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port.h
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port.h
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/*
* port.h
* kirk johnson
* september 1995
*
* Copyright (C) 1989, 1990, 1993-1995, 1999 Kirk Lauritz Johnson
*
* Parts of the source code (as marked) are:
* Copyright (C) 1989, 1990, 1991 by Jim Frost
* Copyright (C) 1992 by Jamie Zawinski <[email protected]>
*
* Permission to use, copy, modify and freely distribute xearth for
* non-commercial and not-for-profit purposes is hereby granted
* without fee, provided that both the above copyright notice and this
* permission notice appear in all copies and in supporting
* documentation.
*
* Unisys Corporation holds worldwide patent rights on the Lempel Zev
* Welch (LZW) compression technique employed in the CompuServe GIF
* image file format as well as in other formats. Unisys has made it
* clear, however, that it does not require licensing or fees to be
* paid for freely distributed, non-commercial applications (such as
* xearth) that employ LZW/GIF technology. Those wishing further
* information about licensing the LZW patent should contact Unisys
* directly at ([email protected]) or by writing to
*
* Unisys Corporation
* Welch Licensing Department
* M/S-C1SW19
* P.O. Box 500
* Blue Bell, PA 19424
*
* The author makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*
* THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, INDIRECT
* OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _PORT_H_
#define _PORT_H_
/* Allow prototypes throughout */
#if __STDC__
#define _P(x) x
#else
#define _P(x) ()
#endif
/* Allow use of "const" */
#if !defined(__GNUC__)
#ifndef const
#define const
#endif
#endif
/* Allow use of GNU's __attribute__((noreturn)) */
#if __GNUC__ > 1
#define _noreturn __attribute__((noreturn))
#else
#define _noreturn
#endif
#endif