[PATCH v3 2/2] elf: Add GNU_PROPERTY_1_NEEDED check

[Florian Weimer]

* H. J. Lu:

>> >> For (4), I think we need to set a different flag (or perhaps even
>> >> flags), and be really careful about what we do.  I think an output file
>> >> that is an executable will never require indirect-extern-access, but it
>> >
>> > What did you mean by that?  We need to compile executable with
>> > -fno-direct-extern-access for the whole scheme to work.
>>
>> indirect-extern-access imposes a requirement on executables, but
>> building an executable to comply with the new requirements will not
>
> That is correct.
>
>> impose anything on the rest of the link.  I do not see the markup
>> covering that.
>
> The absence of the marker tells ld.so that copy relocation against
> protected symbols in the executable is incompatible with the shared
> library with the protected symbol AND the marker.

Maybe I don't completely understand the direction in which is is moving.

Is the idea to phase out copy relocations in general?  Or just disable
them for protected symbols?

Thanks,
Florian