+void declare_ddt(void) {
+ gras_datadesc_type_t ddt;
+
+ gras_datadesc_set_const("COLS",COLS);
+ gras_datadesc_set_const("MAX_ROUTESET",MAX_ROUTESET);
+ gras_datadesc_set_const("MAX_LEAFSET",MAX_LEAFSET);
+
+ gras_datadesc_by_symbol(gras_row_t); /* Parse it before */
+ ddt=gras_datadesc_ref("welcome_msg_t*",gras_datadesc_by_symbol(gras_welcome_msg_t));
+ gras_msgtype_declare("welcome",ddt);
+}