SG_BEGIN_DECL()
+/********************************** Configuration of MC **************************************/
+extern int _sg_do_model_check;
+extern int _sg_mc_checkpoint;
+extern char* _sg_mc_property_file;
+extern int _sg_mc_timeout;
+extern int _sg_mc_max_depth;
+extern int _sg_mc_visited;
+
extern char*_surf_mc_property_file; /* fixme: better location? */
extern xbt_dynar_t mc_heap_comparison_ignore;