workbench/network/common/include/sys/cdefs.h

   1 #ifndef _SYS_CDEFS_H_
   2 #define _SYS_CDEFS_H_
   3 /*
   4  * Copyright 1995-2002, The AROS Development Team. All rights reserved.
   5  * $Id$
   6  *
   7  * <sys/cdefs.h> header file, would you believe it's mostly the same as
   8  * <aros/system.h>, except that here we define all the things that
   9  * BSD/UNIX/POSIX like systems are expecting.
  10  *
  11  * The namespace checks below are
  12  *
  13  * Copyright (c) 1991, 1993
  14  *      The Regents of the University of California.  All rights reserved.
  15  *
  16  * This code is derived from software contributed to Berkeley by
  17  * Berkeley Software Design, Inc.
  18  *
  19  * Redistribution and use in source and binary forms, with or without
  20  * modification, are permitted provided that the following conditions
  21  * are met:
  22  * 1. Redistributions of source code must retain the above copyright
  23  *    notice, this list of conditions and the following disclaimer.
  24  * 2. Redistributions in binary form must reproduce the above copyright
  25  *    notice, this list of conditions and the following disclaimer in the
  26  *    documentation and/or other materials provided with the distribution.
  27  * 3. All advertising materials mentioning features or use of this software
  28  *    must display the following acknowledgement:
  29  *      This product includes software developed by the University of
  30  *      California, Berkeley and its contributors.
  31  * 4. Neither the name of the University nor the names of its contributors
  32  *    may be used to endorse or promote products derived from this software
  33  *    without specific prior written permission.
  34  *
  35  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  36  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  37  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  38  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  39  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  40  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  41  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  42  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  43  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  44  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  45  * SUCH DAMAGE.
  46  *
  47  *      @(#)cdefs.h     8.8 (Berkeley) 1/9/95
  48  * $FreeBSD: src/sys/sys/cdefs.h,v 1.75 2003/07/25 18:40:36 gad Exp $
  49  */
  50
  51 #include <aros/system.h>
  52
  53 #if defined(__STDC__) || defined(__cplusplus)
  54 #define __P(protos)     protos
  55 #else
  56 #define __P(protos)     ()
  57 #endif
  58
  59 #if !defined(__IDSTRING)
  60 #   if defined(__GNUC__) && defined(__ELF__)
  61 #       define __IDSTRING(name,str)         __asm__(".ident\t\"" str "\"")
  62 #   else
  63 #       define __IDSTRING(name,str)         static const char name[] __unused = str
  64 #   endif
  65 #endif
  66
  67 /* Need to protect __RCSID against the host system headers */
  68 #if !defined(__RCSID)
  69 #   define __RCSID(id)  __IDSTRING(rcsid,id)
  70 #endif
  71
  72 /* FreeBSD's, it's basically yet another IDSTRING like thing. */
  73 #define __FBSDID(id)     __IDSTRING(__CONCAT(__rcsid_,__LINE__),id)
  74
  75 /*****************************************************************************
  76     IMPORTANT IMPORTANT IMPORTANT IMPORTANT IMPORTANT etc
  77
  78     If you do not understand what the following code does, then please do
  79     not change it. Basically various standards (POSIX, ISO C, etc) are
  80     very pedantic about what is visible and what is not.
  81
  82     The following code from FreeBSD's cdefs.h basically does all the
  83     standards check. That is where the BSD licenced part comes from above.
  84
  85     This should be compatible with *BSD, and hopefully Linux as well.
  86     Other forms of UNIX might have some more trouble.
  87 *****************************************************************************/
  88
  89 /*-
  90  * POSIX.1 requires that the macros we test be defined before any standard
  91  * header file is included.
  92  *
  93  * Here's a quick run-down of the versions:
  94  *  defined(_POSIX_SOURCE)              1003.1-1988
  95  *  _POSIX_C_SOURCE == 1                1003.1-1990
  96  *  _POSIX_C_SOURCE == 2                1003.2-1992 C Language Binding Option
  97  *  _POSIX_C_SOURCE == 199309           1003.1b-1993
  98  *  _POSIX_C_SOURCE == 199506           1003.1c-1995, 1003.1i-1995,
  99  *                                      and the omnibus ISO/IEC 9945-1: 1996
 100  *  _POSIX_C_SOURCE == 200112           1003.1-2001
 101  *
 102  * In addition, the X/Open Portability Guide, which is now the Single UNIX
 103  * Specification, defines a feature-test macro which indicates the version of
 104  * that specification, and which subsumes _POSIX_C_SOURCE.
 105  *
 106  * Our macros begin with two underscores to avoid namespace screwage.
