external/bsd/libbind/dist/port/aux3/include/sys/cdefs.h

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (c) 1991, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Berkeley Software Design, Inc.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  *
  38  *      @(#)cdefs.h     8.7 (Berkeley) 1/21/94
  39  */
  40
  41 #ifndef _CDEFS_H_
  42 #define _CDEFS_H_
  43
  44 /* POSIX.2 feature test macro: enable POSIX.1 and/or more */
  45 #if _POSIX_C_SOURCE == 1 || _POSIX_C_SOURCE == 2
  46 #define _POSIX_SOURCE
  47 #endif
  48
  49 #if defined(_POSIX_SOURCE) || defined(__STRICT_ANSI__)
  50 #define _ANSI_SOURCE
  51 #endif
  52
  53 #if defined(__cplusplus)
  54 #define __BEGIN_DECLS   extern "C" {
  55 #define __END_DECLS     };
  56 #else
  57 #define __BEGIN_DECLS
  58 #define __END_DECLS
  59 #endif
  60
  61 /*
  62  * The __CONCAT macro is used to concatenate parts of symbol names, e.g.
  63  * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
  64  * The __CONCAT macro is a bit tricky -- make sure you don't put spaces
  65  * in between its arguments.  __CONCAT can also concatenate double-quoted
  66  * strings produced by the __STRING macro, but this only works with ANSI C.
  67  */
  68 #if defined(__STDC__) || defined(__cplusplus)
  69 #define __P(protos)     protos          /* full-blown ANSI C */
  70 #define __CONCAT(x,y)   x ## y
  71 #define __STRING(x)     #x
  72
  73 #define __const         const           /* define reserved names to standard */
  74 #define __signed        signed
  75 #define __volatile      volatile
  76 #if defined(__cplusplus)
  77 #define __inline        inline          /* convert to C++ keyword */
  78 #else
  79 #ifndef __GNUC__
  80 #define __inline                        /* delete GCC keyword */
  81 #endif /* !__GNUC__ */
  82 #endif /* !__cplusplus */
  83
  84 #else   /* !(__STDC__ || __cplusplus) */
  85 #define __P(protos)     ()              /* traditional C preprocessor */
  86 #define __CONCAT(x,y)   x/**/y
  87 #define __STRING(x)     "x"
  88
  89 #ifndef __GNUC__
  90 #define __const                         /* delete pseudo-ANSI C keywords */
  91 #define __inline
  92 #define __signed
  93 #define __volatile
  94 /*
  95  * In non-ANSI C environments, new programs will want ANSI-only C keywords
  96  * deleted from the program and old programs will want them left alone.
  97  * When using a compiler other than gcc, programs using the ANSI C keywords
  98  * const, inline etc. as normal identifiers should define -DNO_ANSI_KEYWORDS.
  99  * When using "gcc -traditional", we assume that this is the intent; if
 100  * __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone.
 101  */
 102 #ifndef NO_ANSI_KEYWORDS
 103 #define const                           /* delete ANSI C keywords */
 104 #define inline
 105 #define signed
 106 #define volatile
 107 #endif
 108 #endif  /* !__GNUC__ */
 109 #endif  /* !(__STDC__ || __cplusplus) */
 110
 111 /*
 112  * GCC1 and some versions of GCC2 declare dead (non-returning) and
 113  * pure (no side effects) functions using "volatile" and "const";
 114  * unfortunately, these then cause warnings under "-ansi -pedantic".
 115  * GCC2 uses a new, peculiar __attribute__((attrs)) style.  All of
 116  * these work for GNU C++ (modulo a slight glitch in the C++ grammar
 117  * in the distribution version of 2.5.5).
 118  */
 119 #if !defined(__GNUC__) || __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5)
 120 #define __attribute__(x)        /* delete __attribute__ if non-gcc or gcc1 */
 121 #if defined(__GNUC__) && !defined(__STRICT_ANSI__)
 122 #define __dead          __volatile
 123 #define __pure          __const
 124 #endif
 125 #endif
 126 /* The following lines were added for newer versions of GNU C
 127  *   Ed Lewis - Sept 1996 lewis@tis.com
 128  */
 129 #if __GNUC__ == 2 &&  __GNUC_MINOR__ >= 5 || __GNUC__ >= 3
 130 #define __dead
 131 #define __dead2     __attribute__((noreturn))
 132 #define __pure
 133 #define __pure2     __attribute__((const))
 134 #endif
 135
 136
 137 /* Delete pseudo-keywords wherever they are not available or needed. */
 138 #ifndef __dead
 139 #define __dead
 140 #define __pure
 141 #endif
 142
 143 #endif /* !_CDEFS_H_ */