--- configure.ac.orig	2023-08-21 15:51:12 UTC
+++ configure.ac
@@ -99,9 +99,9 @@ temp_CXXFLAGS="$CXXFLAGS"
 temp_LIBS="$LIBS"
 temp_CFLAGS="$CFLAGS"
 temp_CXXFLAGS="$CXXFLAGS"
-sdl_enabled=""
-SDL_VERSION=1.2.0
-AM_PATH_SDL($SDL_VERSION,
+sdl_enabled="yes"
+SDL_VERSION=2.1.0
+AM_PATH_SDL2($SDL_VERSION,
     [sdl_enabled="yes"],
     AC_MSG_WARN([*** SDL version $SDL_VERSION not found! Omitting sdl layer.])
     )