[Paraview] Compilation error under Linux with MPI and Python

[Armin Wehrfritz]

Yes, the patch addresses the problem. Just finished the compilation for 
openmpi 1.7.2 and everything seems fine (i.e. no errors occurred).

Thanks!

-Armin


On 02/10/2014 04:54 PM, Utkarsh Ayachit wrote:
> Does the attached patch address the problem?  We may need to duplicate
> the code for each of the modules.
>
> On Thu, Feb 6, 2014 at 5:11 AM, Armin Wehrfritz <dkxls23 at gmail.com> wrote:
>> The problem actually occurs only for openmpi versions > 1.6, I successfully
>> compiled now ParaView under openSUSE 12.3 (openmpi 1.6).
>>
>> I also found a quick-and-dirty, workaround for openmpi 1.7.2 by manually
>> adding libdl to the libraries in CMakeCache.txt:
>>>
>>>
>>> MPI_CXX_LIBRARIES:STRING=/usr/lib64/mpi/gcc/openmpi/lib64/libmpi_cxx.so;/usr/lib64/mpi/gcc/openmpi/lib64/libmpi.so;/usr/lib64/libdl.so
>>>
>>> MPI_C_LIBRARIES:STRING=/usr/lib64/mpi/gcc/openmpi/lib64/libmpi.so;/usr/lib64/libdl.so
>>
>>
>> Maybe a ParaView developer can add libdl to the linking targets for mpi4py
>> to fix the problem properly.
>>
>> -Armin
>>
>>
>>
>> On 02/06/2014 05:02 AM, Orion Poplawski wrote:
>>>
>>> On 02/05/2014 01:14 PM, Armin Wehrfritz wrote:
>>>>
>>>> Hi,
>>>>
>>>> I get this error when compiling Paraview 4.1.0 under Linux x64:
>>>>
>>>>> [  230s] CMakeFiles/mpi4py.MPI.dir/src/MPI.c.o: In function
>>>>> `OPENMPI_dlopen_libmpi':
>>>>> [  230s] MPI.c:(.text+0x6eb1): undefined reference to `dlopen'
>>>>> [  230s] MPI.c:(.text+0x6ecd): undefined reference to `dlopen'
>>>>> [  230s] MPI.c:(.text+0x6ee3): undefined reference to `dlopen'
>>>>> [  230s] MPI.c:(.text+0x6ef9): undefined reference to `dlopen'
>>>>> [  230s] CMakeFiles[  4%] /mpi4py.MPI.dir/src/MPI.c.o: In function
>>>>> `__pyx_pf_6mpi4py_3MPI_16Init':
>>>>> [  230s] MPI.c:(.text+0x1349b): undefined reference to `dlopen'
>>>>> [  230s] CMakeFiles/mpi4py.MPI.dir/src/MPI.c.o:MPI.c:(.text+0x135bd):
>>>>> more undefined references to `dlopen' follow
>>>>> [  230s] collect2: error: ld returned 1 exit status
>>>>> [  230s] make[2]: *** [lib/site-packages/mpi4py/MPI.so] Error 1
>>>>> [  230s] make[1]: ***
>>>>> [ThirdParty/mpi4py/vtkmpi4py/CMakeFiles/mpi4py.MPI.dir/all] Error 2
>>>>> [  230s] make[1]: *** Waiting for unfinished jobs....
>>>>
>>>>
>>>> The error seems related to newer versions of openmpi in combination with
>>>> and Python.
>>>> When compiling under openSUSE 12.2 (openmpi 1.5.4) everything works
>>>> fine, but under openSUSE 12.3 (openmpi 1.6) and openSUSE 13.1 (openmpi
>>>> 1.7.2) the compilation fails.
>>>>
>>>> Apparently, in newer versions of openmpi, the wrapper doesn't add '-ldl'
>>>> anymore to the linker flags.
>>>> See also here:
>>>> https://svn.open-mpi.org/trac/ompi/ticket/3103
>>>>
>>>> I'm not sure if this should be fixed in openmpi or paraview, but I would
>>>> appreciate any hint on how to fix it.
>>>>
>>>> Best regards,
>>>> Armin
>>>
>>>
>>> It needs to be fixed in paraview - it bundles mpi4py, and mpi4py uses
>>> dlopen(), so mpi4py needs to be linked to -ldl.  Not sure the
>>> appropriate way to fix that in paraview though.
>>>
>>>
>>
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