#. Use git to grab the files from github, using one of the workflow ideas outlined by gitwash.

#. Extract Makefile that will build the ATLAS source tree: Decide where you wish to create the ATLAS source tree. This directory should not presently exist, since the Makefile is going to create it for you. Create the source tree with the command:

make srcdir=<your chosen directory>

if srcdir is not given the Makefile creates a directory TEST in the math-atlas directory (i.e. srcdir defaults to ./TEST).

1. Create ATLAS source tree: cd to your srcdir and issue make to build the ATLAS tree. After the tree is built, ./atltar.sh will build the standard tarfile from the ATLAS source tree generated by make.

# Extract: Read all about extract in order to understand why I use basefiles, and what extract is doing when creating your source tree.