title: QT version is not properly installed, please run make install
body: <p>I installed QT-creator from a downloaded copy of <code>qt-creator-linux-x86-opensource-2.6.1.bin</code> using </p>
  
  <pre><code>sudo ./qt-creator-linux-x86-opensource-2.6.1.bin 
  </code></pre>
  
  <p>in Ubuntu 11.04</p>
  
  <p>I tried to add QT versions in QT-Creator/Build/QT-versions configuration and it asked for a qmake executable.</p>
  
  <p>I installed it using:</p>
  
  <pre><code>sudo apt-get install qt4-devel
  </code></pre>
  
  <p>which deployed qmake in <code>/usr/bin/qmake</code></p>
  
  <p>I selected it in QT-Creator/Build/QT-versions configuration as manual, <code>Qt-4.7.2 (System) /usr/bin/qmake-qt4</code> but <code>QT version is not properly installed, please run make install</code> message appears and I can't use it in QT-Creator/Build/Kits configuration.</p>
  
  <p>How can I solve the problem and configure qmake for Qt-creator use in project creation?</p>