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Annotation of prex/include/sys/cdefs.h, Revision 1.1

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:
        !            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:
        !            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
        !            67:
        !            68: #if defined(__cplusplus) || defined(__PCC__)
        !            69: #define        __inline        inline          /* convert to C++/C99 keyword */
        !            70: #else
        !            71: #ifndef __GNUC__
        !            72: #define        __inline                        /* delete GCC keyword */
        !            73: #endif
        !            74: #endif /* !__cplusplus */
        !            75:
        !            76: #ifdef __GNUC__
        !            77: #define        __packed        __attribute__((__packed__))
        !            78: #define        __noreturn      __attribute__((__noreturn__))
        !            79: #elif defined(__lint__)
        !            80: #define        __packed        /* delete */
        !            81: #define        __noreturn      /* delete */
        !            82: #elif defined(__PCC__)
        !            83: #define        __packed        _Pragma("packed")
        !            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_ */