On Thu, Dec 02, 2021 at 02:58:52PM +0100, Florian Weimer wrote:
> * Daniel P. Berrangé:
> 
> >
> > The same srpm builds fine in F35 build roots, but fails in F36 build
> > roots with bizarre make errors.  make appears to "loose" a bunch of
> > the rules in the makefile, despite them still actually existing when
> > I dump a copy of the makefile contents immediately before running
> > make. It is as if it sees only partial or corrupt content for the
> > makefile when it reads it.
> 
> Welcome to the club:
> 
>   [F36] OpenJDK fails to build (in virtualized env like koji builders)
>   <https://bugzilla.redhat.com/show_bug.cgi?id=2026399>
> 
> I'm beginning to suspect a bug in the glibc string functions. 8-(
> 
> I've been staring at the assembler code for a bit, but I don't see it.

If anyone else is seeing wierd build failures in F36 rawhide,
I'd encourage trying to set this env variable in the specfile
as a temporary workaround:

  export GLIBC_TUNABLES=glibc.cpu.hwcaps=-AVX512VL

This has allowed EDK2 to build successfully.

Regards,
Daniel
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