--- common/common.h.orig	Fri May  7 02:04:30 1993
+++ common/common.h	Mon Dec 27 20:53:08 1999
@@ -92,7 +92,9 @@
 /* definitions missing from many system headers */
 extern int errno;
-extern int sys_nerr;
+extern const int sys_nerr;
+#ifndef __FreeBSD__
 extern char *sys_errlist[];
+#endif
 
 #if !HAVE_STRDUP
 #ifndef ANSI_PROTOTYPES
