title: Building OpenCV 2.3.1 with Python 2.7 support in Ubuntu 11.10 64bit
body: <p>I have seen a lot of posts on this topic, however I have not found regarding this warning:</p>
  
  <pre><code>CMake Warning:
     Manually-specified variables were not used by the project:
  
     BUILD_PYTHON_SUPPORT
  </code></pre>
  
  <p>when I compile with cmake. When building OpenCV with this warning, it turns out that it doesn't include python support (surprise).</p>
  
  <p>I use this command to compile the build-files </p>
  
  <pre><code>cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D BUILD_PYTHON_SUPPORT=ON -D BUILD_EXAMPLES=ON ..
  </code></pre>
  
  <p>I have installed python-dev.</p>