Hi, On Sat, 2015-08-15 at 14:08 +0100, Simon McVittie wrote: > (debian-mips: please keep me and the bug in Cc if replying.) > > On Wed, 28 Jan 2015 at 08:00:53 +0100, roucaries bastien wrote: > > Smell like an openmp bug.... ny memory they are a enviroment variable to > > disable openmp. > > I tried building with --disable-openmp on a mips porterbox > (minkus.debian.org, which I believe is a dual Cavium Octeon II with no FPU, > the same as the buildds where imagemagick has been failing).
Yes, minkus and mips-aql-* all run identical hardware and do not have
FPUs (unfortunately).
> Unfortunately building with --disable-openmp doesn't seem to help.
>
> On Thu, 29 Jan 2015 at 19:59:45 +0100, Bastien ROUCARIES wrote:
> > try to add to convert command line "-limit thread 1"
>
> Sadly that doesn't seem to help either.
>
> > On Fri, Jan 30, 2015 at 2:37 PM, Dejan Latinovic
> > <dejan.latino...@imgtec.com> wrote:
> > > did anyone tried to wait some longer time to see if command will execute?
> >
> > No, but the build machines wait for a pretty long time before
> > killing (5 hours), and I've checked that it uses the proc at 200%. We
> > can't burden the build machines like that...
>
> The latest experimental build (which adds some "echo", to stop sbuild
> killing the build process after 5 hours of apparent inactivity) took
> 19 hours. That's longer than gcc-5 took on the same hardware.
>
> While doing test builds yesterday evening, I was able to compile
> imagemagick more than once, so it can't have taken longer than 2 or 3 hours;
> assuming the porterbox and the buildd have a similar spec, that means
> converting a SVG to a PNG 14 times is taking at least 16 hours.
> That seems unusably slow to me. It's entirely possible that imagemagick
> built for mips is currently only really useful on mips hardware that has
> a FPU. Unfortunately, the mips buildds don't seem to have FPUs.
>
> mips porters: how common are FPUs expected to be among mips machines
> where Debian will run?
I have no numbers but I would guess that most of the machines that run
the big endian port are network hardware which don't have FPUs.
> Also, is it an ABI break for a mips library to be built with -msoft-float?
Yes the ABI is different - you need a recompiled glibc (at least) to
use -msoft-float.
Thanks,
James
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