Debugging Kea

Enabling debug symbols

The –enable-debug flag can be useful when developing, since it makes the compiler produce more abundant debugging information that can be read by a debugger.

Some compilers don't document some of the flags, such as clang for -g3. However, practice shows that clang behaves the same way as g++ in that regard. As an experiment, providing -g4 results in ‘error: unknown argument: ’-g4'`, but providing -g3 succesfully compiles, and supposedly puts it into effect.

On top of that, the flag enables log4cplus's own logging, and adds more sanity checks in DNS code.