On Wed, Jul 28, 2021 at 3:04 PM Andrew Stubbs <a...@codesourcery.com> wrote:
>
> This patch follows up my previous patch and supports more variants of
> LLVM 12.
>
> There are still other incompatibilities with LLVM 12, but this at least
> the ELF attributes should now automatically tune to any LLVM 9, 10, or
> 12 assembler (It would be nice if one set of options would just work
> everywhere, but no).
>
> LLVM 11 was not tested, but is broken in other ways in any case. LLVM 13
> (dev) needs more work.
>
> Unfortunately, the need for configure tests and the CLI instability
> within the LLVM 12 release branch means that GCC probably needs to be
> rebuilt whenever LLVM is upgraded, even for minor versions.
Is it possible to handle some incompatibilities with command line arguments
to llvm-mc in a wrapper script that could dispatch based on the
installed llvm-mc
version? Or maybe some specs magic that passes down -mllvm-mc-version=XYZ
from a %{llvm-mc-version} specs handler that somehow queries the installed
llvm-mc? Or is the llvm-mc version not enough to decide things? I realize this
still needs adjustments for each new llvm-mc version that pops up.
Richard.
> Andrew