 107  */
 108
 109 /* Deal with IEEE Std. 1003.1-1990, in which _POSIX_C_SOURCE == 1. */
 110 #if _POSIX_C_SOURCE == 1
 111 #undef _POSIX_C_SOURCE          /* Probably illegal, but beyond caring now. */
 112 #define _POSIX_C_SOURCE         199009
 113 #endif
 114
 115 /* Deal with IEEE Std. 1003.2-1992, in which _POSIX_C_SOURCE == 2. */
 116 #if _POSIX_C_SOURCE == 2
 117 #undef _POSIX_C_SOURCE
 118 #define _POSIX_C_SOURCE         199209
 119 #endif
 120
 121 /* Deal with various X/Open Portability Guides and Single UNIX Spec. */
 122 #ifdef _XOPEN_SOURCE
 123 #if _XOPEN_SOURCE - 0 >= 600
 124 #define __XSI_VISIBLE           600
 125 #undef _POSIX_C_SOURCE
 126 #define _POSIX_C_SOURCE         200112
 127 #elif _XOPEN_SOURCE - 0 >= 500
 128 #define __XSI_VISIBLE           500
 129 #undef _POSIX_C_SOURCE
 130 #define _POSIX_C_SOURCE         199506
 131 #endif
 132 #endif
 133
 134 /*
 135  * Deal with all versions of POSIX.  The ordering relative to the tests above is
 136  * important.
 137  */
 138 #if defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE)
 139 #define _POSIX_C_SOURCE         198808
 140 #endif
 141 #ifdef _POSIX_C_SOURCE
 142 #if _POSIX_C_SOURCE >= 200112
 143 #define __POSIX_VISIBLE         200112
 144 #define __ISO_C_VISIBLE         1999
 145 #elif _POSIX_C_SOURCE >= 199506
 146 #define __POSIX_VISIBLE         199506
 147 #define __ISO_C_VISIBLE         1990
 148 #elif _POSIX_C_SOURCE >= 199309
 149 #define __POSIX_VISIBLE         199309
 150 #define __ISO_C_VISIBLE         1990
 151 #elif _POSIX_C_SOURCE >= 199209
 152 #define __POSIX_VISIBLE         199209
 153 #define __ISO_C_VISIBLE         1990
 154 #elif _POSIX_C_SOURCE >= 199009
 155 #define __POSIX_VISIBLE         199009
 156 #define __ISO_C_VISIBLE         1990
 157 #else
 158 #define __POSIX_VISIBLE         198808
 159 #define __ISO_C_VISIBLE         0
 160 #endif /* _POSIX_C_SOURCE */
 161 #else
 162 /*-
 163  * Deal with _ANSI_SOURCE:
 164  * If it is defined, and no other compilation environment is explicitly
 165  * requested, then define our internal feature-test macros to zero.  This
 166  * makes no difference to the preprocessor (undefined symbols in preprocessing
 167  * expressions are defined to have value zero), but makes it more convenient for
 168  * a test program to print out the values.
 169  *
 170  * If a program mistakenly defines _ANSI_SOURCE and some other macro such as
 171  * _POSIX_C_SOURCE, we will assume that it wants the broader compilation
 172  * environment (and in fact we will never get here).
 173  */
 174 #if defined(_ANSI_SOURCE)       /* Hide almost everything. */
 175 #define __POSIX_VISIBLE         0
 176 #define __XSI_VISIBLE           0
 177 #define __BSD_VISIBLE           0
 178 #define __ISO_C_VISIBLE         1990
 179 #elif defined(_C99_SOURCE)      /* Localism to specify strict C99 env. */
 180 #define __POSIX_VISIBLE         0
 181 #define __XSI_VISIBLE           0
 182 #define __BSD_VISIBLE           0
 183 #define __ISO_C_VISIBLE         1999
 184 #else                           /* Default environment: show everything. */
 185 #define __POSIX_VISIBLE         200112
 186 #define __XSI_VISIBLE           600
 187 #define __BSD_VISIBLE           1
 188 #define __ISO_C_VISIBLE         1999
 189 #endif
 190 #endif
 191
 192 /*****************************************************************************
 193     END OF IMPORTANT STUFF
 194  ****************************************************************************/
 195
 196 /* These are taken (more or less) from FreeBSD sys/cdefs.h */
 197 #define __strong_reference(sym,aliassym) \
 198     extern __typeof__ (sym) aliassym __attribute__ ((alias (#sym)))
 199 #define __weak_reference(sym,alias)        \
 200         __asm__(".weak " #alias);          \
 201         __asm__(".equ "  #alias ", " #sym)
 202
 203 #include <endian.h>
 204
 205 #endif /* _SYS_CDEFS_H_ */