Bug#992073: shim-signed: restore arm64 support

[Steve McIntyre <steve@einval.com>]

On Tue, Jun 28, 2022 at 03:08:52PM +0100, Wookey wrote:
>On 2022-04-27 13:40 +0100, Steve McIntyre wrote:
>> I'm hacking on shim right now, setting up local CI etc. to help me
>> with testing. As soon as I can validate that arm64 stuff is working
>> correctly now, I'll take out the hacks I added. Give me a few days...
>
>Gentle prod Steve.
>
>I know how those 'few days' get interrupted. And the offer to help
>remains, but it probably quicker for you to do this than explain to me
>what I'd need to do :-)
>
>Can we have a progress/blockers update?

I'm currently testing builds of the latest shim release (15.6) on all
3 platforms (amd64, i386 and arm64). It now builds reproducibly on
arm64, given a new enough toolchain, so I'll be marking this bug as
closed when I upload.

-- 
Steve McIntyre, Cambridge, UK.                                steve@einval.com
< Aardvark> I dislike C++ to start with. C++11 just seems to be
            handing rope-creating factories for users to hang multiple
            instances of themselves.