DWARF64 gcc/clang flag discussion

[Richard Biener]

On Tue, Nov 24, 2020 at 8:45 AM Jakub Jelinek <jakub@redhat.com> wrote:
>
> On Mon, Nov 23, 2020 at 06:38:16PM -0800, David Blaikie via Gcc wrote:
> > > I would pick -gdwarf32/-gdwarf64 (are we sure the DWARF spec will
> > > never reach version 32 or 64?
> > > maybe -g32 / -g64 similar to -m32/-m64 are good enough?)
> >
> > Any sense of a good way to break the tie/uncertainty?
> >
> > Alternatively: If Clang picks something here (likely from within this
> > range of candidates - though given I've got a fair bit of say on the
> > Clang side, and if left to me, I'd probably lean heavily on the
> > -fdwarf32/64 side), is it likely that choice will tend to be adopted
> > by GCC? I'd rather not get out of sync, but I expect a bit hard to get
> > a conclusion on the GCC side without patches in progress, etc. Got a
> > sense of who are the people who would likely be deciders/patch
> > approvers for such a naming choice on the GCC side?
>
> Depends on what it would choose.
> I agree with Richard and I'd lean towards -gdwarf32/-gdwarf64, even when
> DWARF 32 is released in 81 years from now or how many, it would use
> -gdwarf-32.

Works for me.  Let's go with -gdwarf32/64.

Richard.

>         Jakub
>