title: Qt: Include .pri to use library - incorrect includes
body: <p>I'm trying to use QtSerialPort (<a href="http://qt-project.org/wiki/QtSerialPort" rel="nofollow">http://qt-project.org/wiki/QtSerialPort</a>) with Qt 4.8. It's not part of that version, so I have to install it manually.
  To avoid to manually install it, I just wanted to include the .pri file that is shipped with QtSerialPort.
  I got my copy by doing "git clone <a href="https://git.gitorious.org/qt/qtserialport.git" rel="nofollow">https://git.gitorious.org/qt/qtserialport.git</a>".
  Using it in my *.pro file with:</p>
  
  <pre><code>include(qtserialport/src/serialport/serialport-lib.pri)
  </code></pre>
  
  <p>But compiling fails bc. of includes like:</p>
  
  <pre><code>#include &lt;QtSerialPort/qserialportglobal.h&gt;
  </code></pre>
  
  <p>So I guess these includes resolve to something like /usr/include etc. Is there any way to fix this without changing all the includes from  to "foo.h" manually?</p>