kc3-lang/SDL

diff --git a/test/testgesture.c b/test/testgesture.c
index 7f766c5..6189f45 100644
--- a/test/testgesture.c
+++ b/test/testgesture.c
@@ -16,6 +16,7 @@
  */
 
 #include "SDL.h"
+#include <stdlib.h> /* for exit() */
 
 #ifdef __EMSCRIPTEN__
 #include <emscripten/emscripten.h>