OpenBLAS callback does not work well

Hello everyone,

I am trying BLAS calls in my C code generated from the Simulink model. For this I use Intel MKL BLAS and OpenBLAS. MKL BLAS works well. But OpenBLAS is not called correctly. In order to get BLAS-Calls I'm using the templates which are in the following link:

https://de.mathworks.com/help/releases/R2020b/coder/ref/coder.blascallback-class.html#mw_3b15d369-a551-45c8-99f6-2617014b8ac7

My Intel MKL BLAS-Callback:

classdef IntelMKLBLAS < coder.BLASCallback
methods (Static)
    function updateBuildInfo(buildInfo, ~)
     libPath = fullfile('C:\','Program Files (x86)','Intel', ...
                 'oneAPI','mkl','2021.4.0','lib','intel64');
     libPriority = '';
     libPreCompiled = true;
     libLinkOnly = true;
     libs = {'mkl_intel_ilp64.lib' ...
             'mkl_sequential.lib' ...
             'mkl_core.lib'};
            
     buildInfo.addLinkObjects(libs, libPath, libPriority, libPreCompiled, ...
                                  libLinkOnly);
                         
     buildInfo.addIncludePaths(fullfile('C:\','Program Files (x86)', ...
      'Intel','oneAPI','mkl','2021.4.0','include'));
 
     buildInfo.addDefines('-DMKL_ILP64');
 
    end
    function headerName = getHeaderFilename()
     headerName = 'mkl_cblas.h';
    end
    function intTypeName = getBLASIntTypeName()
     intTypeName = 'MKL_INT';            
    end
end
end

and OpenBLAS-Callback:

classdef OpenBLAS < coder.BLASCallback
    methods (Static)
        function updateBuildInfo(buildInfo, ~)
            buildInfo.addIncludePaths(fullfile('C:\','OpenBLAS-0.3.19','include'));
            buildInfo.addLinkFlags('-lpthread');
            libPriority = '';
            libPreCompiled = true;
            libLinkOnly = true;
            libName = 'libopenblas.lib';
            libPath = fullfile('C:\','OpenBLAS-0.3.19','lib');
            buildInfo.addLinkObjects(libName, libPath, ...
                libPriority, libPreCompiled, libLinkOnly);
            
        end
        
        function headerName = getHeaderFilename()
            headerName = 'cblas.h';
        end

        function intTypeName = getBLASIntTypeName()
            intTypeName = 'blasint';
        end
    end
end

I can not get any solution from OpenBLAS-Calls. I think there is a problem with the .lib file I am using in OpenBLAS. But unlike Intel MKL, OpenBLAS does not have any extra .lib files. I use the the latest version of OpenBLAS in following link:

https://github.com/xianyi/OpenBLAS/releases

Should I use same .lib files like in Intel MKL?

Or I would be pleased for any advice how to complete the OpenBLAS calls.

Thanks

[Raghu Boggavarapu]

Could you check LAPACK/BLAS callbacks we have published here: GitHub - mathworks/MATLAB-Coder-integration-for-BLAS-LAPACK: A collection of MATLAB callback classes for interfacing with external BLAS and LAPACK libraries, such as OpenBLAS and MKL, to enhance performance in standalone code generation.