RFC: Add DT_FLAGS_2 and DF_2_GNU_IFUNC

[H.J. Lu]

On Fri, May 25, 2018 at 1:35 PM, Florian Weimer <fweimer@redhat.com> wrote:
> On 05/25/2018 07:47 PM, H.J. Lu wrote:
>>
>> This patch extends gABI with DT_FLAGS_2 and DF_2_GNU_IFUNC to indicate
>> that a shared object or executable has IFUNC symbols so that dynamic
>> linker can relocate it early.
>
>
> I don't think this will solve any of the thorny cases.  It may help with
> missing DT_NEEDED entries, but that's only a small subset of the issues, and
> as far as linking against glibc is concerned, such binaries are invalid
> anyway.

In my case, LD_PRELOADed shared library is linked against libc.so.  But there
is no dependency on it by definition.


-- 
H.J.