c++ - LNK2019 当包含 asio header 时，使用 cmake 生成的解决方案

Question

我正在尝试使用 cmake 和 boost 库将一个大项目从 gcc (Linux) 移植到 msvc (windows)。

该项目在 gcc 上编译和运行良好，但在 msvc 上它返回以下错误:

Dyna.obj : error LNK2019: unresolved external symbol "void __cdecl boost::throw_exception(class std::exception const &)" (?throw_exception@boost@@YAXABVexception@std@@@Z) referenced in function "void __cdecl boost::asio::detail::do_throw_error(class boost::system::error_code const &,char const *)" (?do_throw_error@detail@asio@boost@@YAXABVerror_code@system@3@PBD@Z)

我尝试使用 boost asio 运行一个简单的项目，它成功了，理论上排除了 boost 构建问题。

CMakeLists.txt如下:(将感兴趣的部分分开)

    .
    .
    .
IF(WIN32)
          # Flags para garantir a compilação em windows
          SET(CMAKE_CXX_COMPILER icpl)
          SET(TPN_WIN32 "/D WIN32")
          SET(TPN_WIN32_LIB ws2_32.lib odbc32.lib odbccp32.lib)
          SET(CMAKE_EXE_LINKER_FLAGS /NODEFAULTLIB:LIBC;LIBCMT)

    ENDIF(WIN32)

    # Comando para se livrar de warning sobre o caminho da library pthread
    IF(COMMAND cmake_policy)
      cmake_policy(SET CMP0003 NEW)
    ENDIF(COMMAND cmake_policy)

    # Configuracao do TPN REALTIME
    # === inicio ===
    IF (REALTIME_YES)
      MESSAGE ("[TPN] REALTIME ENABLED")
      set(Boost_ADDITIONAL_VERSIONS "1.45.0")
      set(Boost_USE_MULTITHREAD ON)
      set(Boost_USE_STATIC_LIBS ON)
      FIND_PACKAGE( Boost "1.45.0" COMPONENTS system filesystem serialization program_options regex thread date_time REQUIRED)
      FIND_PACKAGE( Threads REQUIRED )

      set(HYDRO_CXX_FLAGS "-DREALTIME -DJOYSTICK")
      set(HYDRO_CXX_LFLAGS ${Boost_LIBRARIES})

      INCLUDE_DIRECTORIES(hydro)


       INCLUDE_DIRECTORIES(${Boost_INCLUDE_DIR})
        ENDIF (REALTIME_YES)
        # ===  final ===
        .
        .
        .

    TARGET_LINK_LIBRARIES(Dyna
      tpn
      preadyn
      ${WHERE_PREA3D}
      ${WHERE_WAMIT_IO}
      ${WHERE_WAMIT_CONVERTER}
      ${WHERE_TECLINE}
      ${HYDRO_CXX_LFLAGS}
      ${TPN_WIN32_LIB}
    )

提前致谢

Answer 1

尝试将标志“/EHsc”添加到 cmake 中的 TPN_WIN32 变量中。MSVC 似乎没有抛出异常，您需要在 vcproj 中启用它。