title: boost/property_tree/xml_parser.hpp: No such file or directory
body: <p>I have installed boost_1_41_0 and try to follow some tutorials on xml parsing:</p>
  
  <pre><code>#include &lt;boost/property_tree/ptree.hpp&gt;
  int main(){
    using boost::property_tree::ptree;
    ptree pt;
    cout&lt;&lt;"Here is an XML test!\n";
    return 0;
  }
  </code></pre>
  
  <p>But the problem is that the boost can not find the required header:</p>
  
  <pre><code>gcc.compile.c++ bin/gcc-4.6.0/debug/main.o
  main.cpp:1:46: fatal error: boost/property_tree/ptree.hpp: No such file or  directory
  compilation terminated.
  </code></pre>
  
  <p>Using "" instead of &lt;> does not help either. I also tried to pass the option cxxflags=-I/pass/to/this/header - this does not work too. Only if I use the full path to the header - it works, but it then depends on another header file, which it can not find.</p>
  
  <p>So how to make boost installation look for its own include directories? Thanks.</p>