--- configure.ac.orig	2015-01-06 01:34:32.000000000 +1100
+++ configure.ac	2023-01-18 17:56:37.000000000 +1100
@@ -226,6 +226,8 @@
 #include <stdio.h>
 #include <unistd.h>
 #include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
 
 int
 main(int argc, char **argv)