db.1.85/PORT/include/cdefs.h

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