From 8111d0287821a9b2a2faefbf0be1f345dbe93222 Mon Sep 17 00:00:00 2001
From: Antony Pavlov <antonynpavlov@gmail.com>
Date: Tue, 29 Oct 2013 08:36:31 +0400
Subject: [PATCH] vl: fix build when configured with no graphic support
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The following error occurs when building with no graphic output support:

  vl.c: In function ‘main’:
  vl.c:2829:19: error: variable ‘ds’ set but not used [-Werror=unused-but-set-variable]
       DisplayState *ds;
                     ^
  cc1: all warnings being treated as errors

To reproduce this issue, just run:

  $ ./configure \
      --disable-curses \
      --disable-sdl \
      --disable-cocoa \
      --disable-gtk \
      --disable-vnc \
      --enable-werror
  $ make vl.o

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
---
 vl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/vl.c b/vl.c
index 4ad15b808c..b5ec266d5f 100644
--- a/vl.c
+++ b/vl.c
@@ -4267,6 +4267,7 @@ int main(int argc, char **argv, char **envp)
     /* init local displays */
     switch (display_type) {
     case DT_NOGRAPHIC:
+        (void)ds;	/* avoid warning if no display is configured */
         break;
 #if defined(CONFIG_CURSES)
     case DT_CURSES: