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# Minimum CMake required
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cmake_minimum_required(VERSION 2.8.12)
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# Project
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project(protobuf-examples)
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# Find required protobuf package
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find_package(protobuf CONFIG REQUIRED)
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if(protobuf_VERBOSE)
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message(STATUS "Using Protocol Buffers ${Protobuf_VERSION}")
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endif()
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set(CMAKE_INCLUDE_CURRENT_DIR TRUE)
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# http://www.cmake.org/Wiki/CMake_FAQ#How_can_I_build_my_MSVC_application_with_a_static_runtime.3F
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if(MSVC AND protobuf_MSVC_STATIC_RUNTIME)
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foreach(flag_var
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CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
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CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
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if(${flag_var} MATCHES "/MD")
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string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
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endif(${flag_var} MATCHES "/MD")
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endforeach()
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endif()
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foreach(example add_person list_people)
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set(${example}_SRCS ${example}.cc)
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set(${example}_PROTOS addressbook.proto)
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#Code Generation
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if(protobuf_MODULE_COMPATIBLE) #Legacy Support
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protobuf_generate_cpp(${example}_PROTO_SRCS ${example}_PROTO_HDRS ${${example}_PROTOS})
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list(APPEND ${example}_SRCS ${${example}_PROTO_SRCS} ${${example}_PROTO_HDRS})
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else()
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foreach(proto_file ${${example}_PROTOS})
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get_filename_component(proto_file_abs ${proto_file} ABSOLUTE)
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get_filename_component(basename ${proto_file} NAME_WE)
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set(generated_files ${basename}.pb.cc ${basename}.pb.h)
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list(APPEND ${example}_SRCS ${generated_files})
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add_custom_command(
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OUTPUT ${generated_files}
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COMMAND protobuf::protoc
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ARGS --cpp_out ${CMAKE_CURRENT_BINARY_DIR} -I ${CMAKE_CURRENT_SOURCE_DIR} ${proto_file_abs}
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COMMENT "Generating ${generated_files} from ${proto_file}"
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VERBATIM
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)
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endforeach()
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endif()
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#Executable setup
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set(executable_name ${example}_cpp)
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add_executable(${executable_name} ${${example}_SRCS} ${${example}_PROTOS})
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if(protobuf_MODULE_COMPATIBLE) #Legacy mode
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target_include_directories(${executable_name} PUBLIC ${PROTOBUF_INCLUDE_DIRS})
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target_link_libraries(${executable_name} ${PROTOBUF_LIBRARIES})
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else()
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target_link_libraries(${executable_name} protobuf::libprotobuf)
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endif()
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endforeach()
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