_LIB_THREAD_OPT<BR>
         + BOOST_LIB_RT_OPT<BR>
         + BOOST_LIB_DEBUG_OPT<BR>
         <BR>
         These are defined as:</P>
      <P>BOOST_LIB_PREFIX: Either "lib" if this is a static link library, 
         or&nbsp;nothing for dynamic / shared&nbsp;libraries.<BR>
         <BR>
         BOOST_LIB_TOOLSET: The compiler toolset name (vc6, vc7, bcb5 etc).<BR>
         <BR>
         BOOST_LIB_THREAD_OPT: "s" for single thread builds,<BR>
         "m" for multithread builds.<BR>
         <BR>
       