mirror of
https://github.com/boostorg/config.git
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373 lines
12 KiB
C++
373 lines
12 KiB
C++
// Boost config.hpp configuration header file ------------------------------//
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// (C) Copyright Boost.org 2001. Permission to copy, use, modify, sell and
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// distribute this software is granted provided this copyright notice appears
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// in all copies. This software is provided "as is" without express or implied
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// warranty, and with no claim as to its suitability for any purpose.
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// See http://www.boost.org for most recent version.
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// Boost config.hpp policy and rationale documentation has been moved to
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// http://www.boost.org/libs/config
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//
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// This file is intended to be stable, and relatively unchanging.
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// It should contain boilerplate code only - no compiler specific
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// code unless it is unavoidable - no changes unless unavoidable.
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#ifndef BOOST_CONFIG_SUFFIX_HPP
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#define BOOST_CONFIG_SUFFIX_HPP
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//
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// look for long long by looking for the appropriate macros in <limits.h>.
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// Note that we use limits.h rather than climits for maximal portability,
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// remember that since these just declare a bunch of macros, there should be
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// no namespace issues from this.
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//
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#include <limits.h>
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# if !defined(BOOST_HAS_LONG_LONG) \
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&& !(defined(BOOST_MSVC) && BOOST_MSVC <=1300) && !defined(__BORLANDC__) \
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&& (defined(ULLONG_MAX) || defined(ULONG_LONG_MAX) || defined(ULONGLONG_MAX))
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# define BOOST_HAS_LONG_LONG
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#endif
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#if !defined(BOOST_HAS_LONG_LONG) && !defined(BOOST_NO_INTEGRAL_INT64_T)
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# define BOOST_NO_INTEGRAL_INT64_T
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#endif
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// GCC 3.x will clean up all of those nasty macro definitions that
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// BOOST_NO_CTYPE_FUNCTIONS is intended to help work around, so undefine
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// it under GCC 3.x.
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#if defined(__GNUC__) && (__GNUC__ >= 3) && defined(BOOST_NO_CTYPE_FUNCTIONS)
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# undef BOOST_NO_CTYPE_FUNCTIONS
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#endif
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//
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// Assume any extensions are in namespace std:: unless stated otherwise:
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//
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# ifndef BOOST_STD_EXTENSION_NAMESPACE
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# define BOOST_STD_EXTENSION_NAMESPACE std
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# endif
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//
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// If cv-qualified specializations are not allowed, then neither are cv-void ones:
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//
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# if defined(BOOST_NO_CV_SPECIALIZATIONS) \
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&& !defined(BOOST_NO_CV_VOID_SPECIALIZATIONS)
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# define BOOST_NO_CV_VOID_SPECIALIZATIONS
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# endif
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//
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// If there is no numeric_limits template, then it can't have any compile time
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// constants either!
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//
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# if defined(BOOST_NO_LIMITS) \
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&& !defined(BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS)
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# define BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
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# define BOOST_NO_MS_INT64_NUMERIC_LIMITS
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# define BOOST_NO_LONG_LONG_NUMERIC_LIMITS
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# endif
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//
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// if there is no long long then there is no specialisation
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// for numeric_limits<long long> either:
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//
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#if !defined(BOOST_HAS_LONG_LONG) && !defined(BOOST_NO_LONG_LONG_NUMERIC_LIMITS)
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# define BOOST_NO_LONG_LONG_NUMERIC_LIMITS
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#endif
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//
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// if there is no __int64 then there is no specialisation
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// for numeric_limits<__int64> either:
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//
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#if !defined(BOOST_HAS_MS_INT64) && !defined(BOOST_NO_MS_INT64_NUMERIC_LIMITS)
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# define BOOST_NO_MS_INT64_NUMERIC_LIMITS
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#endif
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//
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// if member templates are supported then so is the
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// VC6 subset of member templates:
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//
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# if !defined(BOOST_NO_MEMBER_TEMPLATES) \
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&& !defined(BOOST_MSVC6_MEMBER_TEMPLATES)
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# define BOOST_MSVC6_MEMBER_TEMPLATES
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# endif
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//
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// Without partial specialization, can't test for partial specialisation bugs:
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//
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# if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \
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&& !defined(BOOST_BCB_PARTIAL_SPECIALIZATION_BUG)
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# define BOOST_BCB_PARTIAL_SPECIALIZATION_BUG
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# endif
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//
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// Without partial specialization, std::iterator_traits can't work:
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//
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# if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \
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&& !defined(BOOST_NO_STD_ITERATOR_TRAITS)
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# define BOOST_NO_STD_ITERATOR_TRAITS
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# endif
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//
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// Without member template support, we can't have template constructors
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// in the standard library either:
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//
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# if defined(BOOST_NO_MEMBER_TEMPLATES) \
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&& !defined(BOOST_MSVC6_MEMBER_TEMPLATES) \
