[CMake] make debug

[Hector Franco Penya]

Hi
I´m a beginner in CMake
I´m trying to find the way to write the CMakeLists.txt files for
permit use a "make debug" later?
I find in the cmake book a lot of flags variables, but i don´t know
how to make cmake behave different when you type "make all" and when
you type "make debug"

and if is possible:
Are something like "cmake clean"???

Thanks every body for you pacience.