diff -bu a/source/libs/luajit/LuaJIT-src/src/lj_str.c  b/source/libs/luajit/LuaJIT-src/src/lj_str.c 
--- a/source/libs/luajit/LuaJIT-src/src/lj_str.c
+++ b/source/libs/luajit/LuaJIT-src/src/lj_str.c
@@ -310,6 +310,7 @@
   return s;  /* Return newly interned string. */
 }
 
+int luajittex_choose_hash_function = 0 ;
 /* Intern a string and return string object. */
 GCstr *lj_str_new(lua_State *L, const char *str, size_t lenx)
 {
