[Trilinos-Users] [EXTERNAL] Epetra configuration problem detecting dggsvd3 in LAPACK

[Elliott, James John]

Hi Patrick,

You need to add -lgfortran to your link line, or add "gfortran" to your list of required lapack libraries.

For example (my local OpenBLAS build)
export BLAS_LIBRARIES="/home/jjellio3/install/openblas-threaded/lib/libopenblas.a;gfortran"

Then my CMake script has:

-D TPL_ENABLE_BLAS=ON \
   -D TPL_BLAS_LIBRARIES:PATH="${BLAS_LIBRARIES}" \
-D TPL_ENABLE_LAPACK=ON \
   -D TPL_LAPACK_LIBRARIES:PATH="${BLAS_LIBRARIES}" \


James

________________________________________
From: Trilinos-Users <trilinos-users-bounces at trilinos.org> on behalf of Widener, Patrick <pwidene at sandia.gov>
Sent: Thursday, March 2, 2017 12:38 PM
To: trilinos-users at trilinos.org
Subject: [EXTERNAL] [Trilinos-Users] Epetra configuration problem detecting dggsvd3 in  LAPACK

Hello -

In my Trilinos CMake step, Epetra’s check for dggsvd3 in my installed LAPACK (3.6.1) is failing due to a missing symbol from libgfortran. This is causing Epetra to believe I have an older version of LAPACK and consequently a later link error trying to reference dggsvd from Epetra_LAPACK::GGSVD.

The curious thing is that this occurs for me when using mpicc from OpenMPI, but the dggsvd3 check passes and so no link error with mpicc from MPICH.

Has anyone else experienced this? I’m on Mac (El Capitan), gcc 4.9 for both Open MPI and MPICH, Open MPI 1.10 and MPICH 3.3. I pulled from the Trilinos repo last week.

thanks!
patrick

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