[MOAB-dev] Disable fortran in moab-5.0.0

[Vijay S. Mahadevan]

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?
>>
>>