On Tue, Feb 09, 2021 at 07:47:00AM +0100, Richard Biener via Gcc-patches wrote:
> On February 8, 2021 10:44:26 PM GMT+01:00, Mikael Pettersson via Gcc-patches
> <gcc-patches@gcc.gnu.org> wrote:
> >PR98860 is a gcc-11 regression where bootstrap fails on Windows since
> >the switch to enable DWARF5 by default. The symptoms are that
> >executables generated by the stage1 compiler fail to run with "Exec
> >format error", which confuses subsequent configure steps and causes
> >hard errors. This happens even with the very latest binutils master.
> >
> >Fixed by updating SUBTARGET_OVERRIDE_OPTIONS to set dwarf_version to 4
> >unless the user explicitly requested another version. I see some other
> >targets did the same.
> >
> >Tested on Cygwin64 and mingw-w64.
> >
> >Ok for master?
>
> It might be better to expose the default via configure (I've heard desires to
> control that elsewhere).
But also it would be better to see some analysis what exactly and why
doesn't work.
What program emits that Exec format error message and why.
Jakub
