make sure you have "geoip" as a dependency (might be something like "geoip-dev" in a deb system.
then add the option "--enable-geoip" while building. i.e.:
./configure --prefix=/usr --enable-geoip --enable-debug -disable-optimize
p.s.
What version are you trying to build? 2.2.1? SVN? if not, upgrade now!