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&& !defined(BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS)
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# define BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS
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# endif
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//
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// Without member template support, we can't have a conforming
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// std::allocator template either:
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//
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# if defined(BOOST_NO_MEMBER_TEMPLATES) \
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&& !defined(BOOST_MSVC6_MEMBER_TEMPLATES) \
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&& !defined(BOOST_NO_STD_ALLOCATOR)
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# define BOOST_NO_STD_ALLOCATOR
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# endif
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//
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// If we have a standard allocator, then we have a partial one as well:
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//
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#if !defined(BOOST_NO_STD_ALLOCATOR)
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# define BOOST_HAS_PARTIAL_STD_ALLOCATOR
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#endif
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//
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// We can't have a working std::use_facet if there is no std::locale:
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//
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# if defined(BOOST_NO_STD_LOCALE) && !defined(BOOST_NO_STD_USE_FACET)
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# define BOOST_NO_STD_USE_FACET
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# endif
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//
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// We can't have a std::messages facet if there is no std::locale:
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//
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# if defined(BOOST_NO_STD_LOCALE) && !defined(BOOST_NO_STD_MESSAGES)
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# define BOOST_NO_STD_MESSAGES
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# endif
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//
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// We can't have a working std::wstreambuf if there is no std::locale:
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//
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# if defined(BOOST_NO_STD_LOCALE) && !defined(BOOST_NO_STD_WSTREAMBUF)
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# define BOOST_NO_STD_WSTREAMBUF
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# endif
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//
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// We can't have a <cwctype> if there is no <cwchar>:
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//
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# if defined(BOOST_NO_CWCHAR) && !defined(BOOST_NO_CWCTYPE)
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# define BOOST_NO_CWCTYPE
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# endif
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//
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// We can't have a swprintf if there is no <cwchar>:
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//
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# if defined(BOOST_NO_CWCHAR) && !defined(BOOST_NO_SWPRINTF)
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# define BOOST_NO_SWPRINTF
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# endif
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//
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// If Win32 support is turned off, then we must turn off
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// threading support also, unless there is some other
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// thread API enabled:
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//
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#if defined(BOOST_DISABLE_WIN32) && defined(_WIN32) \
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&& !defined(BOOST_DISABLE_THREADS) && !defined(BOOST_HAS_PTHREADS)
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# define BOOST_DISABLE_THREADS
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#endif
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//
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// Turn on threading support if the compiler thinks that it's in
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// multithreaded mode. We put this here because there are only a
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// limited number of macros that identify this (if there's any missing
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// from here then add to the appropriate compiler section):
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//
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#if (defined(__MT__) || defined(_MT) || defined(_REENTRANT) \
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|| defined(_PTHREADS)) && !defined(BOOST_HAS_THREADS)
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# define BOOST_HAS_THREADS
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#endif
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//
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// Turn threading support off if BOOST_DISABLE_THREADS is defined:
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//
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#if defined(BOOST_DISABLE_THREADS) && defined(BOOST_HAS_THREADS)
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# undef BOOST_HAS_THREADS
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#endif
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//
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// Turn threading support off if we don't recognise the threading API:
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//
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#if defined(BOOST_HAS_THREADS) && !defined(BOOST_HAS_PTHREADS)\
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&& !defined(BOOST_HAS_WINTHREADS) && !defined(BOOST_HAS_BETHREADS)\
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&& !defined(BOOST_HAS_MPTASKS)
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# undef BOOST_HAS_THREADS
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#endif
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//
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// If the compiler claims to be C99 conformant, then it had better
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// have a <stdint.h>:
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//
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# if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901)
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# define BOOST_HAS_STDINT_H
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# endif
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//
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// Define BOOST_NO_SLIST and BOOST_NO_HASH if required.
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// Note that this is for backwards compatibility only.
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//
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# ifndef BOOST_HAS_SLIST
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# define BOOST_NO_SLIST
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# endif
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# ifndef BOOST_HAS_HASH
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# define BOOST_NO_HASH
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# endif
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// BOOST_NO_STDC_NAMESPACE workaround --------------------------------------//
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// Because std::size_t usage is so common, even in boost headers which do not
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// otherwise use the C library, the <cstddef> workaround is included here so
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// that ugly workaround code need not appear in many other boost headers.
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// NOTE WELL: This is a workaround for non-conforming compilers; <cstddef>
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// must still be #included in the usual places so that <cstddef> inclusion
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// works as expected with standard conforming compilers. The resulting
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// double inclusion of <cstddef> is harmless.
