#ifndef __OpenBSD__
#ifndef __NetBSD__
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE 600
#endif
#endif
#endif
/*#define _XOPEN_SOURCE_EXTENDED 1*/
#ifndef _BSD_SOURCE
#define _BSD_SOURCE 1
#endif
#ifdef __sun
#ifndef __EXTENSIONS__
#define __EXTENSIONS__ 1
#endif
#endif
#ifndef _LARGEFILE_SOURCE
#define _LARGEFILE_SOURCE
#endif
#ifndef _FILE_OFFSET_BITS
#define _FILE_OFFSET_BITS 64
#endif
#ifndef _LARGE_FILES
#define _LARGE_FILES 1
#endif