MATLAB: Am I unable to use an S-function Builder block in Simulink 5.0 (R13) that was compiled on a different machine using MSVC

buildercdifferentinstalledinvalidmex filemicrosoftmsvcnotpcs-functionsimulinkvisual

Why am I unable to use an S-function Builder block in Simulink 5.0 (R13) that was compiled on a different machine using MSVC?

I have an S-function Builder block that I compiled on one PC using Microsoft Visual C 6.0. It works on that machine. But if I copy my model and all other files, including the .dll file, to an identical PC that does not have Microsoft Visual C installed, I cannot run my model. If I try, I receive the following error:

 Unable to load mex file: E:\1290049\timestwo.dll.
 The specified module could not be found.
 ??? Invalid MEX-file

Best Answer

This bug has been fixed for Release 14 (R14). For previous releases, please read below for any possible workarounds:

This is a bug in the S-Function Builder in Simulink 5.0 (R13) that is under investigation by our development staff. As a workaround, use the LCC compiler instead of Microsoft Visual C.

Related Solutions

MATLAB: How to debug a MATLAB 6.5 (R13) MEX file in MSVC

In MATLAB 6.5 (R13), you can use the MATLAB Add-In for Visual Studio to set up a project for debugging your MEX file.

If you do not have the add-in setup, see the solutions attached at the bottom of this page.

Now, to debug your MEX file:

1. Start Visual C++.

2. From the menu bar, select File / New.

3. Select a Visual MATLAB project type.

4. Select C MEX as Application Type. Press Finish.

From there you can add your files to the project.

Then finally to compile and debug:

   a. To compile, first save your code
   b. Select Build->Build MEX_Project.dll

Your .dll should now be ready to run in MATLAB.

To debug your .dll

   a. Save your code
   b. Place breakpoints in your code
   c. Select Build->Debug->Go 
       You will be prompted to enter the executable to be used for debugging, since you are debugging
       a .dll. You should enter $MATLAB\bin\matlab.exe, where $MATLAB is the directory in which
       MATLAB is installed. Click OK, and a debugging session will start.
   d. Once inside the MATLAB session, type the name of your MEX file (with possibly the required arguments).               This should bring you into the MSVC debugger.  Please refer to the MSVC manual for more information about debugging.

MATLAB: Am I not able to make a C++ shared DLL using the MATLAB Project Wizard in MSVC

This bug has been fixed for Release 14 (R14). For previous releases, read below for any possible workarounds:

This is a bug in the Project Wizard. Creating a C++ shared library (DLL) in MSVC is not supported and the option should not be enabled.

Instructions on the supported method for creating a shared library for linking in an MSVC++ project can be found in the Related Solution listed below.

Best Answer

Related Solutions

MATLAB: How to debug a MATLAB 6.5 (R13) MEX file in MSVC

MATLAB: Am I not able to make a C++ shared DLL using the MATLAB Project Wizard in MSVC

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