boost/config/compiler/clang.hpp

   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 // Clang compiler setup.
  10
  11 #define BOOST_HAS_PRAGMA_ONCE
  12
  13 #if !__has_feature(cxx_exceptions) && !defined(BOOST_NO_EXCEPTIONS)
  14 #  define BOOST_NO_EXCEPTIONS
  15 #endif
  16
  17 #if !__has_feature(cxx_rtti) && !defined(BOOST_NO_RTTI)
  18 #  define BOOST_NO_RTTI
  19 #endif
  20
  21 #if !__has_feature(cxx_rtti) && !defined(BOOST_NO_TYPEID)
  22 #  define BOOST_NO_TYPEID
  23 #endif
  24
  25 #if defined(__int64) && !defined(__GNUC__)
  26 #  define BOOST_HAS_MS_INT64
  27 #endif
  28
  29 #define BOOST_HAS_NRVO
  30
  31 // Branch prediction hints
  32 #if defined(__has_builtin)
  33 #if __has_builtin(__builtin_expect)
  34 #define BOOST_LIKELY(x) __builtin_expect(x, 1)
  35 #define BOOST_UNLIKELY(x) __builtin_expect(x, 0)
  36 #endif
  37 #endif
  38
  39 // Clang supports "long long" in all compilation modes.
  40 #define BOOST_HAS_LONG_LONG
  41
  42 //
  43 // Dynamic shared object (DSO) and dynamic-link library (DLL) support
  44 //
  45 #if !defined(_WIN32) && !defined(__WIN32__) && !defined(WIN32)
  46 #  define BOOST_SYMBOL_EXPORT __attribute__((__visibility__("default")))
  47 #  define BOOST_SYMBOL_IMPORT
  48 #  define BOOST_SYMBOL_VISIBLE __attribute__((__visibility__("default")))
  49 #endif
  50
  51 //
  52 // The BOOST_FALLTHROUGH macro can be used to annotate implicit fall-through
  53 // between switch labels.
  54 //
  55 #if __cplusplus >= 201103L && defined(__has_warning)
  56 #  if __has_feature(cxx_attributes) && __has_warning("-Wimplicit-fallthrough")
  57 #    define BOOST_FALLTHROUGH [[clang::fallthrough]]
  58 #  endif
  59 #endif
  60
  61 #if !__has_feature(cxx_auto_type)
  62 #  define BOOST_NO_CXX11_AUTO_DECLARATIONS
  63 #  define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
  64 #endif
  65
  66 #if !(defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L)
  67 #  define BOOST_NO_CXX11_CHAR16_T
  68 #  define BOOST_NO_CXX11_CHAR32_T
  69 #endif
  70
  71 #if !__has_feature(cxx_constexpr)
  72 #  define BOOST_NO_CXX11_CONSTEXPR
  73 #endif
  74
  75 #if !__has_feature(cxx_decltype)
  76 #  define BOOST_NO_CXX11_DECLTYPE
  77 #endif
  78
  79 #if !__has_feature(cxx_decltype_incomplete_return_types)
  80 #  define BOOST_NO_CXX11_DECLTYPE_N3276
  81 #endif
  82
  83 #if !__has_feature(cxx_defaulted_functions)
  84 #  define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
  85 #endif
  86
  87 #if !__has_feature(cxx_deleted_functions)
  88 #  define BOOST_NO_CXX11_DELETED_FUNCTIONS
  89 #endif
  90
  91 #if !__has_feature(cxx_explicit_conversions)
  92 #  define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
  93 #endif
  94
  95 #if !__has_feature(cxx_default_function_template_args)
  96 #  define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
  97 #endif
  98
  99 #if !__has_feature(cxx_generalized_initializers)
 100 #  define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
 101 #endif
 102
 103 #if !__has_feature(cxx_lambdas)
 104 #  define BOOST_NO_CXX11_LAMBDAS
 105 #endif
 106
 107 #if !__has_feature(cxx_local_type_template_args)
 108 #  define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
 109 #endif
 110
 111 #if !__has_feature(cxx_noexcept)
 112 #  define BOOST_NO_CXX11_NOEXCEPT
 113 #endif
 114
 115 #if !__has_feature(cxx_nullptr)
 116 #  define BOOST_NO_CXX11_NULLPTR
 117 #endif
 118
 119 #if !__has_feature(cxx_range_for)
 120 #  define BOOST_NO_CXX11_RANGE_BASED_FOR
 121 #endif
 122
 123 #if !__has_feature(cxx_raw_string_literals)
 124 #  define BOOST_NO_CXX11_RAW_LITERALS
 125 #endif
 126
 127 #if !__has_feature(cxx_generalized_initializers)
 128 #  define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
 129 #endif
 130
 131 #if !__has_feature(cxx_rvalue_references)
 132 #  define BOOST_NO_CXX11_RVALUE_REFERENCES
 133 #endif
 134
 135 #if !__has_feature(cxx_strong_enums)
 136 #  define BOOST_NO_CXX11_SCOPED_ENUMS
 137 #endif
 138
 139 #if !__has_feature(cxx_static_assert)
 140 #  define BOOST_NO_CXX11_STATIC_ASSERT
 141 #endif
 142
 143 #if !__has_feature(cxx_alias_templates)
 144 #  define BOOST_NO_CXX11_TEMPLATE_ALIASES
 145 #endif
 146
 147 #if !__has_feature(cxx_unicode_literals)
 148 #  define BOOST_NO_CXX11_UNICODE_LITERALS
 149 #endif
 150
 151 #if !__has_feature(cxx_variadic_templates)
 152 #  define BOOST_NO_CXX11_VARIADIC_TEMPLATES
 153 #endif
 154
 155 #if !__has_feature(cxx_user_literals)
 156 #  define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 157 #endif
 158
 159 #if !(__has_feature(cxx_alignas) || __has_extension(cxx_alignas))
 160 #  define BOOST_NO_CXX11_ALIGNAS
 161 #endif
 162
 163 #if !__has_feature(cxx_trailing_return)
 164 #  define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 165 #endif
 166
 167 #if !__has_feature(cxx_inline_namespaces)
 168 #  define BOOST_NO_CXX11_INLINE_NAMESPACES
 169 #endif
 170
 171 // Clang always supports variadic macros
 172 // Clang always supports extern templates
 173
 174 #ifndef BOOST_COMPILER
 175 #  define BOOST_COMPILER "Clang version " __clang_version__
 176 #endif
 177
 178 // Macro used to identify the Clang compiler.
 179 #define BOOST_CLANG 1
 180