Create Block Library from C/C++ Code

Use the Simulink Code Importer tool to build a Simulink library from your custom C/C++ code library. The Simulink Code Importer brings custom code into a Simulink library of C Caller blocks as callable functions, after analyzing the custom code for functions and their dependencies, including global variables and types used by the functions.

The Simulink Code Importer imports custom C++ class into a library of C Function blocks after analyzing the custom code for classes and their dependencies. (since R2024a)

To use the Simulink Code Importer, go to the Modeling tab on the Simulink toolstrip. From Design, choose Code Importer. A series of screens then leads you through the process of creating a Simulink library from your custom code.

Alternatively, you can create an object of the Simulink.CodeImporter class and run the Simulink Code Importer tool using a command-line interface.

If you have a Simulink Test™ license, you can use the Simulink Code Importer to perform unit testing or integration testing on your custom C/C++ code. See Importing and Testing Custom C/C++ Code (Simulink Test).