From b681d85d5f0531582f4ec22e67840ead78e845e6 Mon Sep 17 00:00:00 2001
From: Peter Veenstra <qbix79@users.sourceforge.net>
Date: Fri, 23 Mar 2018 08:54:24 +0000
Subject: [PATCH] fix compilation on machines that have X11 libraries
 installed, but use an sdl without X11.

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@4087
---
 src/gui/sdl_mapper.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/gui/sdl_mapper.cpp b/src/gui/sdl_mapper.cpp
index 136e979a..360c36bf 100644
--- a/src/gui/sdl_mapper.cpp
+++ b/src/gui/sdl_mapper.cpp
@@ -2459,6 +2459,8 @@ void MAPPER_StartUp(Section * sec) {
 		sdlkey_map[0x41]=SDLK_KP6;
 #elif !defined (WIN32) /* => Linux & BSDs */
 		bool evdev_input = false;
+#ifdef SDL_VIDEO_DRIVER_X11
+//SDL needs to be compiled to use it, else the next makes no sense.
 #ifdef C_X11_XKB
 		SDL_SysWMinfo info;
 		SDL_VERSION(&info.version);
@@ -2477,6 +2479,7 @@ void MAPPER_StartUp(Section * sec) {
 			XkbFreeClientMap(desc,0,True);
 			}
 		}
+#endif
 #endif
 		if (evdev_input) {
 			sdlkey_map[0x67]=SDLK_UP;