Question

我有2个C ++类，我试图通过boost将其导出到python。下面是boost python模块：

#include "/path/to/header.h"
namespace bp = boost::python;

BOOST_PYTHON_MODULE(module){
    bp::class_< metadata >( "metadata" )    
        .def_readwrite( "id", &metadata::id )    
        .def_readwrite( "status", &metadata::status );

    bp::class_< device >( "device" )    
        .def( 
            "deviceConnect"
            , (bool (*)( ::metadata,bool const ))( &::device::deviceConnect )
            , ( bp::arg("meta"), bp::arg("verbose") ) )    
        .def( 
            "deviceStatus"
            , (bool (*)( ::metadata,::std::string const,bool const ))( &::device::deviceStatus )
            , ( bp::arg("meta"), bp::arg("id"), bp::arg("verbose") ) )        
        .staticmethod( "deviceConnect" )    
        .staticmethod( "deviceStatus" );
}

这两个类是设备和元数据，它们都在包含的标头中定义。我使用下面的cmakelists.txt构建代码，并输出一个我试图导入到python脚本中的SO文件。

project(device_pylib)

  # Find default python libraries and interpreter
  find_package (Python3 COMPONENTS Interpreter Development )
  find_package(Boost 1.65.1 COMPONENTS python3 )

  include_directories(${Boost_INCLUDE_DIR} ${Python3_INCLUDE_DIRS})
  link_directories(${Boost_LIBRARY_DIRS})

  # Build and link the pylib_auto module
  
  add_library(device SHARED /path/to/boost/module.cpp)

  target_link_libraries(device ${Boost_LIBRARIES} ${Python3_LIBRARIES})

  add_dependencies(device Boost::python3)

  # Tweaks the name of the library to match what Python expects

  set_target_properties(device PROPERTIES SUFFIX .so)
  set_target_properties(device PROPERTIES PREFIX "")

一切正常，并且SO文件正确构建。但是，当我像这样将其导入到我的python脚本中时：

from module import device

一旦我运行python脚本，它就会给我以下错误：

ImportError: /path/to/shared/object/module.so: undefined symbol: _ZN6device12deviceStatusE8metadataNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEb

我非常确定这与将对象从元数据类传递到设备类的成员函数有关。每当我将它们从函数原型中删除时，它就可以正常运行。在上述配置中我做错什么了吗？

未定义符号导入错误Boost Python

0 个答案: