make check build failure (tst-printf-bz18872)

[Joseph Myers]

On Thu, 8 Oct 2015, Roland McGrath wrote:

> > > 2015-10-08  Roland McGrath  <roland@hack.frob.com>
> > > 
> > > 	[BZ #18872]
> > > 	* stdio-common/Makefile ($(objpfx)tst-unbputc.out):
> > > 	Move out from under [$(run-built-tests) = yes] conditional.
> > 
> > That looks wrong.  tst-unbputc.sh uses test_program_prefix to run a newly 
> > built test.
> 
> Oh, it was unrelated.  I failed to notice that.  But why is it wrong?  I
> don't see why we need to avoid defining the targets.  Adding them to
> tests-special is conditionalized, so nothing will depend on that.

In that case it should be OK (but maybe we should be consistent, in 
whatever direction, about when such rules are / aren't conditionalized).

-- 
Joseph S. Myers
joseph@codesourcery.com