title: Qt Creator build error with under Windows
body: <p>I want to port a multiple project MSVS solution to Qt Creator.
  I created the .pro files for the projects and added them to Qt Creator. 
  When I build the projects I always get the same error shown below.
  By the way I am using Qt 4.6.3 (VS 2008). What may cause this?
  <img src="https://i.stack.imgur.com/yVV6E.jpg" alt="enter image description here"></p>