title: Building OpenCV libraries from source files
body: <p>I have installed <code>Python 2.7</code>, but when I try to generate the <code>OpenCV 2.3.1</code> project Makefiles using <code>CMake 2.8</code>, I get the following message. I am running Windows 7 x86 and using Visual Studio 10.</p>
  
  <pre><code>Could NOT find PythonInterp (missing:  PYTHON_EXECUTABLE) 
  Could NOT find PythonLibs (missing:  PYTHON_LIBRARIES PYTHON_INCLUDE_DIRS) 
  </code></pre>
  
  <p>I have followed the guide provided at this <a href="http://opencv.itseez.com/doc/tutorials/introduction/windows_install/windows_install.html" rel="noreferrer">link</a>.</p>