--- ray/src/rt/persist.c	1993/02/10 11:02:20	2.7
+++ ray/src/rt/persist.c	1993/03/03 09:07:52	2.8
@@ -212,4 +212,8 @@ writerr:
 	error(SYSTEM, "write error in io_process");
 }
 
+#else
+
+pfclean() {}
+
 #endif