291 lines
7.7 KiB
C++
291 lines
7.7 KiB
C++
// (C) Copyright Douglas Gregor 2010
|
|
//
|
|
// Use, modification and distribution are subject to the
|
|
// Boost Software License, Version 1.0. (See accompanying file
|
|
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
|
|
|
// See http://www.boost.org for most recent version.
|
|
|
|
// compiler setup for IBM XL C/C++ for Linux (Little Endian) based on clang.
|
|
|
|
#define BOOST_HAS_PRAGMA_ONCE
|
|
|
|
// Detecting `-fms-extension` compiler flag assuming that _MSC_VER defined when that flag is used.
|
|
#if defined (_MSC_VER) && (__clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 4))
|
|
# define BOOST_HAS_PRAGMA_DETECT_MISMATCH
|
|
#endif
|
|
|
|
// When compiling with clang before __has_extension was defined,
|
|
// even if one writes 'defined(__has_extension) && __has_extension(xxx)',
|
|
// clang reports a compiler error. So the only workaround found is:
|
|
|
|
#ifndef __has_extension
|
|
#define __has_extension __has_feature
|
|
#endif
|
|
|
|
#ifndef __has_cpp_attribute
|
|
#define __has_cpp_attribute(x) 0
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_exceptions) && !defined(BOOST_NO_EXCEPTIONS)
|
|
# define BOOST_NO_EXCEPTIONS
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_rtti) && !defined(BOOST_NO_RTTI)
|
|
# define BOOST_NO_RTTI
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_rtti) && !defined(BOOST_NO_TYPEID)
|
|
# define BOOST_NO_TYPEID
|
|
#endif
|
|
|
|
#if defined(__int64) && !defined(__GNUC__)
|
|
# define BOOST_HAS_MS_INT64
|
|
#endif
|
|
|
|
#define BOOST_HAS_NRVO
|
|
|
|
// Branch prediction hints
|
|
#if defined(__has_builtin)
|
|
#if __has_builtin(__builtin_expect)
|
|
#define BOOST_LIKELY(x) __builtin_expect(x, 1)
|
|
#define BOOST_UNLIKELY(x) __builtin_expect(x, 0)
|
|
#endif
|
|
#endif
|
|
|
|
// Clang supports "long long" in all compilation modes.
|
|
#define BOOST_HAS_LONG_LONG
|
|
|
|
//
|
|
// Dynamic shared object (DSO) and dynamic-link library (DLL) support
|
|
//
|
|
#if !defined(_WIN32) && !defined(__WIN32__) && !defined(WIN32)
|
|
# define BOOST_SYMBOL_EXPORT __attribute__((__visibility__("default")))
|
|
# define BOOST_SYMBOL_IMPORT
|
|
# define BOOST_SYMBOL_VISIBLE __attribute__((__visibility__("default")))
|
|
#endif
|
|
|
|
//
|
|
// The BOOST_FALLTHROUGH macro can be used to annotate implicit fall-through
|
|
// between switch labels.
|
|
//
|
|
#if __cplusplus >= 201103L && defined(__has_warning)
|
|
# if __has_feature(cxx_attributes) && __has_warning("-Wimplicit-fallthrough")
|
|
# define BOOST_FALLTHROUGH [[clang::fallthrough]]
|
|
# endif
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_auto_type)
|
|
# define BOOST_NO_CXX11_AUTO_DECLARATIONS
|
|
# define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
|
|
#endif
|
|
|
|
//
|
|
// Currently clang on Windows using VC++ RTL does not support C++11's char16_t or char32_t
|
|
//
|
|
#if defined(_MSC_VER) || !(defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L)
|
|
# define BOOST_NO_CXX11_CHAR16_T
|
|
# define BOOST_NO_CXX11_CHAR32_T
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_constexpr)
|
|
# define BOOST_NO_CXX11_CONSTEXPR
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_decltype)
|
|
# define BOOST_NO_CXX11_DECLTYPE
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_decltype_incomplete_return_types)
|
|
# define BOOST_NO_CXX11_DECLTYPE_N3276
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_defaulted_functions)
|
|
# define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_deleted_functions)
|
|
# define BOOST_NO_CXX11_DELETED_FUNCTIONS
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_explicit_conversions)
|
|
# define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_default_function_template_args)
|
|
# define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_generalized_initializers)
|
|
# define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_lambdas)
|
|
# define BOOST_NO_CXX11_LAMBDAS
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_local_type_template_args)
|
|
# define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_noexcept)
|
|
# define BOOST_NO_CXX11_NOEXCEPT
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_nullptr)
|
|
# define BOOST_NO_CXX11_NULLPTR
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_range_for)
|
|
# define BOOST_NO_CXX11_RANGE_BASED_FOR
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_raw_string_literals)
|
|
