Install Command Line Xcode
https://developer.apple.com/downloads/index.action#
Install homebrew
https://github.com/mxcl/homebrew/wiki/installation
Install Autoconf
brew install autoconf
Update Pear Channels
sudo pear update-channels
Install PCRE
brew install pcre
Install APC!
sudo pecl install apc
Add the following line to the bottom of the /etc/php.ini file
extension=apc.so to the