From 4fbed6ad7c93ed9a6a1b8f80b6170aa27c31277e Mon Sep 17 00:00:00 2001
From: bluhm <bluhm@openbsd.org>
Date: Sat, 13 Jul 2024 13:20:44 +0000
Subject: [PATCH] Add condition to ip_gre.c in files.

Use gre condition in conf/files for compiling netinet/ip_gre.c only
if needed.  Remove #if NGRE > 0 from ip_gre.c that caused ramdisk
build to compile an empty C file.

OK kn@ deraadt@; input jsg@
---
 sys/conf/files       | 4 ++--
 sys/netinet/ip_gre.c | 8 +-------
 2 files changed, 3 insertions(+), 9 deletions(-)

diff --git a/sys/conf/files b/sys/conf/files
index 1be0a066e34..a97e3ef225e 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -1,4 +1,4 @@
-#	$OpenBSD: files,v 1.733 2024/06/12 12:54:54 bluhm Exp $
+#	$OpenBSD: files,v 1.734 2024/07/13 13:20:44 bluhm Exp $
 #	$NetBSD: files,v 1.87 1996/05/19 17:17:50 jonathan Exp $
 
 #	@(#)files.newconf	7.5 (Berkeley) 5/10/93
@@ -898,7 +898,7 @@ file netinet/tcp_subr.c
 file netinet/tcp_timer.c
 file netinet/tcp_usrreq.c
 file netinet/udp_usrreq.c
-file netinet/ip_gre.c
+file netinet/ip_gre.c			gre
 file netinet/ip_ipsp.c			ipsec | tcp_signature
 file netinet/ip_spd.c			ipsec | tcp_signature
 file netinet/ip_ipip.c
diff --git a/sys/netinet/ip_gre.c b/sys/netinet/ip_gre.c
index 840852b382a..cb903fa52ed 100644
--- a/sys/netinet/ip_gre.c
+++ b/sys/netinet/ip_gre.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: ip_gre.c,v 1.87 2023/12/15 00:24:56 bluhm Exp $ */
+/*      $OpenBSD: ip_gre.c,v 1.88 2024/07/13 13:20:44 bluhm Exp $ */
 /*	$NetBSD: ip_gre.c,v 1.9 1999/10/25 19:18:11 drochner Exp $ */
 
 /*
@@ -36,10 +36,6 @@
  * This currently handles IPPROTO_GRE, IPPROTO_MOBILE
  */
 
-
-#include "gre.h"
-#if NGRE > 0
-
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/mbuf.h>
@@ -114,5 +110,3 @@ gre_send(struct socket *so, struct mbuf *m, struct mbuf *nam,
 #endif
 	return rip_send(so, m, nam, control);
 }
-
-#endif /* if NGRE > 0 */
-- 
2.20.1