title: Error: boost/scoped_ptr.hpp: No such file or directory while using libkml
body: <p>I am developing a software which uses Google Map database. I searched google and I found a library in C++ can do that - libkml. I've downloaded some examples code in this <a href="http://code.google.com/p/libkml/source/browse/trunk/examples/#examples/xsd%253Fstate%253Dclosed" rel="nofollow">website</a>, but when I compiled with this command: <code>g++ main.cpp -lkml</code>, it occured an error:</p>
  
  <pre><code>fatal error: boost/scoped_ptr.hpp: No such file or directory
  </code></pre>
  
  <p>What is "boost/scoped_ptr.hpp"? I try finding this file in terminal </p>
  
  <pre><code>locate boost/scoped_ptr.hpp 
  </code></pre>
  
  <p>but there's nothing.</p>