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# ifdef BOOST_NO_STDC_NAMESPACE
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# include <cstddef>
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namespace std { using ::ptrdiff_t; using ::size_t; }
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# endif
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// BOOST_NO_STD_MIN_MAX workaround -----------------------------------------//
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# ifdef BOOST_NO_STD_MIN_MAX
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namespace std {
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template <class _Tp>
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inline const _Tp& min(const _Tp& __a, const _Tp& __b) {
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return __b < __a ? __b : __a;
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}
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template <class _Tp>
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inline const _Tp& max(const _Tp& __a, const _Tp& __b) {
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return __a < __b ? __b : __a;
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}
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}
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# endif
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// BOOST_STATIC_CONSTANT workaround --------------------------------------- //
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// On compilers which don't allow in-class initialization of static integral
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// constant members, we must use enums as a workaround if we want the constants
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// to be available at compile-time. This macro gives us a convenient way to
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// declare such constants.
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# ifdef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
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# define BOOST_STATIC_CONSTANT(type, assignment) enum { assignment }
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# else
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# define BOOST_STATIC_CONSTANT(type, assignment) static const type assignment
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# endif
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// BOOST_USE_FACET workaround ----------------------------------------------//
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// When the standard library does not have a conforming std::use_facet there
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// are various workarounds available, but they differ from library to library.
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// This macro provides a consistent way to access a locale's facets.
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// Usage:
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// replace
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// std::use_facet<Type>(loc);
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// with
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// BOOST_USE_FACET(Type, loc);
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// Note do not add a std:: prefix to the front of BOOST_USE_FACET!
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#if defined(BOOST_NO_STD_USE_FACET)
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# ifdef BOOST_HAS_TWO_ARG_USE_FACET
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# define BOOST_USE_FACET(Type, loc) std::use_facet(loc, static_cast<Type*>(0))
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# elif defined(BOOST_HAS_MACRO_USE_FACET)
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# define BOOST_USE_FACET(Type, loc) std::_USE(loc, Type)
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# elif defined(BOOST_HAS_STLP_USE_FACET)
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# define BOOST_USE_FACET(Type, loc) (*std::_Use_facet<Type >(loc))
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# endif
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#else
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# define BOOST_USE_FACET(Type, loc) std::use_facet< Type >(loc)
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#endif
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// BOOST_NESTED_TEMPLATE workaround ------------------------------------------//
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// Member templates are supported by some compilers even though they can't use
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// the A::template member<U> syntax, as a workaround replace:
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//
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// typedef typename A::template rebind<U> binder;
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//
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// with:
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//
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// typedef typename A::BOOST_NESTED_TEMPLATE rebind<U> binder;
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#ifndef BOOST_NO_MEMBER_TEMPLATE_KEYWORD
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# define BOOST_NESTED_TEMPLATE template
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#else
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# define BOOST_NESTED_TEMPLATE
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#endif
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// BOOST_DEDUCED_TYPENAME workaround ------------------------------------------//
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//
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// Some compilers don't support the use of `typename' for dependent
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// types in deduced contexts, e.g.
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//
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// template <class T> void f(T, typename T::type);
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// ^^^^^^^^
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// Replace these declarations with:
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//
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// template <class T> void f(T, BOOST_DEDUCED_TYPENAME T::type);
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#ifndef BOOST_NO_DEDUCED_TYPENAME
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# define BOOST_DEDUCED_TYPENAME typename
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#else
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# define BOOST_DEDUCED_TYPENAME
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#endif
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// ---------------------------------------------------------------------------//
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//
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// Helper macro BOOST_STRINGIZE:
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// Converts the parameter X to a string after macro replacement
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// on X has been performed.
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//
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#define BOOST_STRINGIZE(X) BOOST_DO_STRINGIZE(X)
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#define BOOST_DO_STRINGIZE(X) #X
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//
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// Helper macro BOOST_JOIN:
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// The following piece of macro magic joins the two
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// arguments together, even when one of the arguments is
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// itself a macro (see 16.3.1 in C++ standard). The key
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// is that macro expansion of macro arguments does not
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// occur in BOOST_DO_JOIN2 but does in BOOST_DO_JOIN.
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//
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#define BOOST_JOIN( X, Y ) BOOST_DO_JOIN( X, Y )
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#define BOOST_DO_JOIN( X, Y ) BOOST_DO_JOIN2(X,Y)
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#define BOOST_DO_JOIN2( X, Y ) X##Y
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//
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// Set some default values for compiler/library/platform names.
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// These are for debugging config setup only:
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//
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# ifndef BOOST_COMPILER
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# define BOOST_COMPILER "Unknown ISO C++ Compiler"
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# endif
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# ifndef BOOST_STDLIB
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# define BOOST_STDLIB "Unknown ISO standard library"
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# endif
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# ifndef BOOST_PLATFORM
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# if defined(unix) || defined(__unix) || defined(_XOPEN_SOURCE) \
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|| defined(_POSIX_SOURCE)
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# define BOOST_PLATFORM "Generic Unix"
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# else
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# define BOOST_PLATFORM "Unknown"
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# endif
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# endif
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#endif
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