Lib/python/embed.i

//
// embed.i
// SWIG file embedding the Python interpreter in something else.
// This file is deprecated and no longer actively maintained, but it still
// seems to work with Python 2.7.  It doesn't work with Python 3.
//
// This file makes it possible to extend Python and all of its
// built-in functions without having to hack its setup script.
//
// This module provides support for building a new version of the
// Python executable.  This will be necessary on systems that do
// not support shared libraries and may be necessary with C++
// extensions.  This file contains everything you need to build
// a new version of Python from include files and libraries normally
// installed with the Python language.
//
// This module will automatically grab all of the Python modules
// present in your current Python executable (including any special
// purpose modules you have enabled such as Tkinter).   Thus, you
// may need to provide additional link libraries when compiling.
//
// As far as I know, this module is C++ safe.

%wrapper %{
#if !defined(PY_SSIZE_T_CLEAN) && !defined(SWIG_NO_PY_SSIZE_T_CLEAN)
#define PY_SSIZE_T_CLEAN
#endif

#if __GNUC__ >= 7
#pragma GCC diagnostic push
#if defined(__cplusplus) && __cplusplus >=201703L
#pragma GCC diagnostic ignored "-Wregister" /* For python-2.7 headers that use register */
#endif
#endif

#include <Python.h>

#if __GNUC__ >= 7
#pragma GCC diagnostic pop
#endif

#ifdef __cplusplus
extern "C"
#endif
void SWIG_init();  /* Forward reference */

#define _PyImport_Inittab swig_inittab

/* Grab Python's inittab[] structure */

#ifdef __cplusplus
extern "C" {
#endif
#include <config.c>

#undef _PyImport_Inittab

/* Now define our own version of it.
   Hopefully someone does not have more than 1000 built-in modules */

struct _inittab SWIG_Import_Inittab[1000];

static int  swig_num_modules = 0;

/* Function for adding modules to Python */

static void swig_add_module(char *name, void (*initfunc)()) {
	SWIG_Import_Inittab[swig_num_modules].name = name;
	SWIG_Import_Inittab[swig_num_modules].initfunc = initfunc;
	swig_num_modules++;
	SWIG_Import_Inittab[swig_num_modules].name = (char *) 0;
	SWIG_Import_Inittab[swig_num_modules].initfunc = 0;
}

/* Function to add all of Python's built-in modules to our interpreter */

static void swig_add_builtin() {
	int i = 0;
	while (swig_inittab[i].name) {
		swig_add_module(swig_inittab[i].name, swig_inittab[i].initfunc);
		i++;
	}
#ifdef SWIGMODINIT
	SWIGMODINIT
#endif
	/* Add SWIG builtin function */
	swig_add_module(SWIG_name, SWIG_init);
}

#ifdef __cplusplus
}
#endif

#ifdef __cplusplus
extern "C" {
#endif

extern int Py_Main(int, char **);

#ifdef __cplusplus
}
#endif

extern struct _inittab *PyImport_Inittab;

int
main(int argc, char **argv) {
	swig_add_builtin();
	PyImport_Inittab = SWIG_Import_Inittab;
	return Py_Main(argc,argv);
}

%}