To install the GINV software under Unix one needs the library gmp (http://www.swox.com/gmp) assembled with C++ support. For the code optimization under a given computer architecture one can properly adjust the C++ compiler options in the file setup.py.
The assemblage of the module ginv is done in line with the standard scheme for Python:
python setup.py build
python setup.py install
python setup.py install --prefix=/home/user/pyginv