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From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Thu, 28 Oct 2021 12:08:41 -0700
Message-ID: <CAMe9rOofFfhE27rB9O4kn3e4fBSdBdFr0b6-cTwczWQUtbxD2g@mail.gmail.com>
Subject: Re: [PATCH] Add GNU_PROPERTY_1_GLIBC_2_NEEDED
To: Joseph Myers <joseph@codesourcery.com>
Cc: GNU C Library <libc-alpha@sourceware.org>,
 Binutils <binutils@sourceware.org>, 
 LLVM Dev <llvm-dev@lists.llvm.org>, GCC Development <gcc@gcc.gnu.org>, 
 GNU gABI gnu-gabi <gnu-gabi@sourceware.org>
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On Thu, Oct 28, 2021 at 10:43 AM Joseph Myers <joseph@codesourcery.com> wrote:
>
> On Wed, 27 Oct 2021, H.J. Lu via Libc-alpha wrote:
>
> > Linker adds glibc versions in GNU_PROPERTY_1_GLIBC_2_NEEDED to the
> > .gnu.version_r section and removes GNU_PROPERTY_1_GLIBC_2_NEEDED note
> > when generating shared libraries and executables.
>
> Note that there is no guarantee that a new glibc version actually has any
> symbols in libc at the corresponding symbol version (there are no
> GLIBC_2.20 symbols in any ABI test baseline for any architecture, for
> example).  If it happens not to, will the symbol version exist at all to
> satisfy this check?
>

Then we need to add a new glibc version if it happens.


-- 
H.J.