[Bug bootstrap/19364] [4.0 Regression] embedded sparc does not bootstrap

["corsepiu at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From corsepiu at gcc dot gnu dot org  2005-01-20 13:33 -------
(In reply to comment #12)
>
> FYI Ralf tracked down one warning we got linking sparc apps to this:
> 
> >>>I think the cause is sparc/sparc.h's LINK_GCC_C_SEQUENCE_SPEC:
> >>>
> >>>#define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G %L"

> The RTEMS LIB_SPEC includes a "-T linkcmds" which can only show up in the
> final ld command once.  The double inclusion of %L seems to appear and
> disappear from release to release.  3.2.x did not have it.
We had a local fix for 3.*.

> I don't know which target needs this but if it is important to them,
FWIW: IMO, all targets implcitly relying on the sparc/sparc.h's
LINK_GCC_C_SEQUENCE_SPEC are broken.
Grep'ing the sources reveals all major sparc-targets to override this
LINK_GCC_C_SEQUENCE_SPEC, so I don't expect removing it there to do much harm.

Probably, "%G %L %G %L" also is SunOS/Solaris specific and actually does not
belong into sparc.h. Also, I fail to understand how "LINK_GCC_C_SEQUENCE_SPEC"
can be target-cpu specific. It is target-os specific.

> we can override it in rtemself.h.
I don't really like this. IMO, the sparc backend suffers from its SunOS/Solaris
history and should be cleaned up.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19364