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directories to check?

From: Torsten Mohr
Subject: directories to check?
Date: Thu, 8 Sep 2005 11:10:46 +0200
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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,

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