topic cannot find -lmkl_lapack in Intel® oneAPI Math Kernel Library

cannot find -lmkl_lapack

ridox — Sun, 28 Aug 2011 19:45:18 GMT

Hi everyone,

I am not expert, but i do my best effort.

I have recently installFortran Composer XE 2011 for Linux 64-bits, which camewith Math Kernel Library (MKL).

I am trying to compile a program with the following instruction:

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ifort -O2 -DOPTIMIZE test test.o -L. -L/usr/local/lib -lcfitsio -L/opt/intel/composerxe-2011.5.220/mkl/lib/intel64 -lmkl_lapack -lmkl -lguide -lpthread -lpthread -lpthread

\\n

but ifort complains and gives:

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ld: cannot find -lmkl_lapack

ld: cannot find -lmkl

ld: cannot find -lguide

make: *** [test] Error 1

\\n

I have read thatBLAS/LAPACK routines are now internal to the MKL core library, so there is no separate MKL Lapack library and the customary flag '-lmkl_lapack' is now obsolete and should be removed.

\\n

* So I have tried without the '-lmkl_lapack' flag but doesn't found -lmkl and -lguide

* I tried without any-lmkl_lapack,-lmkl,-lguide but gives: undefined reference to `dpotrf_'

* I change the flags:

-lmkl_lapack -> -lmkl_intel_lp64 but gives same errors.

So, my final question is: How can i change the 'obsolete' flags in order to be compatibleFortran Composer XE and MKL???

Thanks in advance, any suggestion is really appreciate it.

Jorge

cannot find -lmkl_lapack

mecej4 — Mon, 29 Aug 2011 01:30:39 GMT

Was the user library /usr/local/lib/libcfitiso.a compiled for X64 with the same integer/pointer model as was used for producing the object file test.o?

Try the simpler -mkl option instead of specifying which MKL libraries to use. If that does not work, you may consult the MKL Link Line Advisor, to which a link is provided on the MKL forum.

cannot find -lmkl_lapack

Gennady_F_Intel — Mon, 29 Aug 2011 05:40:29 GMT

this is the link to MKL Linker Adviser

cannot find -lmkl_lapack

ridox — Thu, 01 Sep 2011 00:01:57 GMT

Thanks everyone,

cfitsio wasn't the problem.

I used the MKL link line advisor and told me to use:-lmkl_lapack95_lp64

But the same error appears.

At the end I use both flags, the -mkl and the one for the-lmkl_lapack95_lp64

and the problem is gone.

Thanks for your help.