The Tcpdump Group git mirrors - libpcap/blob - pcap/compiler-tests.h

   1 /* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */
   2 /*
   3  * Copyright (c) 1993, 1994, 1995, 1996, 1997
   4  *      The Regents of the University of California.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed by the Computer Systems
  17  *      Engineering Group at Lawrence Berkeley Laboratory.
  18  * 4. Neither the name of the University nor of the Laboratory may be used
  19  *    to endorse or promote products derived from this software without
  20  *    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
  35 #ifndef lib_pcap_compiler_tests_h
  36 #define lib_pcap_compiler_tests_h
  37
  38
  39 /*
  40  * This was introduced by Clang:
  41  *
  42  *     http://clang.llvm.org/docs/LanguageExtensions.html#has-attribute
  43  *
  44  * in some version (which version?); it has been picked up by GCC 5.0.
  45  */
  46 #ifndef __has_attribute
  47   /*
  48    * It's a macro, so you can check whether it's defined to check
  49    * whether it's supported.
  50    *
  51    * If it's not, define it to always return 0, so that we move on to
  52    * the fallback checks.
  53    */
  54   #define __has_attribute(x) 0
  55 #endif
  56
  57 /*
  58  * Check whether this is GCC major.minor or a later release, or some
  59  * compiler that claims to be "just like GCC" of that version or a
  60  * later release.
  61  */
  62
  63 #if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 3))
  64 #define PCAP_IS_AT_LEAST_GNUC_VERSION_2_3 1
  65 #else
  66 #define PCAP_IS_AT_LEAST_GNUC_VERSION_2_3 0
  67 #endif
  68
  69 #if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 5))
  70 #define PCAP_IS_AT_LEAST_GNUC_VERSION_2_5 1
  71 #else
  72 #define PCAP_IS_AT_LEAST_GNUC_VERSION_2_5 0
  73 #endif
  74
  75 #if defined(__GNUC__) && (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1))
  76 #define PCAP_IS_AT_LEAST_GNUC_VERSION_3_1 1
  77 #else
  78 #define PCAP_IS_AT_LEAST_GNUC_VERSION_3_1 0
  79 #endif
  80
  81 #if defined(__GNUC__) && (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
  82 #define PCAP_IS_AT_LEAST_GNUC_VERSION_3_4 1
  83 #else
  84 #define PCAP_IS_AT_LEAST_GNUC_VERSION_3_4 0
  85 #endif
  86
  87 #if defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5))
  88 #define PCAP_IS_AT_LEAST_GNUC_VERSION_4_5 1
  89 #else
  90 #define PCAP_IS_AT_LEAST_GNUC_VERSION_4_5 0
  91 #endif
  92
  93 /*
  94  * Check wehether this is Sun C/SunPro C/Oracle Studio major.minor
  95  * or a later release.
  96  *
  97  * The version number in __SUNPRO_C is encoded in hex BCD, with the
  98  * uppermost hex digit being the major version number, the next
  99  * one or two hex digits being the minor version number, and
 100  * the last digit being the patch version.
 101  *
 102  * It represents the *compiler* version, not the product version;
 103  * see
 104  *
 105  *    https://sourceforge.net/p/predef/wiki/Compilers/
 106  *
 107  * for a partial mapping, which we assume continues for later
 108  * 12.x product releases.
 109  */
 110 #define PCAP_SUNPRO_VERSION_TO_BCD(major, minor) \
 111         (((minor) >= 10) ? \
 112             (((major) << 12) | (((minor)/10) << 8) | (((minor)%10) << 4)) : \
 113             (((major) << 8) | ((minor) << 4)))
 114
 115 #if defined(__SUNPRO_C) && __SUNPRO_C >= PCAP_SUNPRO_VERSION_TO_BCD(5, 5)
 116 #define PCAP_IS_AT_LEAST_SUNC_VERSION_5_5 1
 117 #else
 118 #define PCAP_IS_AT_LEAST_SUNC_VERSION_5_5 0
 119 #endif
 120
 121 #if defined(__SUNPRO_C) && __SUNPRO_C >= PCAP_SUNPRO_VERSION_TO_BCD(5, 9)
 122 #define PCAP_IS_AT_LEAST_SUNC_VERSION_5_9 1
 123 #else
 124 #define PCAP_IS_AT_LEAST_SUNC_VERSION_5_9 0
 125 #endif
 126
 127 #if defined(__SUNPRO_C) && __SUNPRO_C >= PCAP_SUNPRO_VERSION_TO_BCD(5, 13)
 128 #define PCAP_IS_AT_LEAST_SUNC_VERSION_5_13 1
 129 #else
 130 #define PCAP_IS_AT_LEAST_SUNC_VERSION_5_13 0
 131 #endif
 132
 133 /*
 134  * Check wehether this is IBM XL C major.minor or a later release.
 135  *
 136  * The version number in __xlC__ has the major version in the
 137  * upper 8 bits and the minor version in the lower 8 bits.
 138  */
 139
 140 #if defined(__xlC__) && __xlC__ >= ((10 << 8) | 1)
 141 #define PCAP_IS_AT_LEAST_XL_C_VERSION_10_1 1
 142 #else
 143 #define PCAP_IS_AT_LEAST_XL_C_VERSION_10_1 0
 144 #endif
 145
 146 #if defined(__xlC__) && __xlC__ >= ((12 << 8) | 0)
 147 #define PCAP_IS_AT_LEAST_XL_C_VERSION_12_0 1
 148 #else
 149 #define PCAP_IS_AT_LEAST_XL_C_VERSION_12_0 0
 150 #endif
 151
 152 /*
 153  * Check wehether this is Sun C/SunPro C/Oracle Studio major.minor
 154  * or a later release.
 155  *
 156  * The version number in __HP_aCC is encoded in zero-padded decimal BCD,
 157  * with the "A." stripped off, the uppermost two decimal digits being
 158  * the major version number, the next two decimal digits being the minor
 159  * version number, and the last two decimal digits being the patch version.
 160  * (Strip off the A., remove the . between the major and minor version
 161  * number, and add two digits of patch.)
 162  */
 163
 164 #if defined(__HP_aCC) && (__HP_aCC >= (6*10000 + 10*100))
 165 #define PCAP_IS_AT_LEAST_HP_C_VERSION_6_10 1
 166 #else
 167 #define PCAP_IS_AT_LEAST_HP_C_VERSION_6_10 0
 168 #endif
 169
 170 #endif /* lib_pcap_funcattrs_h */