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Re: Useless `DT_NEEDED` tags after Garbage Collection
Hi Alan,
On 10/19/18, Alan Modra <amodra@gmail.com> wrote:
> On Fri, Oct 19, 2018 at 12:22:26PM +0200, Christoph Conrads wrote:
>> If both `--entry` and `--undefined` are missing, I get the following
>> error:
> [snip]
>> > ld: gc-sections requires either an entry or an undefined symbol
>
> OK. It used to be that -r --gc-sections needed a root symbol to start
> marking kept sections, but that isn't really necessary with
> --gc-keep-exported since all defined default visibility or protected
> visibility symbols are roots.
>
> I'll commit a patch to fix that, but you'll need to continue
> specifying at least one --entry or --undefined option with older
> linkers. Any --entry will work and most likely continue to do so.
> One good option is "--entry=0".
Thank you for the quick help.
Christoph Conrads