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author | Roland McGrath <roland@gnu.org> | 1995-02-18 01:27:10 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 1995-02-18 01:27:10 +0000 |
commit | 28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch) | |
tree | 15f07c4c43d635959c6afee96bde71fb1b3614ee /misc/sys/cdefs.h | |
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initial import
Diffstat (limited to 'misc/sys/cdefs.h')
-rw-r--r-- | misc/sys/cdefs.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h new file mode 100644 index 0000000000..8336aa4038 --- /dev/null +++ b/misc/sys/cdefs.h @@ -0,0 +1,104 @@ +/* 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 */ |