Re: What would you like in Ada202X?

["Nasser M. Abbasi" <nma@12000.org>]

On 7/4/2012 12:55 PM, Simon Wright wrote:
> "Nasser M. Abbasi" <nma@12000.org> writes:
>
>> Need to install blas and lapack yourself first. Use Atlas blas.
>
> Since Ada.Numerics.Generic[_Complex]_Arrays already depend on BLAS and
> LAPACK I'd have thought they'd come with GNAT (if not already on the
> platform, as they are with Mac OS X).
>

If I just do gnatmake on the file that uses laplack binding, (the
example test program, which makes direct calls to lapack), it
will complain, during the link process, about missing symbols in blas.
so the linker does not see them.

So that is why I had to point it to linux installed blas/lapack
area to get the link to work as I showed in the command above.

But if I call solve() in Ada to solve Ax=b (which I assume
ends up making a call to lapack SGESV(), then I do not need
to anything other just type gnatmake. I guess it knows then
where these libraries are. Not sure how. It could be using then
the gnat-own supplied copy of blas, may be located in other area
known to gnatmake. I have not looked into it more.

--Nasser