When a program is installed from source using configure, make, make install, the package managers (dpkg, aptitude, apt, and the gui ones) don't see it. What is the best way to uninstall it later? Can the directories and files just be deleted? (Thanks to not having a messy kluge called a 'registry'). This may leave orphaned libraries etc. Specifically I want to delete gnump3d.
If the files and libraries are located all over the filesystem, then it's difficult to delete the program. But if all files are in just one directory, you can simply delete the directory.
Sometimes you get lucky aswell and the source code has a option to uninstall. if you still have the source directory (or download a new one) check the Makefile for options, there might be a "Uninstall" or "Remove" option.
