Craig,

Thanks for the explanation - that's consistent with what I saw.

I'll make a mental note to help ensure this gets into the next
release.

Rob

Craig Citro wrote:
> >> On a fresh attempt to build from source, everything went fine.  For
> >> the first attempt, the only difference I can discern is that I had set
> >>
> >> declare -x MAKE="make -j4"
> >>
> >> which in the past has smoothly allowed the build to use both
> >> processors.  Is this the cause of my failure?
> >
> > No idea....
> >
>
> This is a known race condition -- for a patch, see
>
>   http://trac.sagemath.org/sage_trac/ticket/6374
>
> The patch *should* fix the issue, but since it's an intermittent
> problem, it's hard to know that it's *completely* fixed. This was
> merged during 4.0.2, but somehow we mixed up merge trees and it wasn't
> in the final release. I asked to get it into the last release, but it
> still didn't make it ... maybe it'll make it in again soon? I marked
> the ticket "needs review," but as I say on the ticket, it's actually
> been reviewed once. It felt like cheating to make a new ticket and
> list it as "with positive review." :)
>
> -cc
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