--- st_wrap.c.orig	2003-01-25 17:33:00.000000000 +1100
+++ st_wrap.c	2022-07-01 14:42:09.000000000 +1000
@@ -542,6 +542,7 @@ SWIGCLASS_STATIC int swig_magic_readonly
 #ifdef __cplusplus
 extern "C" {
 #endif
+#include "st.h"
 XS(_wrap_ediff) {
     char _swigmsg[SWIG_MAX_ERRMSG] = "";
     const char *_swigerr = _swigmsg;