Split up toplevel library-disabling cases

[Michael Eager]

Joseph S. Myers wrote:
> This patch, relative to a tree with
> <http://gcc.gnu.org/ml/gcc-patches/2011-03/msg02027.html> (pending
> review) applied, continues toplevel configure cleanup by splitting the
> disabling of some libraries into separate case statements for those
> libraries.  Separating the logic like this brings things closer to the
> desired state of this configuration being in fragments in
> subdirectories rather than hardcoded directly in the toplevel
> configure script, as well as making it easier to clean up this logic
> where the directory disabling is not in fact appropriate.

This sounds like a good idea.

> Target maintainers: I'd like to understand why it is necessary to
> disable libssp for AVR, AIX and Microblaze

I believe that at some time in the past libssp failed to build for
MicroBlaze, but I don't recall the details.  It currently builds
without error, so disabling it for MicroBlaze is no longer needed.

-- 
Michael Eager	 eager@eagercon.com
1960 Park Blvd., Palo Alto, CA 94306  650-325-8077