Download
Depending on your Operative System, choose one of these methods of installation:
Unix - GNU/Linux (Sources)
Windows (outdated, need contributor)
Download sdljump-1.0.0-win2.zip
MacOSX (outdated, need contributor)
Download sdljump-1.0.0-osx.tar.gz (Thanks to Tim Douglas)
Other
May other GNU/Linux distrubutions include SDLjump or GNUjump in their official repositories (such as Debian, Ubuntu or Gentoo). Use its specific installation method to get them. Thanks to all the maintainers of those packages.
A full list of the availible downloads (including old releases) can be found here.
Bazaar
You can also obtain the sources directly from the Bazaar repository. This allows you to test the latest development release.
To download them, just type on the console:
bzr branch http://bzr.savannah.gnu.org/r/gnujump/trunk
Note that this is a development version, so it might contain bugs or incomplete features. I only update the installation scripts before every release, so don't try to run make install. To try the CVS sources just go into the sdljump directory and run:
./configure
make clean
make
src/gnujump