title: error when installing xdebug with phpize
body: <p>I am trying to install xdebug, so I used the custom installation options on the site, when it came to "phpize" I get the error:</p>
  
  <p>Cannot find config.m4. 
  Make sure that you run '/usr/bin/phpize' in the top level source directory of the module</p>
  
  <p>even if I use the full path to phpize I get the same error.</p>
  
  <p>I am using OS X Lion</p>
  
  <p>Thanks</p>
  
  <p>Ric</p>