title: Unable to build Boost with STLport library
body: <p>I'm building boost 1.48.0 with STLport 5.2.1 on Windows using MSVC 7.1 and here is the command line I run:</p>
  
  <pre><code>b2 toolset=msvc link=shared threading=multi runtime-link=shared variant=debug stdlib=stlport --layout=tagged stage
  </code></pre>
  
  <p>My user-config.jam is setup like so:</p>
  
  <pre><code>using msvc : 7.1 ;
  using stlport : 5.2.1 : C:/Code/third_party_source/STLport-5.2.1/stlport : C:/Code/third_party_source/STLport-5.2.1/lib ;
  </code></pre>
  
  <p>I get several linker errors relating to STLport. One of them looks like this:</p>
  
  <pre><code>path.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall stlpd
  _std::basic_string&lt;wchar_t,class stlpd_std::char_traits&lt;wchar_t&gt;,class stlpd_std::allocator&lt;wchar_t&gt;
   &gt;::basic_string&lt;wchar_t,class stlpd_std::char_traits&lt;wchar_t&gt;,class stlpd_std::allocator&lt;wchar_t&gt; &gt;
  (class stlpd_std::basic_string&lt;wchar_t,class stlpd_std::char_traits&lt;wchar_t&gt;,class stlpd_std::alloca
  tor&lt;wchar_t&gt; &gt; const &amp;)" (__imp_??0?$basic_string@_WV?$char_traits@_W@stlpd_std@@V?$allocator@_W@2@@
  stlpd_std@@QAE@ABV01@@Z)
  </code></pre>
  
  <p>Why can't I get Boost building with STLport?</p>