platform/sdl: add check for missing hint defines

engine/client/in_touch.c

@@ -1087,7 +1087,7 @@ void Touch_Init( void )
 #if SDL_VERSION_ATLEAST( 2, 0, 10 )
 	SDL_SetHint( SDL_HINT_MOUSE_TOUCH_EVENTS, "0" );
 	SDL_SetHint( SDL_HINT_TOUCH_MOUSE_EVENTS, "0" );
-#else
+#elif defined(SDL_HINT_ANDROID_SEPARATE_MOUSE_AND_TOUCH)
 	SDL_SetHint( SDL_HINT_ANDROID_SEPARATE_MOUSE_AND_TOUCH, "1" );
 #endif
 

engine/platform/sdl/vid_sdl.c

@@ -1015,8 +1015,12 @@ qboolean R_Init_Video( const int type )
 	refState.desktopBitsPixel = 16;
 #endif
 
+#ifdef SDL_HINT_QTWAYLAND_WINDOW_FLAGS
 	SDL_SetHint( SDL_HINT_QTWAYLAND_WINDOW_FLAGS, "OverridesSystemGestures" );
+#endif
+#ifdef SDL_HINT_QTWAYLAND_CONTENT_ORIENTATION
 	SDL_SetHint( SDL_HINT_QTWAYLAND_CONTENT_ORIENTATION, "landscape" );
+#endif
 
 #if SDL_VERSION_ATLEAST( 2, 0, 0 ) && !XASH_WIN32
 	SDL_SetHint( "SDL_VIDEO_X11_XRANDR", "1" );