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- /* Copyright (C) 1992, 1993 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
-
- #ifdef __GNU_LIBRARY__
- #include <features.h>
- #endif
-
- #ifdef __GNUC__
-
- #ifndef __P
- #define __P(args) args /* GCC can always grok prototypes. */
- #endif
- #define __DOTS , ...
-
- /* Figure out how to declare functions that (1) depend only on their
- parameters and have no side effects, or (2) don't return. */
-
- /*
- #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || defined(__cplusplus)
- */
- #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5)
- /* Old GCC way. */
- #ifndef __CONSTVALUE
- #define __CONSTVALUE __const__
- #define __CONSTVALUE2
- #endif
- #ifndef __NORETURN
- #define __NORETURN __volatile__
- #define __NORETURN2
- #endif
- #else
- /* New GCC way. */
- #ifndef __CONSTVALUE
- #define __CONSTVALUE
- #if defined(const) || !defined(__STDC__)
- #define __CONSTVALUE2 /* We don't want empty __attribute__ (()). */
- #else
- #define __CONSTVALUE2 __attribute__ ((const))
- #endif
- #endif
- #ifndef __NORETURN
- #define __NORETURN
- #ifdef noreturn
- #define __NORETURN2 /* We don't want empty __attribute__ (()). */
- #else
- #define __NORETURN2 __attribute__ ((noreturn))
- #endif
- #endif
- #endif
-
- #else /* Not GCC. */
-
- #define __inline /* No inline functions. */
- #define __CONSTVALUE /* No idempotent functions. */
- #define __CONSTVALUE2
- #define __NORETURN /* No functions-of-no-return. */
- #define __NORETURN2
-
- #if (defined (__STDC__) && __STDC__) || defined (__cplusplus)
-
- #ifndef __P
- #define __P(args) args
- #endif
- #define __const const
- #define __signed signed
- #define __volatile volatile
- #define __DOTS , ...
-
- #else /* Not ANSI C or C++. */
-
- #ifndef __P
- #define __P(args) () /* No prototypes. */
- #endif
- #define __const /* No ANSI C keywords. */
- #define __signed
- #define __volatile
- #define __DOTS
-
- #endif /* ANSI C or C++. */
-
- #endif /* GCC. */
-
- #if defined (__GNUC__) && __GNUC__ < 2
- /* In GCC version 2, (__extension__ EXPR) will not complain
- about GCC extensions used in EXPR under -ansi or -pedantic. */
- #define __extension__
- #endif
-
- /* 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
- /* __attribute__ uses const. */
- #if 0
- #define const __const
- #endif
- #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
-
- #endif /* sys/cdefs.h */
-