On 2012-10-22 11:55, Paul Volkov wrote:
I am trying to compile an extension module with C++ Builder 6 for Python 3.3.
I converted python33.lib using coff2omf.exe and added this library
into my project.
I wonder why I get this error message while building:
[Linker Error] Unresolved external '_PyModule_Create2TraceRefs'
referenced from 'D:\WORK\FROMAGE\OUT\ROSE_UNIT.OBJ'
My source file:
//---------------------------------------------------------------------------
#include <Python.h>
#include <windows.h>
#pragma argsused
It's a Python module with its own initialiser, so you don't need this:
BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fwdreason, LPVOID lpvReserved)
{
return 1;
}
You don't need to export this function because it's listed in the
module's function table:
static PyObject* __declspec(dllexport) testik(PyObject* self, PyObject* args)
{
Returning NULL says that an exception was raised. You should set the
exception.
return NULL;
}
static PyMethodDef FundRoseMethods[] = {
{"testik", testik, METH_VARARGS, "perform a test"},
{NULL, NULL, 0, NULL}
};
static struct PyModuleDef FundRoseModule = {
PyModuleDef_HEAD_INIT,
"FundRose",
NULL,
-1,
FundRoseMethods
};
PyMODINIT_FUNC
PyInit_FundRose(void)
{
return PyModule_Create(&FundRoseModule);
}
//---------------------------------------------------------------------------
By the way, the recommendation is for module names to be lowercase with
underscores, so "fund_rose" instead of "FundRose".
Try this code:
#include <Python.h>
#include <windows.h>
#pragma argsused
static PyObject* testik(PyObject* self, PyObject* args)
{
PyErr_SetString(PyExc_RuntimeError, "testik exception");
return NULL;
}
static PyMethodDef FundRoseMethods[] = {
{"testik", testik, METH_VARARGS, "perform a test"},
{NULL, NULL, 0, NULL}
};
static struct PyModuleDef FundRoseModule = {
PyModuleDef_HEAD_INIT,
"FundRose",
NULL,
-1,
FundRoseMethods
};
PyMODINIT_FUNC PyInit_FundRose(void) {
return PyModule_Create(&FundRoseModule);
}
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