[MOAB-dev] Disable fortran in moab-5.0.0

[Paul Wilson]

Hi Vijay,

Maybe I'm missing something, but if building without BLAS/LAPACK, what 
is the mangling still needed for?

Paul


On 11/14/2017 07:58 PM, Vijay S. Mahadevan wrote:
> Hi Lorenzo,
>
> Can you give the branch "vijaysm/osx-blas-lapack" a try on your
> machines ? I've added several additional configure options to control
> the mangling (when fortran is disabled), and an option to disable
> BLAS/LAPACK (only if Eigen is present). A combination of:
> --disable-blaslapack --with-eigen3 --with-fc-mangling-suffix="_"
> should give you the right result. Let me know if this gives you the
> result of not requiring a Fortran compiler.
>
> I will merge this branch to develop and run our buildbot tests on
> various configuration combinations. Paul, I'll also make some
> modifications to CMake if this approach is acceptable. Let me know.
>
> Iulian, any comments ?
>
> Vijay
>
> On Fri, Nov 10, 2017 at 5:14 PM, Vijay S. Mahadevan <vijay.m at gmail.com> wrote:
>> Paul, as Lorenzo mentioned, we need to modify configuration to enable
>> this cross option. I can look into that as well.
>>
>> The more combinations/options we add, the more complicated the
>> configuration becomes. While things do become seemingly flexible, I
>> just want to make sure it doesn't become a maintenance nightmare later
>> on. Hence the decision originally to just make BLAS/LAPACK mandatory
>> and not allow Eigen (with/without external BLAS). The implication on
>> FC here was a side effect unfortunately of that decision.
>>
>> Vijay
>>
>> On Fri, Nov 10, 2017 at 3:29 PM, Lorenzo Botti <bottilorenzo at gmail.com> wrote:
>>> Dear Paul,
>>> I don’t think it’s actually possible. The build system should be modified to
>>> account for such a configure option.
>>> Anyway this is also what I need, a fix to run MOAB on OSX without fortran.
>>> On my laptop I’m not interested on performance but I do most of the
>>> development.
>>> Installing a fortran compiler on OSX is a pain, as far as I know this forces
>>> me to use gcc instead of clang.
>>> Accordingly I would need to use a package manager like macports or homebrew,
>>> or to compile gcc myself.
>>> A fallback on Eigen would be really welcome.
>>>
>>> Bests
>>> Lorenzo
>>>
>>> On 10 Nov 2017, at 21:19, Paul Wilson <paul.wilson at wisc.edu> wrote:
>>>
>>> I'm not sure if I follow how to actually do what you are suggesting.  If I
>>> wanted to rely on Eigen instead of both BLAS/LAPACK, is there a set of
>>> options I can pass to either autoconf or CMAKE to do that?
>>>
>>>

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Paul P.H. Wilson
Grainger Professor of Nuclear Engineering
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