Prebuilt Packages on Ubuntu 12.04

To install prebuilt packages for Ubuntu 12.04 (amd64):

# If this command is not found then do this: sudo apt-get install python-software-properties
sudo add-apt-repository ppa:mapnik/boost
wget -O - http://dl.hhvm.com/conf/hhvm.gpg.key | sudo apt-key add -
echo deb http://dl.hhvm.com/ubuntu precise main | sudo tee /etc/apt/sources.list.d/hhvm.list
sudo apt-get update
sudo apt-get install hhvm

# If you are getting segfaults
sudo apt-get install hhvm-dbg
# Living on the edge (rebuilt everyday, unstable)
sudo apt-get install hhvm-nightly
# Segfaults in the nightly
sudo apt-get install hhvm-nightly-dbg