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Old   July 27, 2017, 11:05
Question LAPACK with SU2
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Joel Ho is on a distinguished road
Hi there,

I have looked at an earlier post regarding how to enable LAPACK in SU2 and am following the steps. (Link: Using LAPACK in SU2).

Firstly, I compiled blas, lapack and lapacke, and was able to call the functions in LAPACKE/lapacke.h.

I then ran configure with the following options:
--enable-mpi --with-cc=/path/to/mpicc --with-cxx=/path/to/mpicxx
The following message was printed after running configure, confirming that I have the required include file and library:
checking for /path/to/lapack/liblapacke.a... yes
checking for /path/to/lapack/LAPACKE/include/lapacke.h... yes
I then added a line "#include <lapacke.h>" in one of the header files in "SU2/Common/include" just to test if LAPACK is indeed enabled on SU2.

When running make, the following error appears:
fatal error: lapacke.h: No such file or directory
Even if I use the full path in the header file, i.e. "#include "/path/to/lapack/LAPACKE/include/lapacke.h", the compiler is unable to find the function when I called LAPACK_dgetrf in the .cpp file. Seems like the include and library paths are not set up correctly in the Makefile.

I am not sure what is missing here and what else do I need to do to get access to the LAPACK subroutines. Any help would be greatly appreciated.

I am using SU2 version 5.0.0 on my Thinkpad with Ubuntu 16.04.2 installed. Also, the LAPACK version is 3.7.1.

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Old   July 31, 2017, 13:20
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I found a way around it in case anyone runs into the same problem. I'm still a beginner with C++ so it may seem trivial. Anyways...

Running ./configure with the following options on top of those needed for MPI etc. worked for me (with gnu compiler):
CPPFLAGS="-DHAVE_LAPACK -I/path/to/lapack/LAPACKE/include"
LIBS="-llapacke -llapack -lblas -lgfortran"
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compilation error, lapack, linking, su2

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