[src/trunk]: src/sys/net PR/48901: Fail at compile time when trying to compil...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/178d0ee558c1
branches:  trunk
changeset: 796624:178d0ee558c1
user:      christos <christos%NetBSD.org@localhost>
date:      Thu Jun 12 16:43:09 2014 +0000

description:
PR/48901: Fail at compile time when trying to compile stf without inet6,
and print an explanatory message.

diffstat:

 sys/net/if_stf.c |  7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diffs (23 lines):

diff -r d092ce251dd5 -r 178d0ee558c1 sys/net/if_stf.c
--- a/sys/net/if_stf.c  Thu Jun 12 15:13:44 2014 +0000
+++ b/sys/net/if_stf.c  Thu Jun 12 16:43:09 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_stf.c,v 1.79 2014/06/05 23:48:16 rmind Exp $        */
+/*     $NetBSD: if_stf.c,v 1.80 2014/06/12 16:43:09 christos Exp $     */
 /*     $KAME: if_stf.c,v 1.62 2001/06/07 22:32:16 itojun Exp $ */
 
 /*
@@ -75,9 +75,12 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_stf.c,v 1.79 2014/06/05 23:48:16 rmind Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_stf.c,v 1.80 2014/06/12 16:43:09 christos Exp $");
 
 #include "opt_inet.h"
+#ifndef INET6
+       #error "pseudo-device stf requires options INET6"
+#endif
 
 #include <sys/param.h>
 #include <sys/systm.h>