Error using loadlibrary; failed to preprocess the input file. Error C1189.

Alba

2014 2 21

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After successfully building a .dll of my Simulink model (which includes an S-function), I tried to load the library in Matlab:

[notfound,warnings] = loadlibrary([libraryName,ext],...
    fullfile('.',[modelname,'_ert_shrlib_rtw'],[modelname,'.h']),...
    'mfilename',mprototypename,...
    'includepath',fullfile(matlabroot,'simulink','include'));

but I got the following error message:

Error using loadlibrary (line 419)
Failed to preprocess the input file.
 Output from preprocessor is:myModel.h
matlabroot\simulink\include\simstruc.h(285) : fatal error C1189: #error :  Unrecognized use.

Any idea on how to solve this error?