msvc_prefix.hpp

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//  (C) Copyright John Maddock 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)
 
//
// Boost binaries are built with the compiler's default ABI settings,
// if the user changes their default alignment in the VS IDE then their
// code will no longer be binary compatible with the bjam built binaries
// unless this header is included to force Boost code into a consistent ABI.
//
// Note that inclusion of this header is only necessary for libraries with
// separate source, header only libraries DO NOT need this as long as all
// translation units are built with the same options.
//
#if defined(_M_X64)
#  pragma pack(push, 16)
#else
#  pragma pack(push, 8)
#endif