How to disable openMP with Matlab Coder?

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Matthias Frühwirth
编辑： Joe Barrus 2024-1-8
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

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回答（1 个）

Ryan Livingston
Ryan Livingston 2017-3-1
Try:
cfg = coder.config('dll');
cfg.EnableOpenMP = false;
codegen -config cfg ...
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Jingyang Yan
Jingyang Yan 2022-2-18
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
Joe Barrus 2024-1-8
编辑：Joe Barrus 2024-1-8
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.

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