From c79994d8123152dadf097e3400133fe5ca59feb3 Mon Sep 17 00:00:00 2001
From: Arne Schwabe <arne@rfc2549.org>
Date: Tue, 23 May 2017 16:46:36 +0200
Subject: [PATCH] Exit if the FindSDL script finds 2.x instead of 1.x (#4948)

---
 CMakeLists.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f5629bc2d..c13128a8a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -133,6 +133,9 @@ if(Qt5Core_FOUND OR FOX_FOUND)
   find_package("SDL")
   if(SDL_FOUND)
     message(STATUS "SDL Lib: ${SDL_LIBRARY}; Headers: ${SDL_INCLUDE_DIR}; Version: ${SDL_VERSION_STRING}")
+    if (NOT ${SDL_VERSION_STRING} VERSION_LESS "2.0")
+      message(FATAL_ERROR "OpenTX requires SDL 1.x, not 2.x")
+    endif()
   else()
     message(STATUS "SDL not found! Simulator audio, and joystick inputs, will not work.")
   endif()