Re: [PATCH] audo-detect and use -moutline-atomics compilation flag for aarch64

> Not here:
> $ gcc --version
> gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0
> $ gcc -v --help -Q 2>/dev/null | grep outline-atomics

This needs to be on an arm64 machine.
The outline-atomics flag does not exist when targeting x86_64.
The flag has been back-ported to Ubuntu 20.04 a year and a half ago: IIRC, it went in just before the release in April
2020.

> Did you rebuild the package locally without changing the Debian version?

I have not re-compiled gcc.  The gcc-9.3 is the one distributed as part of Ubuntu 20.04.

If you need access to Graviton2 instances, we have a system of credits that we can use to fund compute time for
open-sourceCI projects. 
Let me know if you are interested in getting those compute credits, and I will take the request to my management.

Sebastian