by H.G.Muller » 30 Aug 2010, 11:19
On the Debian website you can find binary packages for all architectures. They currently provide 4.4.3 in their 'squeeze' (testing) and 'sid' (unstable) suites, and 4.20100118 in 'experimental'. You can download those, and tell the archiver to install them when it asks you if you want to do this. The GNU Savannah website might also offer binary Debian packages of released versions, I am not sure.
A more versatile way would be to install from source. Then you can really use the latest and best sources, obtained from the git repositories on GNU Savannah or hgm.nubati.net. E.g. from the latter, follow the source-repository link from the home page, select xboard.git, then hgm5 from the listed branches at the bottom of the page. Then download the source by clicking 'snapshot' for the most recent (= uppermost) commit. After having unpacked the download somewhere on your system, go to that directory with a terminal window, and type:
./autogen.sh
./configure
make
sudo make install
and you will have the latest XBoard on your system. Make sure to also install fairymax, (also available from Debian), to not run into the XBoard complaint that it cannot find its default engine...