-FILE *vcg_open (ir_graph *irg, const char * suffix1, const char *suffix2);
-FILE *vcg_open_name (const char *name, const char *suffix);
-void dump_vcg_header(FILE *F, const char *name, const char *orientation);
+FILE *vcg_open(const ir_graph *irg, const char * suffix1, const char *suffix2);
+FILE *vcg_open_name(const char *name, const char *suffix);
+void dump_vcg_header(FILE *F, const char *name, const char *layout, const char *orientation);