--- lib/regex.h.orig	Sun Jan 18 20:42:26 1998
+++ lib/regex.h	Sun Jan 18 20:42:56 1998
@@ -473,7 +473,7 @@
              unsigned num_regs, regoff_t *starts, regoff_t *ends));
 
 /* 4.2 bsd compatibility.  */
-#ifndef __FreeBSD__
+#if !defined(__FreeBSD__) && !defined(__NetBSD__)
 extern char *re_comp _RE_ARGS ((_CONST_ char *));
 extern int re_exec _RE_ARGS ((_CONST_ char *));
 #endif