Re: build system rules & algorithms

[Paul Smith]

On Fri, 2009-06-12 at 22:31 -0400, Eli Zaretskii wrote:
> > Date: Thu, 11 Jun 2009 22:27:48 -0400
> > From: Mike Shal <address@hidden>
> > Cc: address@hidden
> > 
> > Is there a better way to benchmark it to figure out the bottlenecks?
> 
> One way would be to compile and link Make with -pg, invoke Make as you
> always do in this project, and then run gprof on the resulting profile
> data.  Feel free to share the results here.

You can also use valgrind (if you're running on Linux anyway).  I've
used it for memory examination but I'm pretty sure there's a profiling
tool available for it as well.

The trick with both of these is that if you have a recursive make you'll
have to figure out a way to combine the results; I don't think either of
them have that ability natively, which is too bad.  Maybe someone's
already done this.  If you have a non-recursive build environment it's
significantly simpler of course.

-- 
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