title: g77: unrecognized option `-trapuv' f771: error: invalid option `ips2'
body: <p>I am using g77 (gcc 3.4.6) in my fedora 20. I got compiler errors:</p>
  <blockquote>
  <p>g77: unrecognized option `-trapuv'</p>
  <p>f771: error: invalid option `ips2'</p>
  </blockquote>
  <p>How can I solve this problem?</p>
  <p>Also, if I want to use gfortran instead, what are the equivalent options?</p>
  <p>Thanks.</p>