MPD
0.18.14
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00001 /* 00002 * Copyright (C) 2003-2013 The Music Player Daemon Project 00003 * http://www.musicpd.org 00004 * 00005 * This program is free software; you can redistribute it and/or modify 00006 * it under the terms of the GNU General Public License as published by 00007 * the Free Software Foundation; either version 2 of the License, or 00008 * (at your option) any later version. 00009 * 00010 * This program is distributed in the hope that it will be useful, 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 * GNU General Public License for more details. 00014 * 00015 * You should have received a copy of the GNU General Public License along 00016 * with this program; if not, write to the Free Software Foundation, Inc., 00017 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 00018 */ 00019 00020 #ifndef COMPILER_H 00021 #define COMPILER_H 00022 00023 #define GCC_CHECK_VERSION(major, minor) \ 00024 (defined(__GNUC__) && \ 00025 (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))) 00026 00027 #ifdef __GNUC__ 00028 #define GCC_VERSION (__GNUC__ * 10000 \ 00029 + __GNUC_MINOR__ * 100 \ 00030 + __GNUC_PATCHLEVEL__) 00031 #else 00032 #define GCC_VERSION 0 00033 #endif 00034 00035 #ifdef __clang__ 00036 # define CLANG_VERSION (__clang_major__ * 10000 \ 00037 + __clang_minor__ * 100 \ 00038 + __clang_patchlevel__) 00039 # if __clang_major__ < 3 00040 # error Sorry, your clang version is too old. You need at least version 3.1. 00041 # endif 00042 #elif defined(__GNUC__) 00043 # if !GCC_CHECK_VERSION(4,6) 00044 # error Sorry, your gcc version is too old. You need at least version 4.6. 00045 # endif 00046 #else 00047 # warning Untested compiler. Use at your own risk! 00048 #endif 00049 00050 #if GCC_CHECK_VERSION(4,0) 00051 00052 /* GCC 4.x */ 00053 00054 #define gcc_const __attribute__((const)) 00055 #define gcc_deprecated __attribute__((deprecated)) 00056 #define gcc_may_alias __attribute__((may_alias)) 00057 #define gcc_malloc __attribute__((malloc)) 00058 #define gcc_noreturn __attribute__((noreturn)) 00059 #define gcc_packed __attribute__((packed)) 00060 #define gcc_printf(a,b) __attribute__((format(printf, a, b))) 00061 #define gcc_pure __attribute__((pure)) 00062 #define gcc_sentinel __attribute__((sentinel)) 00063 #define gcc_unused __attribute__((unused)) 00064 #define gcc_warn_unused_result __attribute__((warn_unused_result)) 00065 00066 #define gcc_nonnull(...) __attribute__((nonnull(__VA_ARGS__))) 00067 #define gcc_nonnull_all __attribute__((nonnull)) 00068 00069 #define gcc_likely(x) __builtin_expect (!!(x), 1) 00070 #define gcc_unlikely(x) __builtin_expect (!!(x), 0) 00071 00072 #define gcc_aligned(n) __attribute__((aligned(n))) 00073 00074 #define gcc_visibility_hidden __attribute__((visibility("hidden"))) 00075 #define gcc_visibility_default __attribute__((visibility("default"))) 00076 00077 #define gcc_always_inline __attribute__((always_inline)) 00078 00079 #else 00080 00081 /* generic C compiler */ 00082 00083 #define gcc_const 00084 #define gcc_deprecated 00085 #define gcc_may_alias 00086 #define gcc_malloc 00087 #define gcc_noreturn 00088 #define gcc_packed 00089 #define gcc_printf(a,b) 00090 #define gcc_pure 00091 #define gcc_sentinel 00092 #define gcc_unused 00093 #define gcc_warn_unused_result 00094 00095 #define gcc_nonnull(...) 00096 #define gcc_nonnull_all 00097 00098 #define gcc_likely(x) (x) 00099 #define gcc_unlikely(x) (x) 00100 00101 #define gcc_aligned(n) 00102 00103 #define gcc_visibility_hidden 00104 #define gcc_visibility_default 00105 00106 #define gcc_always_inline inline 00107 00108 #endif 00109 00110 #if GCC_CHECK_VERSION(4,3) 00111 00112 #define gcc_hot __attribute__((hot)) 00113 #define gcc_cold __attribute__((cold)) 00114 00115 #else /* ! GCC_UNUSED >= 40300 */ 00116 00117 #define gcc_hot 00118 #define gcc_cold 00119 00120 #endif /* ! GCC_UNUSED >= 40300 */ 00121 00122 #if GCC_CHECK_VERSION(4,6) && !defined(__clang__) 00123 #define gcc_flatten __attribute__((flatten)) 00124 #else 00125 #define gcc_flatten 00126 #endif 00127 00128 #ifndef __cplusplus 00129 /* plain C99 has "restrict" */ 00130 #define gcc_restrict restrict 00131 #elif GCC_CHECK_VERSION(4,0) 00132 /* "__restrict__" is a GCC extension for C++ */ 00133 #define gcc_restrict __restrict__ 00134 #else 00135 /* disable it on other compilers */ 00136 #define gcc_restrict 00137 #endif 00138 00139 /* C++11 features */ 00140 00141 #if defined(__cplusplus) 00142 00143 /* support for C++11 "override" was added in gcc 4.7 */ 00144 #if !defined(__clang__) && !GCC_CHECK_VERSION(4,7) 00145 #define override 00146 #define final 00147 #endif 00148 00149 #if defined(__clang__) || GCC_CHECK_VERSION(4,8) 00150 #define gcc_alignas(T, fallback) alignas(T) 00151 #else 00152 #define gcc_alignas(T, fallback) gcc_aligned(fallback) 00153 #endif 00154 00155 #endif 00156 00157 #ifndef __has_feature 00158 // define dummy macro for non-clang compilers 00159 #define __has_feature(x) 0 00160 #endif 00161 00162 #if __has_feature(attribute_unused_on_fields) 00163 #define gcc_unused_field gcc_unused 00164 #else 00165 #define gcc_unused_field 00166 #endif 00167 00168 #if defined(__GNUC__) || defined(__clang__) 00169 #define gcc_unreachable() __builtin_unreachable() 00170 #else 00171 #define gcc_unreachable() 00172 #endif 00173 00174 #endif