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

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

------- Additional Comments From ebotcazou at gcc dot gnu dot org  2005-01-20 15:31 -------
> FWIW: IMO, all targets implicitly relying on the sparc/sparc.h's
> LINK_GCC_C_SEQUENCE_SPEC are broken.

I don't think so.  I can tell you for sure that Solaris is not 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.

Note the Linux variant: "%{static:--start-group} %G %L %{static:--end-group}"
which means that the group "%G %L" is repeatedly searched.  Of course the Sun
linker (at least the ancient versions) is not that smart so we need to use the
double inclusion by default.

> 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.

It is actually ABI-specific.  I think the V7 ABI more or less mandates it.

> I don't really like this. IMO, the sparc backend suffers from its
> SunOS/Solaris history and should be cleaned up.

The default values of settings are indeed chosen for Solaris and I don't expect
to change that in the near future.


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