Re: Speed of Make 3.79.1

[Paul D. Smith]

%% "David Murrells" <address@hidden> writes:

  dm> We've recently moved to GNU Make 3.79.1 (from 3.77) on Windows NT

Are you using the GNU make versions, or the Cygnus versions?

  dm> and have noticed that on a large project there seems to be a
  dm> noticeable drop in speed.  The drop is very noticeable during the
  dm> automatic dependency checking which is done at the beginning of a
  dm> build.  Our dependency checking is done in a standard emough way
  dm> (a .d file for each object file, with the .d file containing all
  dm> the dependencies, and all the .d file included from a centralised
  dm> makefile).  The examination of all the dependencies in 3.79.1 is
  dm> noticeably slower than it was in 3.77.  I was just wondering if
  dm> anyone else had noticed/investigated this behaviour and could
  dm> provide some pointers in my investigation.

I'm not aware of anything that might be causing this, no.  I also
haven't noticed (or had reported to me) any similar drop in speed on
UNIX systems.

You might check my web pages below for a method of dependency tracking
which might be better for you; certainly it will avoid any time spent
trying to rebuild the makefiles.

Obviously this doesn't solve the underlying problem: if you come up with
some information on why the NT version is slow you might want to share
it with address@hidden which is where many of the
Windows-knowledgeable GNU make users hang out.

-- 
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 Paul D. Smith <address@hidden>          Find some GNU make tips at:
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 "Please remain calm...I may be mad, but I am a professional." --Mad Scientist