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/* Copyright (C) 1992, 1993, 1994, 1995 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., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#ifndef _SYS_CDEFS_H
#define _SYS_CDEFS_H 1
#include <features.h>
/* Some user header file might have defined this before. */
#undef __P
#ifdef __GNUC__
#define __P(args) args /* GCC can always grok prototypes. */
#define __DOTS , ...
#else /* Not GCC. */
#define __inline /* No inline functions. */
#if (defined (__STDC__) && __STDC__) || defined (__cplusplus)
#define __P(args) args
#define __const const
#define __signed signed
#define __volatile volatile
#define __DOTS , ...
#else /* Not ANSI C or C++. */
#define __P(args) () /* No prototypes. */
#define __const /* No ANSI C keywords. */
#define __signed
#define __volatile
#define __DOTS
#endif /* ANSI C or C++. */
#endif /* GCC. */
/* For these things, GCC behaves the ANSI way normally,
and the non-ANSI way under -traditional. */
#if defined (__STDC__) && __STDC__
#define __CONCAT(x,y) x ## y
#define __STRING(x) #x
/* This is not a typedef so `const __ptr_t' does the right thing. */
#define __ptr_t void *
typedef long double __long_double_t;
#else
#define __CONCAT(x,y) x/**/y
#define __STRING(x) "x"
#define __ptr_t char *
typedef double __long_double_t;
#endif
/* The BSD header files use the ANSI keywords unmodified. (This means that
old programs may lose if they use the new keywords as identifiers.) We
define them to their __ versions, which are taken care of above. */
#ifdef __USE_BSD
#define const __const
#define signed __signed
#define volatile __volatile
#endif
/* C++ needs to know that types and declarations are C, not C++. */
#ifdef __cplusplus
#define __BEGIN_DECLS extern "C" {
#define __END_DECLS }
#else
#define __BEGIN_DECLS
#define __END_DECLS
#endif
/* GCC2 has various useful declarations that can be made with the
`__attribute__' syntax. All of the ways we use this do fine if
they are omitted for compilers that don't understand it. */
#if !defined (__GNUC__) || __GNUC__ < 2
#define __attribute__(xyz) /* Ignore. */
#endif
#endif /* sys/cdefs.h */
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