Steve,
>> It looks like a prefix is missing somewhere since it is trying to access
>> /libunwind.so. This
>> may be something messed up in my build area again but I did run autoconf in
>> libgcc so I am
>> not sure what is going on. I'll dig around some more but I thought I would
>> see if this looks
>> familiar to you.
>
> It didn't, but I now see what's going on: gcc/config.gcc has
>
> *-*-linux* | frv-*-*linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu | *-*-gnu*
> | *-*-kopensolaris*-gnu)
> [...]
> tmake_file="t-slibgcc-elf-ver t-linux"
>
> t-slibgcc-elf-ver has the whole shebang necessary to build versioned ELF
> shared libraries, among others SHLIB_DIR which is missing above. This
> should be dealt with by using
>
> tmake_file="$tmake_file t-slibgcc t-slibgcc-elf-ver"
>
> in libgcc/config.host.
>
> t-linux adds
>
> SHLIB_MAPFILES += $(srcdir)/config/libgcc-glibc.ver
>
> but there's more SHLIB_* related stuff in the regular gcc/config ia64
> t-* files used on ia64*-*-linux*:
>
> ia64/t-ia64:SHLIB_MAPFILES += $(srcdir)/config/ia64/libgcc-ia64.ver
> t-libunwind:SHLIB_LC = -lunwind -lc
> ia64/t-glibc:SHLIB_MAPFILES += $(srcdir)/config/ia64/libgcc-glibc.ver
>
> This seems all so involved and entangled with the t-slibgcc* stuff that
> it's probably best to keep out of this patch. I'll try to come up with
> something over the week, either fixing up this patch that it should
> handle things correctly or splitting it out into its own, either
> together with the rest of SHLIB_* handling or separate and on top of
> that.
I had a fresh look and it seems this isn't as bad as it might have been:
the only SHLIB_ macros used are SHLIB_(DIR|OBJS|SOLINK|SLIBDIR_QUAL),
which are all present in libgcc/config/t-slibgcc and are substituted by
configure. While one might split them out of t-slibgcc for reuse by
both libgcc_s and libunwind or also substitute them t-libunwind-elf,
this is probably overkill. Could you please try to insert t-slibgcc in
front of t-libunwind-elf in the ia64*-*-linux* case in
libgcc/config.host?
Thanks.
Rainer
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Rainer Orth, Center for Biotechnology, Bielefeld University
