Retrieve givaro, fflas-ffpack, and from github.com/linbox-team. You can configure LinBox with the autogen.sh script. You can use it exactly the same way ./configure works (execpt for the --help part... :() See here for additional information on configure script.

If you are not sure, run autogen.sh with the minimal options so LinBox can be well configured and then you will get more information with configure --help.

See also HACKING.