[MOAB-dev] Disable fortran in moab-5.0.0

[Paul Wilson]

Hi Vijay,

That makes sense.  I have just tested it quickly without the mangling 
option to configure and it worked fine.

I can take a look at the CMake addition, if you like - this is 
definitely very helpful for me!

Paul


On 11/15/2017 06:32 PM, Vijay S. Mahadevan wrote:
> Paul, there is another reason why I added the
> --with-fc-mangling-suffix option. This is for the corner case when you
> want to use external BLAS/LAPACK, without Eigen and without Fortran
> support. This is the only way for us to decipher what the mangling
> should be. Of course, it only covers the case of no underscore, one or
> double underscore suffixes. Not any changes to case etc.
>
> Anyway, hope that gives another reason why we need the changes related
> to this. On a separate note, none of our builds on develop have broken
> yet and so I'll submit a PR for this tomorrow. If there are other
> comments or feature requests, let me know.
>
> Vijay
>
> On Tue, Nov 14, 2017 at 11:05 PM, Vijay S. Mahadevan <vijay.m at gmail.com> wrote:
>> Hi Paul,
>>
>> There are a couple of protos (CN/ that get included in some source
>> files. I haven't fully tested this branch on all our builds yet but if
>> all of them do pass, I believe we may not need mangling. We are of
>> course talking about the case of not having a fortran compiler,
>> whether you want BLAS or not.
>>
>> Vijay
>>
>> On Tue, Nov 14, 2017 at 10:34 PM, Paul Wilson <paul.wilson at wisc.edu> wrote:
>>> 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?
>>>>>>
>>>>>>
>>> --
>>> -- ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ --
>>>
>>> Paul P.H. Wilson
>>> Grainger Professor of Nuclear Engineering
>>> 608-263-0807
>>> paul.wilson at wisc.edu
>>> 443 Engineering Research Bldg
>>> 1500 Engineering Dr, Madison, WI 53706
>>> calendar: http://go.wisc.edu/pphw-cal
>>>
>>> Computational Nuclear Engineering Research Group
>>> cnerg.engr.wisc.edu
>>>

-- 
-- ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ --

Paul P.H. Wilson
Grainger Professor of Nuclear Engineering
608-263-0807
paul.wilson at wisc.edu
443 Engineering Research Bldg
1500 Engineering Dr, Madison, WI 53706
calendar: http://go.wisc.edu/pphw-cal

Computational Nuclear Engineering Research Group
cnerg.engr.wisc.edu