path: root/posix/unistd.h

/* Copyright (C) 1991,92,93,94,95,96,97,98,99 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

/*
 *	POSIX Standard: 2.10 Symbolic Constants		<unistd.h>
 */

#ifndef	_UNISTD_H
#define	_UNISTD_H	1

#include <features.h>

__BEGIN_DECLS

/* These may be used to determine what facilities are present at compile time.
   Their values can be obtained at run time from `sysconf'.  */

/* POSIX Standard approved as ISO/IEC 9945-1 as of August, 1988 and
   extended by POSIX-1b (aka POSIX-4) and POSIX-1c (aka POSIX threads).  */
#define	_POSIX_VERSION	199506L

/* These are not #ifdef __USE_POSIX2 because they are
   in the theoretically application-owned namespace.  */

/* POSIX Standard approved as ISO/IEC 9945-2 as of December, 1993.  */
#define	_POSIX2_C_VERSION	199209L

/* The utilities on GNU systems also correspond to this version.  */
#define _POSIX2_VERSION	199209L

/* If defined, the implementation supports the
   C Language Bindings Option.  */
#define	_POSIX2_C_BIND	1

/* If defined, the implementation supports the
   C Language Development Utilities Option.  */
#define	_POSIX2_C_DEV	1

/* If defined, the implementation supports the
   Software Development Utilities Option.  */
#define	_POSIX2_SW_DEV	1

/* If defined, the implementation supports the
   creation of locales with the localedef utility.  */
#define _POSIX2_LOCALEDEF       1

/* X/Open version number to which the library conf