title: most common config flags for installing R from source on 64-bit Ubuntu
body: <p>I'm convinced that using Dirk's package is the best way to install and maintain R on an Ubuntu system. But I want to have some fun and get used to installing R from source.</p>
  
  <p>What are the most common configure flags to use when installing?</p>
  
  <p>Also, if I want to install 2.14.1 and I have 2.14.0 currently installed (which was installed from source), should I first uninstall 2.14.0?</p>