ponscripter-fork build for steam.
The machine I used was running 32-bit ubuntu server, 12.04. I think it needs to be 32 bit to easily do these steps or else there's some issues with the configure script.
sudo apt-get install git build-essential automake
wget http://media.steampowered.com/client/runtime/steam-runtime-sdk_latest.tar.xz
tar xvf steam-runtime-sdk_latest.tar.xz
cd steam-runtime-sdk*