Install GMP (http://gmplib.org), Cmake >= 2.8, Python3

Get CADO-NFS 2.2.0 from http://cado-nfs.gforge.inria.fr

$ tar xf cado-nfs-2.2.0.tar.gz

$ cd cado-nfs-2.2.0

$ make

Run the example from README:

$ ./cado-nfs.py 90377629292003121684002147101760858109247336549001090677693

Ask Paul Zimmermann (Paul.Zimmermann@inria.fr) if this does not work.