# define Z_HAVE_UNISTD_H
#endif
-#ifdef Z_HAVE_UNISTD_H
+#if defined(Z_HAVE_UNISTD_H) || _LARGEFILE64_SOURCE == 1
# include <sys/types.h> /* for off_t */
# include <unistd.h> /* for SEEK_* and off_t */
# ifdef VMS
# endif
#endif
-#ifdef _LARGEFILE64_SOURCE
-# include <sys/types.h>
-#endif
-
#ifndef SEEK_SET
# define SEEK_SET 0 /* Seek from beginning of file. */
# define SEEK_CUR 1 /* Seek from current position. */
# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */
#endif
+
#ifndef z_off_t
# define z_off_t long
#endif