Robert Maynard authored Apr 13, 2023 and Brad King committed Apr 25, 2023

The previously-used `-Werror all-warnings` is not supported by
the NVHPC suite of compilers.  This previously worked since `-Werror`
was being used and `all-warnings` was being excluded.

We thought this was the correct syntax due to incorrect documentation
about `-Werror`, which stated the argument should be space-separated,
while it should actually be separated with `=` or `,`.

Issue: #24665