How to disable openMP with Matlab Coder?

I want to use Matlab Coder to compile a function that will not profit much from multithreading. Although I use

codegen -O disable:openmp

the resulting C source includes omp.h and tries to find vcompXXX.dll when run.

How can I switch off OpenMP use completely?

System: Matlab Coder 2016a/Windows 10/Visual C++ 2013

[Thomas Langerwerf]

I would also like to know this!

Answer 1

[Ryan Livingston]

Try:

    cfg = coder.config('dll');
    cfg.EnableOpenMP = false;
    codegen -config cfg ...

[Anton Semechko]

Or if you are using the Matlab Coder GUI, once you reach the Generate Code stage click on "More Settings"

Then go to All Settings --> Advanced --> Enable OpenMP library if possible --> No

[Jingyang Yan]

In MATLABT R2021b version, even I disable the OpenMP libarart if possible, the omp.h file is still included in the header files.

[Joe Barrus]

In MATLAB 2023b, with All Settings --> Advanced --> Enable OpenMP library if possible --> No, Coder still generates #include "omp.h" and generates omp_nest_lock_t variable.

If I generate a new Coder project file from scratch and select No to "Enable OpenMP library if possible" it seems to work, but changing that setting after initial creation does not seem to work.