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I think Jed is referring to the fact that configure appears to do all of these checks after doing the compiler, MPI, MathEnv, etc which take a long time. The change would be to check missing external library dependencies before even doing the compiler checks.
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<div>Best,</div>
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<div>Jacob</div>
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<div class="">On Oct 23, 2019, at 4:03 PM, Matthew Knepley <<a href="mailto:knepley@gmail.com" class="">knepley@gmail.com</a>> wrote:</div>
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<div dir="ltr" class="">On Wed, Oct 23, 2019 at 4:59 PM Jed Brown <<a href="mailto:jed@jedbrown.org" class="">jed@jedbrown.org</a>> wrote:<br class="">
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Matthew Knepley <<a href="mailto:knepley@gmail.com" target="_blank" class="">knepley@gmail.com</a>> writes:<br class="">
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> That is an unreliable check for Z. You would not eliminate the case<br class="">
> where you give --with-Z, but the check fails, so Z is not available,<br class="">
> but you do not find out until checking X or Y.<br class="">
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You can verify that Z works in a fraction of a second, but building X<br class="">
may take minutes. Work bottom up, verify everything that is given<br class="">
before building anything.<br class="">
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<div class="">That is exactly what we do now. What are you talking about?</div>
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<div class=""> Matt</div>
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<div class="">What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br class="">
-- Norbert Wiener</div>
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<div class=""><a href="http://www.cse.buffalo.edu/~knepley/" target="_blank" class="">https://www.cse.buffalo.edu/~knepley/</a><br class="">
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