Link with correct values-*.o files on Solaris (PR target/40411)

[Rainer Orth]

Hi Joseph,

> On Tue, 30 Jan 2018, Rainer Orth wrote:
>
>> So it seems the following snippet
>> 
>> #define STARTFILE_ARCH_SPEC \
>> [...]
>>      %{std=c9*|std=iso9899\\:199409|std=c1*:values-Xc.o%s; :values-Xa.o%s} \
>> 
>> seems like the right thing to do, as you said.
>
> That version would need updating when we add -std=c2x (once there's a C2x 
> working draft with features being added to it).  If you use std=c* instead 
> of separate std=c9* and std=c1* you'd avoid needing such a change - but 
> then of course it would cover -std=c++* for C++.

I know, that why I used the current form.  Admittedly it's a maintenance
problem (likely to be forgotten in the future).  If we add in -ansi, we
can just as well add -std=c++* (thus -std=c*), too.

I guess that's the safest option overall, unless Jonathan has objections
from a C++ standards perspective.

	Rainer

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Rainer Orth, Center for Biotechnology, Bielefeld University