Re: ld is broken on ia64

["H . J . Lu" <hjl at lucon dot org>]

On Sat, Nov 17, 2001 at 09:43:00AM -0800, H . J . Lu wrote:
> Bootstrap gcc 3.0.3 20011116, I got
> 
> .libs/string-inst.o:/home/hjl/build/tools/build-ia64-linux/ia64-unknown-linux/libstdc++-v3/include/bits/basic_string.h:238:
> unsupported reloc
> .libs/string-inst.o:/home/hjl/build/tools/build-ia64-linux/ia64-unknown-linux/libstdc++-v3/include/bits/basic_string.h:238:
> unsupported reloc
> collect2: ld returned 1 exit status
> 
> It may be caused by those ELF linker changes.

I believe this patch

http://sources.redhat.com/ml/binutils/2001-11/msg00212.html

breaks ia64, specifically

http://sources.redhat.com/cgi-bin/cvsweb.cgi/src/bfd/elflink.h.diff?cvsroot=src&r1=1.122&r2=1.123

The problem is around line 3864 in elfxx-ia64.c:

              {
                /* If the input section was discarded from the output, then
                   do nothing.  */

                if (bfd_is_abs_section (sym_sec->output_section))
                  r = bfd_reloc_ok;
                else
                  r = bfd_reloc_notsupported;
              }

since we are no longer clearing the relocation type. The relocations
against the discarded sections remains, R_IA64_SEGREL64LSB in an unwind
section. I think we should do something like

http://sources.redhat.com/ml/binutils/2001-10/msg00589.html

That is we have a default and allow each backend to decide what to do
with relocations against the discarded sections.


H.J.