title: How can I upgrade to Autoconf 2.6.2 or higher on Mac OS X 10.6?
body: <p>My environment is Mac OS X 10.6. I have installed Autoconfig using MacPorts:</p>
  
  <pre><code>sudo port -v selfupdate
  sudo port install autoconf
  </code></pre>
  
  <p>But the autoconf installed is 2.6.1. 
  My question is how can I upgrade it to 2.6.2?</p>
  
  <p>The program I am trying to compile need autoconf 2.6.2</p>
  
  <pre><code>configure.ac:14: error: Autoconf version 2.62 or higher is required
  /opt/local/share/aclocal-1.11/init.m4:110: AM_INIT_AUTOMAKE is expanded from...
  configure.ac:14: the top level
  autom4te: /Developer/usr/bin/gm4 failed with exit status: 63
  aclocal-1.11: autom4te failed with exit status: 63
  make[1]: *** [libmpeg2] Error 63
  </code></pre>