#ifndef BOOST_ARCHIVE_TMPDIR_HPP

 #define BOOST_ARCHIVE_TMPDIR_HPP

 // MS compatible compilers support #pragma once

 #if defined(_MSC_VER) && (_MSC_VER >= 1020)

 # pragma once

 #endif

 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8

 // tmpdir.hpp:

 // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 

 // Use, modification and distribution is 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 updates, documentation, and revision history.

 #include <cstdlib> // getenv

 #include <cassert>

 #include <boost/config.hpp>

 #ifdef BOOST_NO_STDC_NAMESPACE

 namespace std {

     using ::getenv;

 }

 #endif

 namespace boost {

 namespace archive {

 inline char * tmpdir(){

     char *dirname;

     dirname = std::getenv("TMP");

     if(NULL == dirname)

         dirname = std::getenv("TMPDIR");

     if(NULL == dirname)

         dirname = std::getenv("TEMP");

     if(NULL == dirname){

         //assert(false); // no temp directory found

         dirname = ".";

     }

     return dirname;

 }

 } // archive

 } // boost

 #endif // BOOST_ARCHIVE_TMPDIR_HPP