github.com/searKing/golang/go@v1.2.117/os/signal/cgo/include/boost/config/compiler/xlcpp.hpp (about) 1 // (C) Copyright Douglas Gregor 2010 2 // 3 // Use, modification and distribution are subject to the 4 // Boost Software License, Version 1.0. (See accompanying file 5 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 6 7 // See http://www.boost.org for most recent version. 8 9 // compiler setup for IBM XL C/C++ for Linux (Little Endian) based on clang. 10 11 #define BOOST_HAS_PRAGMA_ONCE 12 13 // Detecting `-fms-extension` compiler flag assuming that _MSC_VER defined when that flag is used. 14 #if defined (_MSC_VER) && (__clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 4)) 15 # define BOOST_HAS_PRAGMA_DETECT_MISMATCH 16 #endif 17 18 // When compiling with clang before __has_extension was defined, 19 // even if one writes 'defined(__has_extension) && __has_extension(xxx)', 20 // clang reports a compiler error. So the only workaround found is: 21 22 #ifndef __has_extension 23 #define __has_extension __has_feature 24 #endif 25 26 #ifndef __has_cpp_attribute 27 #define __has_cpp_attribute(x) 0 28 #endif 29 30 #if !__has_feature(cxx_exceptions) && !defined(BOOST_NO_EXCEPTIONS) 31 # define BOOST_NO_EXCEPTIONS 32 #endif 33 34 #if !__has_feature(cxx_rtti) && !defined(BOOST_NO_RTTI) 35 # define BOOST_NO_RTTI 36 #endif 37 38 #if !__has_feature(cxx_rtti) && !defined(BOOST_NO_TYPEID) 39 # define BOOST_NO_TYPEID 40 #endif 41 42 #if defined(__int64) && !defined(__GNUC__) 43 # define BOOST_HAS_MS_INT64 44 #endif 45 46 #define BOOST_HAS_NRVO 47 48 // Branch prediction hints 49 #if defined(__has_builtin) 50 #if __has_builtin(__builtin_expect) 51 #define BOOST_LIKELY(x) __builtin_expect(x, 1) 52 #define BOOST_UNLIKELY(x) __builtin_expect(x, 0) 53 #endif 54 #endif 55 56 // Clang supports "long long" in all compilation modes. 57 #define BOOST_HAS_LONG_LONG 58 59 // 60 // Dynamic shared object (DSO) and dynamic-link library (DLL) support 61 // 62 #if !defined(_WIN32) && !defined(__WIN32__) && !defined(WIN32) 63 # define BOOST_SYMBOL_EXPORT __attribute__((__visibility__("default"))) 64 # define BOOST_SYMBOL_IMPORT 65 # define BOOST_SYMBOL_VISIBLE __attribute__((__visibility__("default"))) 66 #endif 67 68 // 69 // The BOOST_FALLTHROUGH macro can be used to annotate implicit fall-through 70 // between switch labels. 71 // 72 #if __cplusplus >= 201103L && defined(__has_warning) 73 # if __has_feature(cxx_attributes) && __has_warning("-Wimplicit-fallthrough") 74 # define BOOST_FALLTHROUGH [[clang::fallthrough]] 75 # endif 76 #endif 77 78 #if !__has_feature(cxx_auto_type) 79 # define BOOST_NO_CXX11_AUTO_DECLARATIONS 80 # define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS 81 #endif 82 83 // 84 // Currently clang on Windows using VC++ RTL does not support C++11's char16_t or char32_t 85 // 86 #if defined(_MSC_VER) || !(defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L) 87 # define BOOST_NO_CXX11_CHAR16_T 88 # define BOOST_NO_CXX11_CHAR32_T 89 #endif 90 91 #if !__has_feature(cxx_constexpr) 92 # define BOOST_NO_CXX11_CONSTEXPR 93 #endif 94 95 #if !__has_feature(cxx_decltype) 96 # define BOOST_NO_CXX11_DECLTYPE 97 #endif 98 99 #if !__has_feature(cxx_decltype_incomplete_return_types) 100 # define BOOST_NO_CXX11_DECLTYPE_N3276 101 #endif 102 103 #if !__has_feature(cxx_defaulted_functions) 104 # define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS 105 #endif 106 107 #if !__has_feature(cxx_deleted_functions) 108 # define BOOST_NO_CXX11_DELETED_FUNCTIONS 109 #endif 110 111 #if !__has_feature(cxx_explicit_conversions) 112 # define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS 113 #endif 114 115 #if !__has_feature(cxx_default_function_template_args) 116 # define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS 117 #endif 118 119 #if !__has_feature(cxx_generalized_initializers) 120 # define BOOST_NO_CXX11_HDR_INITIALIZER_LIST 121 #endif 122 123 #if !__has_feature(cxx_lambdas) 124 # define BOOST_NO_CXX11_LAMBDAS 125 #endif 126 127 #if !__has_feature(cxx_local_type_template_args) 128 # define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS 129 #endif 130 131 #if !__has_feature(cxx_noexcept) 132 # define BOOST_NO_CXX11_NOEXCEPT 133 #endif 134 135 #if !__has_feature(cxx_nullptr) 136 # define BOOST_NO_CXX11_NULLPTR 137 #endif 138 139 #if !__has_feature(cxx_range_for) 140 # define BOOST_NO_CXX11_RANGE_BASED_FOR 141 #endif 142 143 #if !__has_feature(cxx_raw_string_literals) 144 # define BOOST_NO_CXX11_RAW_LITERALS 145 #endif 146 147 #if !__has_feature(cxx_reference_qualified_functions) 148 # define BOOST_NO_CXX11_REF_QUALIFIERS 149 #endif 150 151 #if !