title: Using g++ on OSX Lion, ld: unknown option: -no_compact_unwind
body: <p>I followed the instructions at <a href="https://sites.google.com/site/dwhipp/tutorials/mac_compilers" rel="nofollow">https://sites.google.com/site/dwhipp/tutorials/mac_compilers</a> for OSX Lion and XCode 4.3 to use g++ on the command line, but when I run it I get this:</p>
  
  <pre><code>jeff~/Dropbox/cpp$ g++ hello.cpp 
  ld: unknown option: -no_compact_unwind
  collect2: error: ld returned 1 exit status
  </code></pre>