directories to check?

[Torsten Mohr]

Hi,

i use "make" in a large project.  Everything works, it is
just very slow.

From invoking "make" to the first command it takes about
a minute.

I think "make" first needs to get an overview of the dependencies
of the files (internal, just in memory) and their time stamps
(external, read from disk).

I don't know how "make" works internally, but would it be an
improvement to tell make right in the beginning to check
the directories a, b, c and so on for _all_ their files and
their content?  Just as a hint?

Make could then first read all the hint-directory contents and
their timestamps and then use these informations as a "cache".


Would that be possible?

Would that be an improvement?

Is something like this maybe already available and i just haven't
yet seen it?


Best regards,
Torsten.