make "make install" accept defaults

[n dhert]

When installing gnome from the ports
# make install clean
installs a few hundred packages and displays dozens and dozens times a
configuration window
which I always answer by hitting TAB key to move to OK button and then
<enter>.
Now this installation is already busy for 7 hours (when will it end?) ...
keeping me locked to my PC ...
How to specify   make install clean ......   witj extra options so that is
will answer a configuration window autoamtically
to always accept all the defaults so that you can make an Gnome installation
in an unattended way?