On Sun, Sep 23, 2018 at 8:11 PM Tim Coote
<tim+fedoraproject.org(a)coote.org> wrote:
Thanks Peter. I can understand that policy. I’ll try to chase down the relevant magic
number, then.
fwiw, the resin.io approach worked well for smallish builds as it means that we can set
up CD pipelines on any cloud. An emergimg issue is going to be, I suspect, that some of
our upstream Raspberry pi software will be only built for ARMv7. I’ll keep an eye out for
the proportion of pypi wheels that are armv7 vs aarch64, and try to encourage wheel
builders, and other binary builders to support both ;-)
Let me know if you run into any issues around that, Arm and other
places may be able to assist us with issues with packages in pypi.
> Tim
>
> > On 23 Sep 2018, at 09:34, Peter Robinson <pbrobinson(a)gmail.com> wrote:
> >
> > Hi TIm,
> >
> >> We’ve been building packages for Raspbian; specifically varous Python
wheels. The approach has been to use x86 based cloud vms with Resin.io’s docker stuff
‘resinio-xbuild&QEMU’ (
http://bit.ly/2Ark1KI). This spins up a docker container within
the vm that can run some commands in a qemu cpu emulator and others in the native cpu
architecture of the host. However, given Raspian’s history, the images are all for 32bit
ARM (v7).
> >>
> >> Rather that dig out the magic for aarch64, I thought I’d ask whether the
fedora build process uses this or another approach for building the binaries, to see if
there are any other ideas that are worth checking.
> >
> > Fedora uses native compilation for all architectures and actually has
> > a policy to do so, the cross toolchain is only really supported for
> > thinks like the kernel/U-Boot and other such "not userspace" style
> > binaries. I'm sure there are tools that would allow that style of
> > build but the only one I know of that has this sort of thing is OBS
> > (Open Build Service) from the SUSE guys, I'm not sure whether that
> > extends to containers or is only rpms.
> >
> > Peter
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