title: how to build g++
body: <p>I'm currently trying to get g++ working, and looking at <a href="http://gcc.gnu.org/install/build.html" rel="nofollow noreferrer">http://gcc.gnu.org/install/build.html</a>, I can't seem to find where it says <em>how</em> "to perform a 3-stage bootstrap of the compiler".  Where would I find this information?</p>
  
  <p>(I'm on a mac, in case that matters.)</p>