rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 1 | /* $NetBSD: cdefs.h,v 1.58 2004/12/11 05:59:00 christos Exp $ */ |
| 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. Neither the name of the University nor the names of its contributors |
| 19 | * may be used to endorse or promote products derived from this software |
| 20 | * without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 32 | * SUCH DAMAGE. |
| 33 | * |
| 34 | * @(#)cdefs.h 8.8 (Berkeley) 1/9/95 |
| 35 | */ |
| 36 | |
| 37 | /* |
| 38 | * This is a minimum version of cdefs.h for LK, this might be |
| 39 | * modified if necessary |
| 40 | */ |
| 41 | #ifndef _SYS_CDEFS_H_ |
| 42 | #define _SYS_CDEFS_H_ |
| 43 | |
| 44 | /*- |
| 45 | * Deal with _ANSI_SOURCE: |
| 46 | * If it is defined, and no other compilation environment is explicitly |
| 47 | * requested, then define our internal feature-test macros to zero. This |
| 48 | * makes no difference to the preprocessor (undefined symbols in preprocessing |
| 49 | * expressions are defined to have value zero), but makes it more convenient for |
| 50 | * a test program to print out the values. |
| 51 | * |
| 52 | * If a program mistakenly defines _ANSI_SOURCE and some other macro such as |
| 53 | * _POSIX_C_SOURCE, we will assume that it wants the broader compilation |
| 54 | * environment (and in fact we will never get here). |
| 55 | */ |
| 56 | #if defined(_ANSI_SOURCE) /* Hide almost everything. */ |
| 57 | #define __POSIX_VISIBLE 0 |
| 58 | #define __XSI_VISIBLE 0 |
| 59 | #define __BSD_VISIBLE 0 |
| 60 | #define __ISO_C_VISIBLE 1990 |
| 61 | #elif defined(_C99_SOURCE) /* Localism to specify strict C99 env. */ |
| 62 | #define __POSIX_VISIBLE 0 |
| 63 | #define __XSI_VISIBLE 0 |
| 64 | #define __BSD_VISIBLE 0 |
| 65 | #define __ISO_C_VISIBLE 1999 |
| 66 | #else /* Default environment: show everything. */ |
| 67 | #define __POSIX_VISIBLE 200809 |
| 68 | #define __XSI_VISIBLE 700 |
| 69 | #define __BSD_VISIBLE 1 |
| 70 | #define __ISO_C_VISIBLE 1999 |
| 71 | #endif |
| 72 | |
| 73 | /* |
| 74 | * Default values. |
| 75 | */ |
| 76 | #ifndef __XPG_VISIBLE |
| 77 | # define __XPG_VISIBLE 700 |
| 78 | #endif |
| 79 | #ifndef __POSIX_VISIBLE |
| 80 | # define __POSIX_VISIBLE 200809 |
| 81 | #endif |
| 82 | #ifndef __ISO_C_VISIBLE |
| 83 | # define __ISO_C_VISIBLE 1999 |
| 84 | #endif |
| 85 | #ifndef __BSD_VISIBLE |
| 86 | # define __BSD_VISIBLE 1 |
| 87 | #endif |
| 88 | |
| 89 | |
| 90 | /* |
| 91 | * Some of the FreeBSD sources used in Bionic need this. |
| 92 | * Originally, this is used to embed the rcs versions of each source file |
| 93 | * in the generated binary. We certainly don't want this in Bionic. |
| 94 | */ |
| 95 | #define __FBSDID(s) /* nothing */ |
| 96 | |
| 97 | #define __pure2 __attribute__((__const__)) /* Android-added: used by FreeBSD libm */ |
| 98 | |
| 99 | /* |
| 100 | * Macro to test if we're using a GNU C compiler of a specific vintage |
| 101 | * or later, for e.g. features that appeared in a particular version |
| 102 | * of GNU C. Usage: |
| 103 | * |
| 104 | * #if __GNUC_PREREQ__(major, minor) |
| 105 | * ...cool feature... |
| 106 | * #else |
| 107 | * ...delete feature... |
| 108 | * #endif |
| 109 | */ |
| 110 | #ifdef __GNUC__ |
| 111 | #define __GNUC_PREREQ__(x, y) \ |
| 112 | ((__GNUC__ == (x) && __GNUC_MINOR__ >= (y)) || \ |
| 113 | (__GNUC__ > (x))) |
| 114 | #else |
| 115 | #define __GNUC_PREREQ__(x, y) 0 |
| 116 | #endif |
| 117 | |
| 118 | #if defined(__cplusplus) |
| 119 | #define __BEGIN_DECLS extern "C" { |
| 120 | #define __END_DECLS } |
| 121 | #define __static_cast(x,y) static_cast<x>(y) |
| 122 | #else |
| 123 | #define __BEGIN_DECLS |
| 124 | #define __END_DECLS |
| 125 | #define __static_cast(x,y) (x)y |
| 126 | #endif |
| 127 | |
| 128 | #if defined(__cplusplus) |
| 129 | #define __inline inline /* convert to C++ keyword */ |
| 130 | #else |
| 131 | #if !defined(__GNUC__) && !defined(__lint__) |
| 132 | #define __inline /* delete GCC keyword */ |
| 133 | #endif /* !__GNUC__ && !__lint__ */ |
| 134 | #endif /* !__cplusplus */ |
| 135 | |
| 136 | #if __GNUC_PREREQ__(3, 1) |
| 137 | #define __always_inline __attribute__((__always_inline__)) |
| 138 | #else |
| 139 | #define __always_inline |
| 140 | #endif |
| 141 | |
| 142 | |
| 143 | |
| 144 | #endif /* !_SYS_CDEFS_H_ */ |