title: Requirements to use flto
body: <p>If I want to compile my project with <code>-flto</code> is it enough to have built gcc with <code>--enable-gold</code> or do I also need to build gold and replace ld with it? And do I need any other flags? Ie I'm doing this</p>
  
  <pre><code>gcc -flto one.c two.c
  </code></pre>