Creating a DLL from a wrapped cpp file with SWIG

Question

I am in the process of learning how to use SWIG on Windows.

The following is my c++ code:

 /* File : example.cxx */

 #include \"example.h\"
 #defin         


        

Answer 1

add MS_NO_COREDLL definition at Configuration Properties->C/C++->Preprocessor->Preprocessor Definitions; or add #define MS_NO_COREDLL line before including python.h.

#define MS_NO_COREDLL
#include <Python.h>

Answer 2

SWIG (at least on v3.0) generates the python.h inclusion in the wrapper as follows:

#if defined(_DEBUG) && defined(SWIG_PYTHON_INTERPRETER_NO_DEBUG)
/* Use debug wrappers with the Python release dll */
# undef _DEBUG
# include <Python.h>
# define _DEBUG
#else
# include <Python.h>
#endif

So when compiling a debug version of the wrapper on a Windows platform, we simply need to define the SWIG_PYTHON_INTERPRETER_NO_DEBUG flag to avoid the pyconfig.h file issue mentioned in Ken's answer.

Answer 3

I resolved the missing python27_d.lib by doing the following:

• Copy python27.lib to python27_d.lib
• In pyconfig.h comment out define Py_DEBUG

Answer 4

You can try adding "python27_d.lib" (without quotes) to ignored libs:

Configuration Properties -> Linker -> Input -> Ignore Specific Library

Answer 5

I found out that addind the Python symbols do the Project solves it. Do it like this

I also copied the python27.lib to a file named python27_d.lib

Answer 6

Building the project in Release mode removes the python27_d.lib dependency too; at least it did for my own project.