__has_feature(cxx_generalized_initializers) 152 # define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX 153 #endif 154 155 #if !__has_feature(cxx_rvalue_references) 156 # define BOOST_NO_CXX11_RVALUE_REFERENCES 157 #endif 158 159 #if !__has_feature(cxx_strong_enums) 160 # define BOOST_NO_CXX11_SCOPED_ENUMS 161 #endif 162 163 #if !__has_feature(cxx_static_assert) 164 # define BOOST_NO_CXX11_STATIC_ASSERT 165 #endif 166 167 #if !__has_feature(cxx_alias_templates) 168 # define BOOST_NO_CXX11_TEMPLATE_ALIASES 169 #endif 170 171 #if !__has_feature(cxx_unicode_literals) 172 # define BOOST_NO_CXX11_UNICODE_LITERALS 173 #endif 174 175 #if !__has_feature(cxx_variadic_templates) 176 # define BOOST_NO_CXX11_VARIADIC_TEMPLATES 177 #endif 178 179 #if !__has_feature(cxx_user_literals) 180 # define BOOST_NO_CXX11_USER_DEFINED_LITERALS 181 #endif 182 183 #if !__has_feature(cxx_alignas) 184 # define BOOST_NO_CXX11_ALIGNAS 185 #endif 186 187 #if !__has_feature(cxx_alignof) 188 # define BOOST_NO_CXX11_ALIGNOF 189 #endif 190 191 #if !__has_feature(cxx_trailing_return) 192 # define BOOST_NO_CXX11_TRAILING_RESULT_TYPES 193 #endif 194 195 #if !__has_feature(cxx_inline_namespaces) 196 # define BOOST_NO_CXX11_INLINE_NAMESPACES 197 #endif 198 199 #if !__has_feature(cxx_override_control) 200 # define BOOST_NO_CXX11_FINAL 201 # define BOOST_NO_CXX11_OVERRIDE 202 #endif 203 204 #if !__has_feature(cxx_unrestricted_unions) 205 # define BOOST_NO_CXX11_UNRESTRICTED_UNION 206 #endif 207 208 #if !(__has_feature(__cxx_binary_literals__) || __has_extension(__cxx_binary_literals__)) 209 # define BOOST_NO_CXX14_BINARY_LITERALS 210 #endif 211 212 #if !__has_feature(__cxx_decltype_auto__) 213 # define BOOST_NO_CXX14_DECLTYPE_AUTO 214 #endif 215 216 #if !__has_feature(__cxx_aggregate_nsdmi__) 217 # define BOOST_NO_CXX14_AGGREGATE_NSDMI 218 #endif 219 220 #if !__has_feature(__cxx_init_captures__) 221 # define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES 222 #endif 223 224 #if !__has_feature(__cxx_generic_lambdas__) 225 # define BOOST_NO_CXX14_GENERIC_LAMBDAS 226 #endif 227 228 // clang < 3.5 has a defect with dependent type, like following. 229 // 230 // template <class T> 231 // constexpr typename enable_if<pred<T> >::type foo(T &) 232 // { } // error: no return statement in constexpr function 233 // 234 // This issue also affects C++11 mode, but C++11 constexpr requires return stmt. 235 // Therefore we don't care such case. 236 // 237 // Note that we can't check Clang version directly as the numbering system changes depending who's 238 // creating the Clang release (see https://github.com/boostorg/config/pull/39#issuecomment-59927873) 239 // so instead verify that we have a feature that was introduced at the same time as working C++14 240 // constexpr (generic lambda's in this case): 241 // 242 #if !__has_feature(__cxx_generic_lambdas__) || !__has_feature(__cxx_relaxed_constexpr__) 243 # define BOOST_NO_CXX14_CONSTEXPR 244 #endif 245 246 #if !__has_feature(__cxx_return_type_deduction__) 247 # define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION 248 #endif 249 250 #if !__has_feature(__cxx_variable_templates__) 251 # define BOOST_NO_CXX14_VARIABLE_TEMPLATES 252 #endif 253 254 #if !defined(__cpp_structured_bindings) || (__cpp_structured_bindings < 201606) 255 # define BOOST_NO_CXX17_STRUCTURED_BINDINGS 256 #endif 257 258 #if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606) 259 # define BOOST_NO_CXX17_IF_CONSTEXPR 260 #endif 261 262 // Clang 3.9+ in c++1z 263 #if !__has_cpp_attribute(fallthrough) || __cplusplus < 201406L 264 # define BOOST_NO_CXX17_INLINE_VARIABLES 265 # define BOOST_NO_CXX17_FOLD_EXPRESSIONS 266 #endif 267 268 #if !__has_feature(cxx_thread_local) 269 # define BOOST_NO_CXX11_THREAD_LOCAL 270 #endif 271 272 #if __cplusplus < 201400 273 // All versions with __cplusplus above this value seem to support this: 274 # define BOOST_NO_CXX14_DIGIT_SEPARATORS 275 #endif 276 277 // Deprecated symbol markup 278 #if __has_attribute(deprecated) 279 #define BOOST_DEPRECATED(msg) __attribute__((deprecated(msg))) 280 #endif 281 282 // Unused attribute: 283 #if defined(__GNUC__) && (__GNUC__ >= 4) 284 # define BOOST_ATTRIBUTE_UNUSED __attribute__((unused)) 285 #endif 286 287 // Type aliasing hint. 288 #if __has_attribute(__may_alias__) 289 # define BOOST_MAY_ALIAS __attribute__((__may_alias__)) 290 #endif 291 292 #ifndef BOOST_COMPILER 293 # define BOOST_COMPILER "Clang version " __clang_version__ 294 #endif 295 296 // Macro used to identify the Clang compiler. 297 #define BOOST_CLANG 1 298 299 #define BOOST_CLANG_VERSION (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__)