Index: PAMmodule.c
===================================================================
--- PAMmodule.c
+++ PAMmodule.c	2013-02-22 08:37:06.332678430 +0100
@@ -7,12 +7,15 @@
  * Released under GNU LGPL version 2.1.
  */
 
+ #define _GNU_SOURCE 1
+
 static char revision[] = "$Id: PAMmodule.c,v 1.3 2007/04/18 03:55:11 rob Exp $";
 
 #include <security/pam_appl.h>
 #include <security/pam_misc.h>
 #include <Python.h>
 #include <stdio.h>
+#include <string.h>
 #include <dlfcn.h>
 
 static PyObject *PyPAM_Error;