Re: 01/01: gnu: fftw: Build SIMD codelets.

[Mark H Weaver <mhw@netris.org>]

Hi Eric,

Eric Bavier <bavier@cray.com> writes:

> Ok, if you feel confident, that's fine with me.
>
> Otherwise, I have a patch that I've tested on x86-64, and in the
> middle of testing for armhf that I can push in a few hours.  I could
> easily add a commit that remove the "--enable-armv7a-cntvct" flag.

Sorry for the duplicate work, but I already pushed my fixes in commit
69d5909e032e2fba57814ea9db52389d384d9341 to core-updates.  I tested them
on x86_64, but nowhere else.  It's not ideal, and I certainly wouldn't
do such a thing on 'master', but given the large number of affected
builds and my uncertainty about when you would fix it, I didn't want to
wait any longer.

FYI, I also removed "--enable-armv8-cntvct-el0" on 64-bit ARM, because
<https://github.com/FFTW/fftw3/blob/master/README-perfcnt.md> suggests
that as on 32-bit ARM, the relevant instruction is not normally
available from user mode.

I removed "--enable-mips-zbus-timer" on MIPS as well, because I suspect
that it's not supported on Loongson devices, although I'm not certain.

If you see any problems with my commit, please let me know.

     Thanks!
       Mark