Hey Gerrit!

 GK> I may be wrong, but my understanding is that "completely" includes
 GK> the kernel and glibc.

If someone running OpenMandriva_Lx were to provide the following information;

-={ /lib/libc.so.6 }=-
GNU C Library (GNU libc) stable release version 2.30.
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Compiled by GNU CC version 9.2.0.
libc ABIs: UNIQUE ABSOLUTE
For bug reporting instructions, please see:
http://www.gnu.org/software/libc/bugs.html>.

From the above we can see I'm still using gcc on aarch64.

Life is good,
Maurice

... Don't cry for me I have vi.
--- GNU bash, version 5.0.11(1)-release (aarch64-raspi3b+-linux-gnu)