PATCH: Fix linker plugin support for gnu linker

[Ian Lance Taylor]

Cary Coutant <ccoutant@google.com> writes:

>>> I'm still not convinced that the new plugin API is necessary -- simply
>>> adding the extra pass-through libraries as needed would fix the
>>> problem. In either case, a gcc driver change is still necessary. That
>>> by itself would fix both linkers with the 1-stage approach, with no
>>> changes to either linker.
>>
>> To be clear, with my proposed patch, a gcc driver change is not
>> required, although a similar patch could be made via a driver change.
>
> Sorry, I was thinking that the LTO plugin needed information from the
> driver about which libraries might need rescanning (for the same
> reason the driver is the one to supply the pass-through options
> currently). With this patch, in fact, we'd eventually be able to
> remove the pass-through options from the gcc driver (once the rescan
> API is known to be universally available), right?

Right.

Ian