I have built a S-Function with S-Function builder (R2015a 32 bits on windows, compiler Visual Studio C++ Pro 10) This S-Function is linked with a static library (.lib) of legacy code which opens a file during execution. Eventhough I type on the command line clear mex clear *.mewx32 clear *.lib the file opened by this library seems to remain linked to the Matlab Runtime
My problem is indeed that this library does not close properly a file, then 2 consecutive simulation runs under simulink produce a crash because the file remains open. The only workaround I have found is to restart Matlab. Is there a better solution ?