Re: Missing GLIBC_<version> tags on binaries

[Phil Blundell <philb@gnu.org>]

On Tue, 2011-03-01 at 11:47 +0000, Otavio Salvador wrote:
> On Tue, Mar 1, 2011 at 11:35, Phil Blundell <philb@gnu.org> wrote:
> > On Mon, 2011-02-28 at 19:33 +0000, Otavio Salvador wrote:
> >> On Mon, Feb 28, 2011 at 17:17, Phil Blundell <philb@gnu.org> wrote:
> > I just tried linking xfreerdp by hand with gold and the resulting binary
> > seemed to come out fine.  So I think this is indeed a bug in GNU ld.
> 
> Personally I think we need to trace it down (we as project) since it
> can lead to broken and difficult to trace behaviour. It took 3 days
> until I managed to identify the symbol failure.

Yeah, that might be true.  Or we could maybe just switch the default
linker to be gold, at least on targets that it supports. 

> I am far from an expert on linking and GNU ld. For debugging it I'd
> need guidance.

I think the place to start looking would be _bfd_elf_merge_symbol(),
which is in bfd/elflink.c.  This gets called by
elf_link_add_object_symbols() to record the syms that it finds and I
suspect that one or other of those functions is probably doing the wrong
thing.

Or, if you don't want to debug it yourself, you could try to create a
testcase that shows the problem and then file a bug report with binutils
upstream.

p.