title: CMake Error: The following variables are used in this project, but they are set to NOTFOUND
body: <p>I'm running a CMake build script for a project on CentOS 6 and I'm getting the following errors:</p>
  
  <pre class="lang-none prettyprint-override"><code>CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
  Please set them or make sure they are set and tested correctly in the CMake files:
  QT_QTOPENGL_INCLUDE_DIR (ADVANCED)
    used as include directory in directory /home/auser/Documents/Projects/Framework/src/AFrameworkFolder
  QT_QTWEBKIT_INCLUDE_DIR (ADVANCED)
    used as include directory in directory /home/auser/Documents/Projects/Framework/src/BFrameworkFolder
  </code></pre>
  
  <p>I have QT 4.8.4 installed and I'm using CMake version 2.8.10.2. The build script I'm using also works fine on Mac OSX 10.8.</p>
  
  <p>Can anyone tell me what is happening here? </p>
  
  <p>To me it looks like its having trouble finding some of the QT folders it needs and I don't see any folders in QT mentioning OpenGL or Webkit. If these are missing how would I go about installing them? If this is not the issue can someone please guide me to fixing the solution?</p>