title: How to add custom targets in a qmake generated Makefile?
body: <p>I use qmake to generate the Makefile, and that works well. However, sometimes I want to add more stuff to the generated Makefile without having to edit the generated Makefile.</p>
  
  <p>Let's say that we beside the source code have a Doxygen directory, and there I need to run some doxygen commands to generate the documentation. So it would be nice to have this as a target in the main Makefile. But as default qmake do not understand this type of extra stuff.</p>
  
  <p>So can I add something to tell qmake to include a secondary Makefile in the "doxygen" dir, or maybe add "extra targets" directly in the qmake config?</p>
  
  <hr>
  
  <p>Maybe something like: </p>
  
  <ul>
  <li><a href="http://doc.qt.digia.com/4.6/qmake-environment-reference.html#customizing-makefile-output" rel="nofollow noreferrer">http://doc.qt.digia.com/4.6/qmake-environment-reference.html#customizing-makefile-output</a></li>
  </ul>