--disable-shared support

[Joseph Myers]

On Fri, 29 Jun 2018, Florian Weimer wrote:

> I wonder if we should link and run all tests statically which can run
> statically linked, rather than relying on tests opting in explicitly (which
> some do).

I think that's excessive for normal testing, but there should be an easy 
way to run all tests for static linking when desired.

--disable-shared really should only reduce the set of files built and 
installed, and result in some installed and test executables being 
statically linked - it should not have major differences in the build 
process from the default case, and if it does, that sounds like something 
to fix.

-- 
Joseph S. Myers
joseph@codesourcery.com