Re: Update LTO plugin interface

["H.J. Lu" <hjl dot tools at gmail dot com>]

On Thu, Dec 2, 2010 at 1:28 PM, H.J. Lu <hjl.tools@gmail.com> wrote:
>> For every new routine that the gcc backend generates a new call to, it
>> ought to know which library that routine is defined in, and should be
>> able to add that library after the generated object(s) during the
>> all-symbols-read callback. We really don't want to support arbitrary
>> interposition at that point, because a user-supplied replacement might
>> invalidate some assumptions that were made during optimization.
>>
>
> It sounds reasonable. We have to add those libraries very carefully.
>
> For example, with "gcc -static" on Linux, the reference to glibc should
> be passed to linker as "--start-group -lgcc -lgcc_eh -lc --end-group".
>
>

One approach is to use

[hjl@gnu-6 pr12245-6]$ cat libc_static.a
GROUP (-lgcc -lgcc_eh -lc)
[hjl@gnu-6 pr12245-6]$

instead of  "--start-group -lgcc -lgcc_eh -lc --end-group".

-- 
H.J.