While editing a CMake file, how to turn off smart indentation?

[Yaron Cohen-Tal]

Hi,

I just want each line to get the same indentation as the previous line, and
that TAB would indent 4 spaces. For C++ I managed it with:

    (setq-default indent-tabs-mode nil)
    (setq-default c-syntactic-indentation nil)
    (setq-default c-basic-offset 4)

In my `.emacs`, but for CMake files Emacs just indents the lines
automatically according to its own rules, and TAB has no effect at all.

Thanx,
Yaron