# define BOOST_NO_CXX11_RAW_LITERALS
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_reference_qualified_functions)
|
|
# define BOOST_NO_CXX11_REF_QUALIFIERS
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_generalized_initializers)
|
|
# define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_rvalue_references)
|
|
# define BOOST_NO_CXX11_RVALUE_REFERENCES
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_strong_enums)
|
|
# define BOOST_NO_CXX11_SCOPED_ENUMS
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_static_assert)
|
|
# define BOOST_NO_CXX11_STATIC_ASSERT
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_alias_templates)
|
|
# define BOOST_NO_CXX11_TEMPLATE_ALIASES
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_unicode_literals)
|
|
# define BOOST_NO_CXX11_UNICODE_LITERALS
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_variadic_templates)
|
|
# define BOOST_NO_CXX11_VARIADIC_TEMPLATES
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_user_literals)
|
|
# define BOOST_NO_CXX11_USER_DEFINED_LITERALS
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_alignas)
|
|
# define BOOST_NO_CXX11_ALIGNAS
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_trailing_return)
|
|
# define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_inline_namespaces)
|
|
# define BOOST_NO_CXX11_INLINE_NAMESPACES
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_override_control)
|
|
# define BOOST_NO_CXX11_FINAL
|
|
# define BOOST_NO_CXX11_OVERRIDE
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_unrestricted_unions)
|
|
# define BOOST_NO_CXX11_UNRESTRICTED_UNION
|
|
#endif
|
|
|
|
#if !(__has_feature(__cxx_binary_literals__) || __has_extension(__cxx_binary_literals__))
|
|
# define BOOST_NO_CXX14_BINARY_LITERALS
|
|
#endif
|
|
|
|
#if !__has_feature(__cxx_decltype_auto__)
|
|
# define BOOST_NO_CXX14_DECLTYPE_AUTO
|
|
#endif
|
|
|
|
#if !__has_feature(__cxx_aggregate_nsdmi__)
|
|
# define BOOST_NO_CXX14_AGGREGATE_NSDMI
|
|
#endif
|
|
|
|
#if !__has_feature(__cxx_init_captures__)
|
|
# define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
|
|
#endif
|
|
|
|
#if !__has_feature(__cxx_generic_lambdas__)
|
|
# define BOOST_NO_CXX14_GENERIC_LAMBDAS
|
|
#endif
|
|
|
|
// clang < 3.5 has a defect with dependent type, like following.
|
|
//
|
|
// template <class T>
|
|
// constexpr typename enable_if<pred<T> >::type foo(T &)
|
|
// { } // error: no return statement in constexpr function
|
|
//
|
|
// This issue also affects C++11 mode, but C++11 constexpr requires return stmt.
|
|
// Therefore we don't care such case.
|
|
//
|
|
// Note that we can't check Clang version directly as the numbering system changes depending who's
|
|
// creating the Clang release (see https://github.com/boostorg/config/pull/39#issuecomment-59927873)
|
|
// so instead verify that we have a feature that was introduced at the same time as working C++14
|
|
// constexpr (generic lambda's in this case):
|
|
//
|
|
#if !__has_feature(__cxx_generic_lambdas__) || !__has_feature(__cxx_relaxed_constexpr__)
|
|
# define BOOST_NO_CXX14_CONSTEXPR
|
|
#endif
|
|
|
|
#if !__has_feature(__cxx_return_type_deduction__)
|
|
# define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
|
|
#endif
|
|
|
|
#if !__has_feature(__cxx_variable_templates__)
|
|
# define BOOST_NO_CXX14_VARIABLE_TEMPLATES
|
|
#endif
|
|
|
|
#if !defined(__cpp_structured_bindings) || (__cpp_structured_bindings < 201606)
|
|
# define BOOST_NO_CXX17_STRUCTURED_BINDINGS
|
|
#endif
|
|
|
|
#if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
|
|
# define BOOST_NO_CXX17_IF_CONSTEXPR
|
|
#endif
|
|
|
|
// Clang 3.9+ in c++1z
|
|
#if !__has_cpp_attribute(fallthrough) || __cplusplus < 201406L
|
|
# define BOOST_NO_CXX17_INLINE_VARIABLES
|
|
# define BOOST_NO_CXX17_FOLD_EXPRESSIONS
|
|
#endif
|
|
|
|
#if !__has_feature(cxx_thread_local)
|
|
# define BOOST_NO_CXX11_THREAD_LOCAL
|
|
#endif
|
|
|
|
#if __cplusplus < 201400
|
|
// All versions with __cplusplus above this value seem to support this:
|
|
# define BOOST_NO_CXX14_DIGIT_SEPARATORS
|
|
#endif
|
|
|
|
|
|
// Unused attribute:
|
|
#if defined(__GNUC__) && (__GNUC__ >= 4)
|
|
# define BOOST_ATTRIBUTE_UNUSED __attribute__((unused))
|
|
#endif
|
|
|
|
// Type aliasing hint.
|
|
#if __has_attribute(__may_alias__)
|
|
# define BOOST_MAY_ALIAS __attribute__((__may_alias__))
|
|
#endif
|
|
|
|
#ifndef BOOST_COMPILER
|
|
# define BOOST_COMPILER "Clang version " __clang_version__
|
|
#endif
|
|
|
|
// Macro used to identify the Clang compiler.
|
|
#define BOOST_CLANG 1
|
|
|