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From: "tschwinge at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug testsuite/66005] libgomp make check time is excessive
Date: Fri, 02 Jun 2023 10:07:07 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D66005

--- Comment #18 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
(In reply to Iain Sandoe from
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109951#c4>)
> I am also somewhat puzzled by what conditions I need to take advantage of
> the parallel running?
> Darwin has /usr/bin/getconf and AFAICT the number of cpus is reported OK
> both at runtime and during config

(That's not actually relevant for libgomp parallel testing.)

> but it seems to be determined to run a single process.

That's the fail-safe default if there's no 'flock' executable available --
which I suspect is the case on your Darwin systems?  My recent commit
r14-1490-g04abe1944d30eb18a2060cfcd9695d085f7b4752 "Support parallel testin=
g in
libgomp: fallback Perl 'flock' [PR66005]" should've addressed that case (if=
 you
have Perl).=