--- ./bc/scan.l.orig	Mon May 13 10:51:42 2002
+++ ./bc/scan.l	Mon May 13 10:52:08 2002
@@ -143,7 +143,7 @@
 
 /* Definitions for readline access. */
 extern FILE *rl_instream;
-_PROTOTYPE(char *readline, (char *));
+/* _PROTOTYPE(char *readline, (char *)); */
 
 /* rl_input puts upto MAX characters into BUF with the number put in
    BUF placed in *RESULT.  If the yy input file is the same as