Essentials: Packages needed to build an image on a headless system:

     $ sudo apt-get install gawk wget git-core diffstat unzip texinfo \
     build-essential chrpath
                        

Graphical Extras: Packages recommended if the host system has graphics support:

     $ sudo apt-get install libsdl1.2-dev xterm
                        

Documentation: Packages needed if you are going to build out the Yocto Project documentation manuals:

     $ sudo apt-get install make xsltproc docbook-utils fop
                        

ADT Installer Extras: Packages needed if you are going to be using the Application Development Toolkit (ADT) Installer:

     $ sudo apt-get install autoconf automake libtool libglib2.0-dev