[LLVMdev] [lld] supporting gnu linkonce sections in core linking

[Rafael Espíndola]

Have you found .gnu.linkonce in the in the wild? What is producing them?

On 31 March 2014 13:26, Shankar Easwaran <shankare at codeaurora.org> wrote:
> Hi Nick, Bigcheese,
>
> I wanted to add support to support .gnu.linkonce sections in the resolver.
>
> About .gnu.linkonce sections
> .gnu.linkonce sections were primarily present in ELF that was used in a way
> to model COMDAT in early ELF implementations.
>
> We have seen usecases of .gnu.linkonce sections used in various object
> files(mainly libc), and I think its much needed to support this style in lld
> as well.
>
> a solution to support .gnu.linkonce in lld
>
> I was thinking of adding a typeGnuLinkOnce and special case it in the
> Resolver.
>
> Differences between .gnu.linkonce and COMDAT
> The only thing that I see a difference between gnu linkonce sections and
> COMDAT is to raise an error when there is a similar looking section with
> section groups.
>
> Do you see any better design solutions here ?
>
> Thanks
>
> Shankar Easwaran
>
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