Installing a build slave is easy on Debian-like systems: apt-get install buildbot pretty much does the trick. Edit /etc/default/buildbot appropriately to get it to start up at boot-time.

On FreeBSD, it's not too bad, either: pkg_add -r buildbot will install the software, but you still must create the buildbot user. I just add

su buildbot -c "/usr/local/bin/buildbot start /usr/local/buildbot/ccl"

to /etc/rc.local to arrange for start-up. So I'm a fossil. Sue me.

On OpenSolaris, grab buildbot-slave-0.8.2.tar.gz from  http://sourceforge.net/projects/buildbot/files/. Unpack and install it in the usual way (python ./setup.py install). Create the buildbot user. To make it run at startup, you can follow the directions at  http://wadofstuff.blogspot.com/2007/01/smf-manifest-for-buildbot.html. To import the manifest file (after editing it to suit):

# svccfg validate buildbot.xml 
# svccfg import buildbot.xml 

Then, to enable it:

# svcadm enable svc:/site/application/buildbot:default