[llvm-dev] [PATCH] Add GNU_PROPERTY_1_GLIBC_2_NEEDED

[Florian Weimer via llvm-dev]

* 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).

Florian