[Bug 242835] concurrency issue when building kernel with 'make -j8': make[5]: make[5]: don't know how to make opt_global.h. Stop

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 02 Jan 2025 16:31:29 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242835

John Hein <jcfyecrayz@liamekaens.com> changed:

           What    |Removed                     |Added
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                 CC|                            |jcfyecrayz@liamekaens.com

--- Comment #5 from John Hein <jcfyecrayz@liamekaens.com> ---
I just got this when doing 'make buildkernel', also with -j8, on a 13.3-system
(trying to update to 13.4-stable; buildworld was fine). Both /usr/src and
/usr/obj were on NFS in this case (and /usr/src was mounted read-only - not
that it makes a difference for this problem).

I tried bmake meta mode (e.g., WITH_META_MODE=yes in /etc/src-env.conf) without
-DNO_CLEAN just to see if it would get a successful buildkernel.  It didn't
(although -DNO_CLEAN and WITH_META_MODE=yes does succeed, but that's not much
more information than comment 3 which says buildkernel with -DNO_CLEAN worked).

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