DLL from Simulink model with MEX - proto function

Recently I was trying to generate a DLL for Matlab GUI from Simulink model. In this Simulink model I have a S-Function that is using mexw64 file. This S-Function is a closed code. I have only an obj file and libraries to build a mex file. The mex in Simulink simulation is working well.

I was able to generate a DLL by adding the obj file to Code Generation > Custom Code > Source files and all lib files to Code Generation > Custom Code > Include directories. The system target in Simulink is: ert_shrlib.tlc.

I result I have a DLL, so I was trying to generate a proto function:

coder.loadlibrary('simtest_170802_win64.dll', 'simtest_170802_ert_shrlib_rtw/simtest_170802.h','mfilename','mHeader')

Unfortunately I got the error:

Error using loadlibrary
Failed to preprocess the input file.
 Output from preprocessor is:simtest_170802.h
c:\workspace\20170802\simtest_170802_ert_shrlib_rtw\simstruc.h(292) : fatal error C1189: #error :
Unrecognized use.

Error in coder.loadlibrary (line 39)
[varargout{1:nargout}] = loadlibrary(library, wrapperHeader, varargin{:});

If I try to use the header file instead to use the proto function I get the same error. Do you have some ideas?

[Ivo Prah]

I have the same problem, any ideas?

[Michaël ROBARD]

Hello everyone,

I have the same kind of problem. I searched several days and I didn't find the solution.

I compiled a simulink model with MinGW 64bits and ert_shrlib.tlc as the target. The compilation worked well : no errors, generate the folder model_ert_shrlib, generate model.dll. After that when I tried to generate the mHeader file with :

coder.loadlibrary('model_win64.dll', 'model.h','mfilename','mHeader')

I receive these errors :

Error using loadlibrary
Failed to preprocess the input file.
 Output from preprocessor is:In file included from
 D:/Users/model.h:26:0,
                  from
 D:\Users\model.h:7:
 D:/Users/simstruc.h:299:3:
 error: #error Unrecognized use.
 # error Unrecognized use.
   ^
D:/Users/simstruc.h:371:3:
error: #error Must define one of RT, NRT, MATLAB_MEX_FILE,
SL_INTERNAL, or FIPXT_SHARED_MODULE
 # error Must define one of RT, NRT, MATLAB_MEX_FILE, SL_INTERNAL,
 or FIPXT_SHARED_MODULE
   ^
D:/Users/simstruc.h:494:3:
error: #error Unhandled case
 # error Unhandled case
   ^


Error in coder.loadlibrary (line 39)
[varargout{1:nargout}] = loadlibrary(library, wrapperHeader,
varargin{:});

Does someone has answer element ? Or a method in order to debug theses errors ?

Thank you very much !

[Panagiotis Bountouris]

Hi Michaël ROBARD,

Did you resolve somehow your problem? I have the same one...

Many thanks

Answer 1

[Nick Sarnie]

Hi all,

This workflow is only supported if you have an inlined S-Function. That means there is a .tlc file for the S-Function.

If you have an inlined S-Function but this error still occurs, please contact Technical Support.

Thanks,

Nick