You extension module is called _spam in your setup.py so the function
should be init_spam.
On Tue, 18 Aug 2015 22:50 garyr <ga...@fidalgo.net> wrote:
> Not according to the Python documentation.
>
> See the Python documentation Extending and Embedding the Python Interperter
> / Extending Python with C or C++ /
> A Simple Example:
>
> The method table must be passed to the interpreter in the module’s
> initialization function. The initialization function must be named
> initname(),
> where name is the name of the module, and should be the only non-static
> item
> defined in the module file:
>
> PyMODINIT_FUNC
> initspam(void)
> {
> (void) Py_InitModule("spam", SpamMethods);
> }
>
> I tried doing that and it crashed Python when I imported _spam
>
> ----- Original Message -----
> From: "Oscar Benjamin" <oscar.j.benja...@gmail.com>
> To: "garyr" <ga...@fidalgo.net>; <distutils-sig@python.org>
> Sent: Tuesday, August 18, 2015 12:51 PM
> Subject: Re: [Distutils] (no subject)
>
>
> > Should the function be called init_spam rather than initspam?
> >
> >
> > On Tue, 18 Aug 2015 19:19 garyr <ga...@fidalgo.net> wrote:
> >
> > I posted this on comp.lang.python but received no replies.
> >
> > I tried building the spammodule.c example described in the documentation
> > section "Extending Python with C or C++." As shown the code compiles OK
> but
> > generates a link error:
> >
> > LINK : error LNK2001: unresolved external symbol init_spam
> > build\temp.win32-2.7\Release\_spam.lib : fatal error LNK1120: 1
> unresolved
> > externals
> >
> > I tried changing the name of the initialization function spam_system to
> > init_spam and removed the static declaration. This compiled and linked
> > without errors but generated a system error when _spam was imported.
> >
> > I'm using Python 2.7.9. The same error occurs with Python 2.6.9.
> >
> > The code and the setup.py file are shown below. What do I need to do to
> fix
> > this?
> >
> > setup.py:
> >
> -----------------------------------------------------------------------------
> > from setuptools import setup, Extension
> >
> > setup(name='spam',
> > version='0.1',
> > description='test module',
> > ext_modules=[Extension('_spam', ['spammodule.c'],
> > include_dirs=[C:\Documents and
> > Settings\Owner\Miniconda\include],
> > )],
> > )
> >
> > sammodule.c
> > --------------------------------------------------
> > #include <python.h>
> > static PyObject *SpamError;
> >
> > static PyObject *
> > spam_system(PyObject *self, PyObject *args)
> > {
> > const char *command;
> > int sts;
> >
> > if (!PyArg_ParseTuple(args, "s", &command))
> > return NULL;
> > sts = system(command);
> > if (sts < 0) {
> > PyErr_SetString(SpamError, "System command failed");
> > return NULL;
> > }
> > return PyLong_FromLong(sts);
> > }
> >
> > static PyMethodDef SpamMethods[] = {
> >
> > {"system", spam_system, METH_VARARGS,
> > "Execute a shell command."},
> > {NULL, NULL, 0, NULL} /* Sentinel */
> > };
> >
> > PyMODINIT_FUNC
> > initspam(void)
> > {
> > PyObject *m;
> >
> > m = Py_InitModule("spam", SpamMethods);
> > if (m == NULL)
> > return;
> >
> > SpamError = PyErr_NewException("spam.error", NULL, NULL);
> > Py_INCREF(SpamError);
> > PyModule_AddObject(m, "error", SpamError);
> > }
> >
> >
> >
> >
> >
> >
> >
> > _______________________________________________
> > Distutils-SIG maillist - Distutils-SIG@python.org
> > https://mail.python.org/mailman/listinfo/distutils-sig
> >
>
>
>
_______________________________________________
Distutils-SIG maillist - Distutils-SIG@python.org
https://mail.python.org/mailman/listinfo/distutils-sig
