73ef4ff3
 Hu Chunming
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// boost/chrono/config.hpp -------------------------------------------------//
// Copyright Beman Dawes 2003, 2006, 2008
// Copyright 2009 Vicente J. Botet Escriba
// Distributed under 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/libs/chrono for documentation.
#ifndef BOOST_EX_CHRONO_CONFIG_HPP
#define BOOST_EX_CHRONO_CONFIG_HPP
#include <boost/config.hpp>
// BOOST_EX_CHRONO_POSIX_API, BOOST_EX_CHRONO_MAC_API, or BOOST_EX_CHRONO_WINDOWS_API
// can be defined by the user to specify which API should be used
#if defined(BOOST_EX_CHRONO_WINDOWS_API)
# warning Boost.Chrono will use the Windows API
#elif defined(BOOST_EX_CHRONO_MAC_API)
# warning Boost.Chrono will use the Mac API
#elif defined(BOOST_EX_CHRONO_POSIX_API)
# warning Boost.Chrono will use the POSIX API
#endif
# if defined( BOOST_EX_CHRONO_WINDOWS_API ) && defined( BOOST_EX_CHRONO_POSIX_API )
# error both BOOST_EX_CHRONO_WINDOWS_API and BOOST_EX_CHRONO_POSIX_API are defined
# elif defined( BOOST_EX_CHRONO_WINDOWS_API ) && defined( BOOST_EX_CHRONO_MAC_API )
# error both BOOST_EX_CHRONO_WINDOWS_API and BOOST_EX_CHRONO_MAC_API are defined
# elif defined( BOOST_EX_CHRONO_MAC_API ) && defined( BOOST_EX_CHRONO_POSIX_API )
# error both BOOST_EX_CHRONO_MAC_API and BOOST_EX_CHRONO_POSIX_API are defined
# elif !defined( BOOST_EX_CHRONO_WINDOWS_API ) && !defined( BOOST_EX_CHRONO_MAC_API ) && !defined( BOOST_EX_CHRONO_POSIX_API )
# if (defined(_WIN32) || defined(__WIN32__) || defined(WIN32))
# define BOOST_EX_CHRONO_WINDOWS_API
# define BOOST_EX_CHRONO_HAS_CLOCK_MONOTONIC
# define BOOST_EX_CHRONO_HAS_THREAD_CLOCK
# define BOOST_EX_CHRONO_THREAD_CLOCK_IS_MONOTONIC true
# elif defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__)
# define BOOST_EX_CHRONO_MAC_API
# define BOOST_EX_CHRONO_HAS_CLOCK_MONOTONIC
# define BOOST_EX_CHRONO_THREAD_CLOCK_IS_MONOTONIC true
# else
# define BOOST_EX_CHRONO_POSIX_API
# endif
# endif
# if defined( BOOST_EX_CHRONO_POSIX_API )
# include <time.h> //to check for CLOCK_REALTIME and CLOCK_MONOTONIC and _POSIX_THREAD_CPUTIME
# if defined(CLOCK_REALTIME)
# if defined(CLOCK_MONOTONIC)
# define BOOST_EX_CHRONO_HAS_CLOCK_MONOTONIC
# endif
# else
# error <time.h> does not supply CLOCK_REALTIME
# endif
# if defined(_POSIX_THREAD_CPUTIME)
# define BOOST_EX_CHRONO_HAS_THREAD_CLOCK
# define BOOST_EX_CHRONO_THREAD_CLOCK_IS_MONOTONIC true
# endif
# endif
// enable dynamic linking on Windows ---------------------------------------//
//# if (defined(BOOST_ALL_DYN_LINK) || defined(BOOST_EX_CHRONO_DYN_LINK)) && defined(__BORLANDC__) && defined(__WIN32__)
//# error Dynamic linking Boost.System does not work for Borland; use static linking instead
//# endif
#ifdef BOOST_HAS_DECLSPEC // defined by boost.config
// we need to import/export our code only if the user has specifically
// asked for it by defining either BOOST_ALL_DYN_LINK if they want all boost
// libraries to be dynamically linked, or BOOST_EX_CHRONO_DYN_LINK
// if they want just this one to be dynamically liked:
#if defined(BOOST_ALL_DYN_LINK) || defined(BOOST_EX_CHRONO_DYN_LINK)
// export if this is our own source, otherwise import:
#ifdef BOOST_EX_CHRONO_SOURCE
# define BOOST_EX_CHRONO_DECL __declspec(dllexport)
#else
# define BOOST_EX_CHRONO_DECL __declspec(dllimport)
#endif // BOOST_EX_CHRONO_SOURCE
#endif // DYN_LINK
#endif // BOOST_HAS_DECLSPEC
//
// if BOOST_EX_CHRONO_DECL isn't defined yet define it now:
#ifndef BOOST_EX_CHRONO_DECL
#define BOOST_EX_CHRONO_DECL
#endif
// define constexpr related macros ------------------------------//
//~ #include <boost/config.hpp>
#if defined(BOOST_NO_CXX11_CONSTEXPR)
#define BOOST_EX_CHRONO_CONSTEXPR
#define BOOST_EX_CHRONO_CONST_REF const&
#else
#define BOOST_EX_CHRONO_CONSTEXPR constexpr
#define BOOST_EX_CHRONO_CONST_REF
#endif
// enable automatic library variant selection ------------------------------//
#if !defined(BOOST_EX_CHRONO_SOURCE) && !defined(BOOST_ALL_NO_LIB) && !defined(BOOST_EX_CHRONO_NO_LIB) && !defined(BOOST_CHRONO_NO_LIB)
//
// Set the name of our library; this will get undef'ed by auto_link.hpp
// once it's done with it:
//
#define BOOST_LIB_NAME boost_chrono
//
// If we're importing code from a dll, then tell auto_link.hpp about it:
//
#if defined(BOOST_ALL_DYN_LINK) || defined(BOOST_EX_CHRONO_DYN_LINK)
# define BOOST_DYN_LINK
#endif
//
// And include the header that does the work:
//
#include <boost/config/auto_link.hpp>
#endif // auto-linking disabled
#endif // BOOST_EX_CHRONO_CONFIG_HPP
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