title: Missing lib file when building QwtPlot3d with Qt 5.1.1
body: <p>I am trying to build <a href="http://sourceforge.net/projects/qwtplot3d/" rel="nofollow">qwtplot3d library</a> with Qt 5.1.1. Everything seems to be build fine and it generated .dll file but I couldn't find .lib file must be generated. I have pulled source code from trunk but it seems it didn't build with Qt5(may be it built with Qt4). May be this is a QT5 porting problem but I couldn't any solution.</p>
  
  <p>Do you have any idea?</p>