Building problems about onemkl HOT 9 CLOSED

@ducbueno
Can you try the command with an additional CMake definitions -DBUILD_SHARED_LIBS=ON -DCBLAS=ON ? By default LAPACK build system sets these to OFF (line 48 & line 242 of https://github.com/Reference-LAPACK/lapack/blob/master/CMakeLists.txt), which is why you only get *.a static libraries and missing cblas.

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@ducbueno Can you please post your build command? Did you define REF_BLAS_ROOT in your CMake command?

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@vmalia I did define REF_BLAS_ROOT in my cmake command. I tried two ways:

1. Installing lapack as instructed in its Git (that is, installing it at $HOME/.local) and running the following cmake command:

cmake .. -DREF_BLAS_ROOT=/home/ducbueno/.local/lapack

2. Installing lapack with root privileges and running the following cmake command:

cmake .. -DREF_BLAS_ROOT=/usr/local/lib (I'm not sure if this is correct though. I tried it since the lapack libraries were installed in this directory.)

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Hello,
Cmake is looking for libcblas.so, libblas.so files. Do you have them in REF_BLAS_ROOT (REF_BLAS_ROOT/lib, REF_BLAS_ROOT/lib64) directory?

And btw, are you using latest revision of master?

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cmake .. -DREF_BLAS_ROOT=/usr/local/lib (I'm not sure if this is correct though. I tried it since the lapack libraries were installed in this directory.)

@ducbueno
Can you try cmake .. -DREF_BLAS_ROOT=/usr/local ? Since correct path to REF_BLAS_ROOT is the path that contains lib folder, which in-turn contains libblas.so and libcblas.so as mentioned by @NadyaTen

Same applies to other dependency variables. You can check the Find{module}.cmake file in cmake/ directory of the project too, if you get undefined variable errors.

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Something is not adding up here. By following the installation instructions on the lapack Git (https://github.com/Reference-LAPACK/lapack) I get only the libblas.a and liblapack.a files.

When I run sudo find / -name 'libcblas.so' and sudo find / -name 'libblas.so' I get nothing.

Is there any other way of installing these libraries? I'm running Ubuntu by the way.

And @NadyaTen I think I'm using the latest revision, I've cloned the repository in the standard way (git clone https://github.com/oneapi-src/oneMKL.git).

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I was able to install libblas.so with sudo apt-get install libblas-dev, but still no results for sudo find / -name 'libcblas.so'.

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@vmalia thanks a lot! That solved the issue.

I'm still very new to CMake, so that was not obvious at all to me.

from onemkl.

@vmalia thanks a lot! That solved the issue.

I'm still very new to CMake, so that was not obvious at all to me.

Happy to help and glad to have you here :)
Closing the issue now.

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