[cmake-developers] why includes the Ninja decency contents sytemheader too?

[Brad King]

On 02/06/2018 10:03 AM, Claus Klein wrote:
> why different default behaviors in Nina and Makefile generators?

The Makefile dependency generation works totally differently and
can't do system headers well at all.  One day perhaps they should
be ported to use a depfile approach too and then a similar switch
could be added.  However, it must continue to support compilers
that don't have any depfile flags.

-Brad