/*
 *	fhist - file history and comparison tools
 *	Copyright (C) 1994, 1998, 2004 Peter Miller;
 *	All rights reserved.
 *
 *	This program is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU General Public License as published by
 *	the Free Software Foundation; either version 2 of the License, or
 *	(at your option) any later version.
 *
 *	This program 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 General Public License for more details.
 *
 *	You should have received a copy of the GNU General Public License
 *	along with this program; if not, write to the Free Software
 *	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
 *
 * MANIFEST: insulate against <unistd.h> presence or absence
 */

#ifndef COMMON_AC_UNISTD_H
#define COMMON_AC_UNISTD_H

#include <config.h>

/*
 * Need to define _BSD_SOURCE on Linux to get prototypes for the symlink
 * and readlink functions.
 */
#ifdef __linux__
#ifndef _BSD_SOURCE
#define _BSD_SOURCE 1
#endif
#ifndef __USE_BSD
#define __USE_BSD 1
#endif
#endif

#ifdef HAVE_UNISTD_H
#include <ac/sys/types.h>
#include <unistd.h>
#endif

#ifndef SEEK_SET
#define SEEK_SET 0
#endif
#ifndef F_OK
#define F_OK 0
#endif

#endif /* COMMON_AC_UNISTD_H */