CODEWITHSUNDEEP
openmpwindows-subsystem-for-linuxdynamic-linkingintel-mkl
Savrona
Savrona

Reputation: 333

Symbol lookup error with Intel MKL on WSL

I have a C++ project and built it with CMake. I have no problem on Windows. However when I tried it on WSL I got symbol lookup error: /opt/intel/oneapi/mkl/latest/lib/libmkl_intel_thread.so.2: undefined symbol: omp_get_num_procs. On configuration I am not getting any error.

In PATH I have /opt/intel/oneapi/2024.0/lib/. I have:

as environment variables.

Note:

WSL Ubuntu 22.04.3 LTS. WSL 2

I get no error or warning while building. I have also successfully run different tests where I don't use MKL.

Upvotes: 2

Views: 449

Answers (2)

Savrona
Savrona

Reputation: 333

Problem was on WSL some runtime libs of openMP does not installed when installed essentials. So run:

sudo apt install libomp-dev

Upvotes: 1

Employed Russian
Employed Russian

Reputation: 213879

symbol lookup error: .../libmkl_intel_thread.so.2: undefined symbol: omp_get_num_procs

The error means that libmkl_intel_thread.so.2 was not linked correctly.

You can work around this by adding -lgomp to the end of your link line.

In PATH I have /opt/intel/oneapi/2024.0/lib/

That is the wrong thing to put into your PATH; you should remove it.

LD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu

You should unset LD_LIBRARY_PATH -- the /usr/lib/x86_64-linux-gnu is searched by default and shouldn't be in LD_LIBRARY_PATH.

Upvotes: 0

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