[Minor] Add missing macro

diff --git a/contrib/t1ha/t1ha.h b/contrib/t1ha/t1ha.h
index 85deb89711911fb4b71bccbd1978e5cb7f425e2b..c41f5c5296f6eef6fa154f9de8adebb521e0aebd 100644 (file)
--- a/contrib/t1ha/t1ha.h
+++ b/contrib/t1ha/t1ha.h
@@ -42,6 +42,11 @@
 #define T1HA_INCLUDED
 #include "config.h"
 #include <string.h>
+#include <stddef.h>
+
+#ifndef __has_builtin
+#define __has_builtin(x) (0)
+#endif
 
 #ifdef BYTE_ORDER
 #ifndef __ORDER_LITTLE_ENDIAN__