How can I run a mex function using Matlab R2018b, which worked fine with R2015a?

Hi, I am using Matlab R2018b since a few months.

For certain problems I use https://de.mathworks.com/matlabcentral/fileexchange/30819-fast-inpolygon-in-mex because the standard matlab routine inpolygon is very slow.

I added a simple openmp parallelisation in the c-code to speed up the routine with

#pragma omp parallel for private(nIntersect, ax, ay, bx, by, tmp, intersecty, ind, iC) num_threads(nT)

The compiled mex function works perfectly if I use MATLAB R2015a. But if I use R2018b, I get the following error:

Invalid MEX-file 'PATH/mex_function.mexa64': dlopen: cannot load any more object with static TLS.

The mex function which does not include openmp works fine with R2018b and R2015a.

It is very annoying to run an old MATLAB just for using this function.

Thanks in advance for your help!

[Walter Roberson]

https://stackoverflow.com/questions/19268293/matlab-error-cannot-open-with-static-tls has further information about the situation