Index: ncgen3/ncgeny.c
--- ncgen3/ncgeny.c.orig
+++ ncgen3/ncgeny.c
@@ -84,8 +84,6 @@ static char SccsId[] = "$Id: ncgen.y,v 1.34 2010/03/31
 #include        "ncgen.h"
 #include	"genlib.h"	/* for grow_darray() et al */
 
-extern int fileno(FILE*);
-
 typedef struct Symbol {		/* symbol table entry */
 	char    	*name;
 	struct Symbol   *next;
