Question

我正在尝试使用Visual Studio 2018和Python 3.7以及swig 3.0.12来简化一个简单的C ++类。我的C ++标题

#ifndef atATObjectH
#define atATObjectH
#include "core/atCoreExporter.h"
#include <string>
//-------------------------------------------------------------------------- 
using std::string;

class AT_CORE ATObject
{
    public:
                                ATObject();
        virtual                 ~ATObject();
        virtual const string    getTypeName() const;
};
#endif

atCoreExporter.h：

#ifndef atCoreExporterH
#define atCoreExporterH

#if defined (_WIN32)
    #if defined(AT_STATIC)
        #define AT_CORE
    #else
        #if defined(AT_EXPORT_CORE)
            #define AT_CORE __declspec(dllexport)
        #else
            #define AT_CORE __declspec(dllimport)
        #endif
    #endif
#else
    #define AT_CORE
#endif

#endif

我创建了一个定义了 AT_EXPORT_CORE 的DLL。

我使用CMake生成swigged pyd模块。这是接口文件：

// atexplorer.i
%include "std_string.i"
%include "windows.i"

%module atexplorer
%{
#include "atATObject.h"
%}


//Expose class ATObject to Python
%include "atATObject.h"

这是CMake文件

FIND_PACKAGE(SWIG REQUIRED)
INCLUDE(${SWIG_USE_FILE})
FIND_PACKAGE(PythonLibs)
INCLUDE_DIRECTORIES(${PYTHON_INCLUDE_PATH})
INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR})
SET(CMAKE_SWIG_FLAGS "")

SET_SOURCE_FILES_PROPERTIES(atexplorer.i PROPERTIES CPLUSPLUS ON)

SWIG_ADD_LIBRARY(atexplorer LANGUAGE python SOURCES atexplorer.i)
INCLUDE_DIRECTORIES(
.
${ATAPI_ROOT}
${ATAPI_ROOT}/source
${ATAPI_ROOT}/source/core
)

link_directories(${LIBRARY_OUTPUT_PATH})

SWIG_LINK_LIBRARIES (atexplorer
    atCore
    ${PYTHON_LIBRARIES}
)

SET(ATEXPLORER_PACKAGE_DIR site-package)

SET(python_files_path ${CMAKE_BINARY_DIR}/wrappers/python/atexplorer)

INSTALL(
    TARGETS _atexplorer
    DESTINATION ${ATEXPLORER_PACKAGE_DIR}
    COMPONENT python_module
)

INSTALL(
    FILES ${python_files_path}/atexplorer.py __init__.py
    DESTINATION ${ATEXPLORER_PACKAGE_DIR}
    COMPONENT python_module
)

我遇到的问题是导出/导入宏。上面的接口文件无法编译，我从生成的SWIG代码中看到了这样的编译错误

AT_CORE * temp;
temp  = reinterpret_cast< AT_CORE * >(argp);
ATObject = *temp;

其中AT_CORE是上面atCoreExporter.h中定义的导出/导入宏。

什么是正确的解决方案来解决这个问题？

Answer 1

在使用宏之前，请确保swig接口文件包含宏头。我可以通过在.i文件中添加“％include”来解决此问题。

// atexplorer.i
%include "std_string.i"
%include "windows.i"

%module atexplorer
%{
#include "atATObject.h"
%}

//Expose class ATObject to Python
%include "atCoreExporter.h"
%include "atATObject.h"

SWIG和Windows导出宏

1 个答案: