[CMake] getting all the function names

[Rolf Eike Beer]

> I'm starting to use cmake and I will have to rely on it pretty much in
> the future.
>
> I'm a bit overwhelmed by the quantity of variables / functions, is there
> a way
> to get an automatic list of all of them?
>
> It would be nice to improve the cmake-mode.el (for emacs) to recognise
> as much as possible,
> and propose some completion possibly.
>
> Also a nasty grep of the source code that generates some static list
> might be fine...

cmake --help-command-list

Eike