To easier keep track of programs you install from source there is a program called epkg. I never install any source without it anymore.
Difference against a normal installation is that when you do configure you add the encap directory eith --prefix=/path/to/encap/directory
and after 'make install' you type epkg -i package_name
This procedure makes it easy to have several versions of the same package, and easier removal of programs installed from source.
Just a tip.