer cmake versions provide them too for backward compatibility.
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if(Protobuf_FOUND OR PROTOBUF_FOUND)
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if(TARGET protobuf::libprotobuf)
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set(_PROTOBUF_LIBPROTOBUF protobuf::libprotobuf)
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else()
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set(_PROTOBUF_LIBPROTOBUF ${PROTOBUF_LIBRARIES})
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include_directories(${PROTOBUF_INCLUDE_DIRS})
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endif()
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if(TARGET protobuf::protoc)
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set(_PROTOBUF_PROTOC $<TARGET_FILE:protobuf::protoc>)
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else()
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set(_PROTOBUF_PROTOC ${PROTOBUF_PROTOC_EXECUTABLE})
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endif()
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else()
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message(WARNING "Failed to locate libprotobuf and protoc!")
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endif()
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# gRPC
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find_package(gRPC CONFIG REQUIRED)
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message(STATUS "Using gRPC ${gRPC_VERSION}")
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# gRPC C++ plugin
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get_target_property(gRPC_CPP_PLUGIN_EXECUTABLE gRPC::grpc_cpp_plugin
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IMPORTED_LOCATION_RELEASE)
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# Proto file
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get_filename_component(hw_proto "../../protos/helloworld.proto" ABSOLUTE)
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get_filename_component(hw_proto_path "${hw_proto}" PATH)
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# Generated sources
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protobuf_generate_cpp(hw_proto_srcs hw_proto_hdrs "${hw_proto}")
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set(hw_grpc_srcs "${CMAKE_CURRENT_BINARY_DIR}/helloworld.grpc.pb.cc")
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set(hw_grpc_hdrs "${CMAKE_CURRENT_BINARY_DIR}/helloworld.grpc.pb.h")
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add_custom_command(
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OUTPUT "${hw_grpc_srcs}" "${hw_grpc_hdrs}"
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COMMAND ${_PROTOBUF_PROTOC}
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ARGS --grpc_out "${CMAKE_CURRENT_BINARY_DIR}" -I "${hw_proto_path}"
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--plugin=protoc-gen-grpc="${gRPC_CPP_PLUGIN_EXECUTABLE}"
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"${hw_proto}"
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DEPENDS "${hw_proto}")
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# Generated include directory
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|
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include_directories("${CMAKE_CURRENT_BINARY_DIR}")
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# Targets greeter_[async_](client|server)
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foreach(_target
|
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|
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greeter_client greeter_server
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|
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greeter_async_client greeter_async_server)
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add_executable(${_target} "${_target}.cc"
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|
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${hw_proto_srcs}
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|
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${hw_grpc_srcs})
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|
|
target_link_libraries(${_target}
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|
|
${_PROTOBUF_LIBPROTOBUF}
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|
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gRPC::grpc++_unsecure)
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endforeach()
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