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Annotation of prex-old/include/sys/cdefs.h, Revision 1.1.1.1.2.1

1.1       nbrk        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. Neither the name of the University nor the names of its contributors
                     17:  *    may be used to endorse or promote products derived from this software
                     18:  *    without specific prior written permission.
                     19:  *
                     20:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     21:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     22:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     23:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     24:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     25:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     26:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     27:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     28:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     29:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     30:  * SUCH DAMAGE.
                     31:  *
                     32:  *     @(#)cdefs.h     8.8 (Berkeley) 1/9/95
                     33:  */
                     34:
                     35: #ifndef        _SYS_CDEFS_H_
                     36: #define        _SYS_CDEFS_H_
                     37:
1.1.1.1.2.1! nbrk       38: /*
        !            39:  * Macro to test if we're using a GNU C compiler of a specific vintage
        !            40:  * or later, for e.g. features that appeared in a particular version
        !            41:  * of GNU C.  Usage:
        !            42:  *
        !            43:  *     #if __GNUC_PREREQ__(major, minor)
        !            44:  *     ...cool feature...
        !            45:  *     #else
        !            46:  *     ...delete feature...
        !            47:  *     #endif
        !            48:  */
        !            49: #ifdef __GNUC__
        !            50: #define        __GNUC_PREREQ__(x, y)                                           \
        !            51:        ((__GNUC__ == (x) && __GNUC_MINOR__ >= (y)) ||                  \
        !            52:         (__GNUC__ > (x)))
        !            53: #else
        !            54: #define        __GNUC_PREREQ__(x, y)   0
        !            55: #endif
        !            56:
1.1       nbrk       57: #if defined(__cplusplus)
                     58: #define        __BEGIN_DECLS   extern "C" {
                     59: #define        __END_DECLS     };
                     60: #else
                     61: #define        __BEGIN_DECLS
                     62: #define        __END_DECLS
                     63: #endif
                     64:
                     65: #define        __CONCAT(x,y)   x ## y
                     66: #define        __STRING(x)     #x
1.1.1.1.2.1! nbrk       67:
        !            68: #if defined(__cplusplus) || defined(__PCC__)
        !            69: #define        __inline        inline          /* convert to C++/C99 keyword */
1.1       nbrk       70: #else
1.1.1.1.2.1! nbrk       71: #ifndef __GNUC__
        !            72: #define        __inline                        /* delete GCC keyword */
1.1       nbrk       73: #endif
1.1.1.1.2.1! nbrk       74: #endif /* !__cplusplus */
1.1       nbrk       75:
                     76: #ifdef __GNUC__
                     77: #define        __packed        __attribute__((__packed__))
                     78: #define        __noreturn      __attribute__((__noreturn__))
                     79: #elif defined(__lint__)
                     80: #define        __packed        /* delete */
1.1.1.1.2.1! nbrk       81: #define        __noreturn      /* delete */
        !            82: #elif defined(__PCC__)
        !            83: #define        __packed        _Pragma("packed")
1.1       nbrk       84: #define        __noreturn      /* delete */
                     85: #else
                     86: #define        __packed        error: no __packed for this compiler
                     87: #define        __noreturn      /* delete */
                     88: #endif
                     89:
                     90: #endif /* !_SYS_CDEFS_H_ */