dnl CF__XOPEN_SOURCE_HEAD version: 1 updated: 2022/09/10 15:17:03
dnl ---------------------
dnl headers to include when test-compiling for _XOPEN_SOURCE check
define([CF__XOPEN_SOURCE_HEAD],
[
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
])
