dolfin team mailing list archive

[Johannes Ring <johannr@xxxxxxxxx>]

On Wed, Oct 24, 2012 at 12:46 PM, Garth N. Wells <gnw20@xxxxxxxxx> wrote:
> On Wed, Oct 24, 2012 at 11:17 AM, Johannes Ring <johannr@xxxxxxxxx> wrote:
>> On Wed, Oct 24, 2012 at 7:43 AM, Anders Logg <logg@xxxxxxxxx> wrote:
>>> On Tue, Oct 23, 2012 at 05:21:07PM +0200, Johannes Ring wrote:
>>>
>>>> >> There was a typo there, but this also works for me:
>>>> >>
>>>> >>       -D LAPACK_LIBRARIES:FILEPATH=${ATLAS_DIR}/lib/liblapack.a \
>>>> >>       -D BLAS_LIBRARIES:FILEPATH=${ATLAS_DIR}/lib/libatlas.a
>>>
>
> You can't just link to libatlas.a. You also need libf77blas.a

Exactly. I found that out. The patch in the previous post links to
both libatlas.a, libf77blas.a and libcblas.a.

Johannes

>>> This makes the FindLAPACK test pass, but then I get in trouble with
>>> the Armadillo test. The test program is failing with link errors:
>>>
>>> /scratch/fenics-test/lib/liblapack.a(ATL_dgelqf.o): In function `ATL_dgelqf':
>>> ATL_gelqf.c:(.text+0x235): undefined reference to `ATL_dgemoveT'
>>> ATL_gelqf.c:(.text+0x29d): undefined reference to `ATL_dgemoveT'
>>> ATL_gelqf.c:(.text+0x35b): undefined reference to `ATL_xerbla'
>>> etc
>>
>> These are defined in libatlas.a, so I guess it is not linked
>> correctly. I have made a patch for Dorsal that should fix this
>> (attached), at least it worked for me.
>>
>
> I always have trouble with Armadillo, and often can't relate the
> symptom to the cause. Setting
>
>    ARMA_USE_WRAPPER
>
> in the Armadillo CMakeList.txt file usually makes things work for me.
>
> Garth
>
>>> Can you comment out the lines I added at the top of FindLAPACK.cmake
>>> and check whether you can build Armadillo?
>>
>> This is not needed since, when CMAKE_PREFIX_PATH is defined, CMake
>> will automatically search for header files and libraries in the path
>> given by CMAKE_PREFIX_PATH.
>>
>> Johannes
>>
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