dolfin team mailing list archive

["Garth N. Wells" <gnw20@xxxxxxxxx>]

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

>> 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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