title: Omitting module in Qt pro file under Windows
body: <p>The Qt pro file begins as follows:</p>
  <pre><code>QT += core gui
  QT += serialport
  QT += displaysettings
  </code></pre>
  <p>This builds for my Hummingboard running Debian Linux. However displaysettings isn't available for Windows builds.I want to exclude this module from windows builds. I can exclude the function calls in the code from compiling. But adding displaysettings here causes an error.</p>