[llvm-dev] [PATCH] Add GNU_PROPERTY_1_GLIBC_2_NEEDED

[H.J. Lu via llvm-dev]

On Thu, Oct 28, 2021 at 6:43 AM Florian Weimer <fweimer at redhat.com> wrote:
>
> * H. J. Lu:
>
> > On Wed, Oct 27, 2021 at 11:52 PM Florian Weimer <fweimer at redhat.com> wrote:
> >>
> >> * H. J. Lu via llvm-dev:
> >>
> >> > 1. Some binaries which require new ELF features, like DT_RELR, only
> >> > work with the new glibc binary.  They crash at run-time with the older
> >> > glibc binaries.
> >> > 2. Somes binaries compiled with the new language features, like C2X
> >> > printf specifiers, only generate correct results with the new glibc
> >> > binary.  Since we don't add new glibc versions to the printf function
> >> > family, they generate incorrect results at run-time with the older
> >> > glibc binaries.
> >>
> >> Solaris uses SHT_SUNW_verneed sections for this, not a property note.
> >> Property notes seem the wrong approach for this.  And there is no reason
> >> to make this specific to glibc.
> >>
> >> However, I still very much dislike this proposal.
> >>
> >
> > Can you share your concerns?
>
> See the other thread (mostly on libc-alpha I think).
>

OK.  Let's resolve it in the glibc community first.

Thanks.

-- 
H.J.