Beginner's question

pfr — Thu, 20 Nov 2008 15:31:02 GMT

Dear all,

I am trying to use MKL LAPACK function SYEVD to compute the eigenvalues of a small real, symetric matrix. I must say that I am pretty new at using libraries other than those I write. Anyways, I compile all my programs without any problem, but when it comes to link them, I get the error :

undefined reference to `SSYEVD_MKL95'

The program inversion (which is actually a module containing several sub-routines) is compiled with the following options :

ifort -module ./ -assume byterecl -static -align -names as_is -traceback -heap-array -fp-stack-check -check all -C -warn all -I/opt/intel/mkl/10.1.0.015/lib/em64t/ -c inversion.f90

I make use of the two modules mkl95_LAPACK, ONLY: SYEVD,SYEV and USE mkl95_PRECISION, ONLY: WP => SP

As for the linking step, I am not sure what to use to avoid the message stated above. I have tried several combinations of -L and lmkl_**, without much success.

I am really lost here, and I would be gratefull if someone would be kind enough to shed a light on my problems. I am aware that this might just be a compiling problem.

Thanks alot for your help if any.

Pierre-Franois

NB : forgot to precise a few things : I am using Intel Fortran as a compiler (version 10.0) and the latest MKL libraries on a em64t (Xeon) computer.

Re: Beginner's question

TimP — Fri, 21 Nov 2008 07:12:11 GMT

Did you check the instructions on how to build the "95" libraries before attempting to use them?

Re: Beginner's question

pfr — Fri, 21 Nov 2008 08:57:18 GMT

Quoting - tim18

Did you check the instructions on how to build the "95" libraries before attempting to use them?

Dear Tim,

First off, thank you for your reply. I indeed followed the instructions on how to build the "95" libraries (compiled it via the makefile located in the ./interfaces/lapack95/ directory).

I used the following make options : make libem64t interface=lp64

Cheers,

Pierre-Franois

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