-#if defined(_POSIX_VERSION) || defined(DIRENT)
-#include <dirent.h>
-#ifdef direct
-#undef direct
-#endif /* direct */
-#define direct dirent
-#define DP_NAMELEN(x) strlen((x)->d_name)
-#endif /* _POSIX_VERSION or DIRENT */
-#if !defined(_POSIX_VERSION) && !defined(DIRENT) && defined(BSD42)
-#include <sys/dir.h>
-#define DP_NAMELEN(x) (x)->d_namlen
-#endif /* not _POSIX_VERSION and BSD42 */
-#ifdef __MSDOS__
-#include "msd_dir.h"
-#define DP_NAMELEN(x) (x)->d_namlen
-#define direct dirent
-#endif
-#if defined(USG) && !defined(_POSIX_VERSION) && !defined(DIRENT)
-#include <ndir.h>
-#define DP_NAMELEN(x) strlen((x)->d_name)
-#endif /* USG and not _POSIX_VERSION and not DIRENT */
-