Quoting "Joseph S. Myers" <joseph@codesourcery.com>:

> I think Interix and SCORE should be included, but probably only one of
> Solaris 8 and Solaris 9 needs to be included for each of x86 and SPARC
> since the targets don't appear significantly different - so no need to
> include Solaris 8 at all if you include Solaris 9 for both x86 and SPARC.

All right, amended patch attached.

> It's up to the people who volunteered to maintain Interix and SCORE to get
> them into a state that builds cleanly - and you can make sure they are
> CC:ed on the relevant bugs and point out that without fixes the targets
> will be removed later in 4.7 development.

Bug 47096 already exists for the Interix failure; no Interix maintainer is
listed in MAINTAINERS.
I've filed Bug 48595 for score-elf.