-#define _GNU_SOURCE
+#include "config.h"
#include <stdio.h>
#include <ccan/tap/tap.h>
#include <setjmp.h>
#include <ccan/opt/helpers.c>
#include <ccan/opt/opt.c>
#include <ccan/opt/usage.c>
+#include <ccan/opt/parse.c>
static void reset_options(void)
{