text: //  (C) Copyright John Maddock 2001 - 2003. 
  //  (C) Copyright Darin Adler 2001. 
  //  (C) Copyright Jens Maurer 2001 - 2003. 
  //  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.
  
  //  generic SGI STL:
  
  #if !defined(__STL_CONFIG_H)
  #  include <boost/config/no_tr1/utility.hpp>
  #  if !defined(__STL_CONFIG_H)
  #      error "This is not the SGI STL!"
  #  endif
  #endif
  
  //
  // No std::iterator traits without partial specialisation:
  //
  #if !defined(__STL_CLASS_PARTIAL_SPECIALIZATION)
  #  define BOOST_NO_STD_ITERATOR_TRAITS
  #endif
  
  //
  // No std::stringstream with gcc < 3
  //
  #if defined(__GNUC__) && (__GNUC__ < 3) && \
       ((__GNUC_MINOR__ < 95) || (__GNUC_MINOR__ == 96)) && \
       !defined(__STL_USE_NEW_IOSTREAMS) || \
     defined(__APPLE_CC__)
     // Note that we only set this for GNU C++ prior to 2.95 since the
     // latest patches for that release do contain a minimal <sstream>
     // If you are running a 2.95 release prior to 2.95.3 then this will need
     // setting, but there is no way to detect that automatically (other
     // than by running the configure script).
     // Also, the unofficial GNU C++ 2.96 included in RedHat 7.1 doesn't
     // have <sstream>.
  #  define BOOST_NO_STRINGSTREAM
  #endif
  
  // Apple doesn't seem to reliably defined a *unix* macro
  #if (  defined(__unix__)  \
                          || defined(__unix)    \
                          || defined(unix)      \
                          || defined(__APPLE__) \
                          || defined(__APPLE)   \
                          || defined(APPLE))
  #  include <unistd.h>
  #endif
  
  
  //
  // Assume no std::locale without own iostreams (this may be an
  // incorrect assumption in some cases):
  //
  #if !defined(__SGI_STL_OWN_IOSTREAMS) && !defined(__STL_USE_NEW_IOSTREAMS)
  #  define BOOST_NO_STD_LOCALE
  #endif
  
  //
  // Original native SGI streams have non-standard std::messages facet:
  //
  #if defined(__sgi) && (_COMPILER_VERSION <= 650) && !defined(__SGI_STL_OWN_IOSTREAMS)
  #  define BOOST_NO_STD_LOCALE
  #endif
  
  //
  // SGI's new iostreams have missing "const" in messages<>::open
  //
  #if defined(__sgi) && (_COMPILER_VERSION <= 740) && defined(__STL_USE_NEW_IOSTREAMS)
  #  define BOOST_NO_STD_MESSAGES
  #endif
  
  //
  // No template iterator constructors, or std::allocator
  // without member templates:
  //
  #if !defined(__STL_MEMBER_TEMPLATES)
  #  define BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS
  #  define BOOST_NO_STD_ALLOCATOR
  #endif
  
  //
  // We always have SGI style hash_set, hash_map, and slist:
  //
  #define BOOST_HAS_HASH
  #define BOOST_HAS_SLIST
  
  //
  // If this is GNU libstdc++2, then no <limits> and no std::wstring:
  //
  #if (defined(__GNUC__) && (__GNUC__ < 3))
  #  include <string>
  #  if defined(__BASTRING__)
  #     define BOOST_NO_LIMITS
  // Note: <boost/limits.hpp> will provide compile-time constants
  #     undef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
  #     define BOOST_NO_STD_WSTRING
  #  endif
  #endif
  
  //
  // There is no standard iterator unless we have namespace support:
  //
  #if !defined(__STL_USE_NAMESPACES)
  #  define BOOST_NO_STD_ITERATOR
  #endif
  
  //
  // Intrinsic type_traits support.
  // The SGI STL has it's own __type_traits class, which
  // has intrinsic compiler support with SGI's compilers.
  // Whatever map SGI style type traits to boost equivalents:
  //
  #define BOOST_HAS_SGI_TYPE_TRAITS
  
  //  C++0x headers not yet implemented
  //
  #  define BOOST_NO_CXX11_HDR_ARRAY
  #  define BOOST_NO_CXX11_HDR_CHRONO
  #  define BOOST_NO_CXX11_HDR_CODECVT
  #  define BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
  #  define BOOST_NO_CXX11_HDR_FORWARD_LIST
  #  define BOOST_NO_CXX11_HDR_FUTURE
  #  define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
  #  define BOOST_NO_CXX11_HDR_MUTEX
  #  define BOOST_NO_CXX11_HDR_RANDOM
  #  define BOOST_NO_CXX11_HDR_RATIO
  #  define BOOST_NO_CXX11_HDR_REGEX
  #  define BOOST_NO_CXX11_HDR_SYSTEM_ERROR
  #  define BOOST_NO_CXX11_HDR_THREAD
  #  define BOOST_NO_CXX11_HDR_TUPLE
  #  define BOOST_NO_CXX11_HDR_TYPE_TRAITS
  #  define BOOST_NO_CXX11_HDR_TYPEINDEX
  #  define BOOST_NO_CXX11_HDR_UNORDERED_MAP
  #  define BOOST_NO_CXX11_HDR_UNORDERED_SET
  #  define BOOST_NO_CXX11_NUMERIC_LIMITS
  #  define BOOST_NO_CXX11_ALLOCATOR
  #  define BOOST_NO_CXX11_POINTER_TRAITS
  #  define BOOST_NO_CXX11_ATOMIC_SMART_PTR
  #  define BOOST_NO_CXX11_SMART_PTR
  #  define BOOST_NO_CXX11_HDR_FUNCTIONAL
  #  define BOOST_NO_CXX11_HDR_ATOMIC
  #  define BOOST_NO_CXX11_STD_ALIGN
  #  define BOOST_NO_CXX11_ADDRESSOF
  
  #if defined(__has_include)
  #if !__has_include(<shared_mutex>)
  #  define BOOST_NO_CXX14_HDR_SHARED_MUTEX
  #elif __cplusplus < 201402
  #  define BOOST_NO_CXX14_HDR_SHARED_MUTEX
  #endif
  #else
  #  define BOOST_NO_CXX14_HDR_SHARED_MUTEX
  #endif
  
  // C++14 features
  #  define BOOST_NO_CXX14_STD_EXCHANGE
  
  // C++17 features
  #  define BOOST_NO_CXX17_STD_APPLY
  #  define BOOST_NO_CXX17_STD_INVOKE
  #  define BOOST_NO_CXX17_ITERATOR_TRAITS
  
  #define BOOST_STDLIB "SGI standard library"
  