[MOAB-dev] moab/ParallelComm.hpp include order

[Vijay S. Mahadevan]

Can you try including moab/MOABConfig.h directly in your test before
ParallelComm and see if that resolves issues ?

ParallelComm includes Interface.hpp which in turn includes
MOABConfig.h. If you are including some other MOAB header before
these, MOAB_HAVE_MPI might not be defined.

Vijay

On Mon, Nov 2, 2015 at 3:00 PM, Nico Schlömer <nico.schloemer at gmail.com> wrote:
> It's a little convoluted with Trilinos includes right now, I'm trying to
> generate a minimal example.
>
> --Nico
>
> On Mon, Nov 2, 2015 at 10:00 PM Vijay S. Mahadevan <vijay.m at gmail.com>
> wrote:
>>
>> Nico, can you give an example ? What else did you include before
>> ParallelComm to get such an error ? I am guessing this has to do with
>> how moab/MOABConfig.h gets included since that's where MOAB_HAVE_MPI
>> is defined.
>>
>> Vijay
>>
>> On Mon, Nov 2, 2015 at 2:47 PM, Nico Schlömer <nico.schloemer at gmail.com>
>> wrote:
>> > When playing with MOAB, I found that if I include the header
>> > ```
>> > #include <moab/ParallelComm.hpp>
>> > ```
>> > after something that's also using MPI, I'm getting strange compilation
>> > errors of the kind
>> > ```
>> > error: ‘MPI_COMM_WORLD’ was not declared in this scope
>> > ```
>> > Has anyone else experienced this?
>> >
>> > Cheers,
>> > Nico