title: #import <libxml/tree.h> file not found after xcode update
body: <p>Lastnight I updated my iPhone to iOS 6.1, my current version of xcode wouldn't build to the phone as I needed the newest version.</p>
  
  <p>I went from xcode 4.5.2 to xcode 4.6, I made 0 changes in my project file.</p>
  
  <p>What used to compile completely fine, now gives me a file not found error </p>
  
  <pre><code>#import &lt;libxml/tree.h&gt; 'libxml/tree.h' file not found
  </code></pre>
  
  <p>I have my search paths correctly linked up with</p>
  
  <pre><code>$(SDKROOT)/usr/include/libxml2
  </code></pre>
  
  <p>and libxml2 is linked and required in build phases.</p>
  
  <p>Edit: </p>
  
  <p>Peculiar I changed my search paths to the following and voila..</p>
  
  <pre><code>/usr/include/libxml2
  </code></pre>
  
  <p>Not sure why this has fixed this issue, could anyone enlighten me as to what's changed in xcode?</p>