Why slbuild/rtwbuild is always closing my model after code generation in R2023a?

When generating code with the command slbuild or rtwbuild in R2023a, I can see that the model is not open/loaded after finishing the process and when checking it with find_system to see all loaded models:

>> find_system

ans =

 0×1 empty cell array

How can I ensure that I do not need to load the model twice and the model is loaded after finishing the code generation process?

Answer 1

[MathWorks Support Team]

The slbuild/rtwbuild functions currently load the models/systems specified, when they are not yet loaded. When they are not loaded before using slbuild/rtwbuild, the function automatically close them when cleaning up the internal variables.

In order to have the system/model loaded after using these functions, load them before using the functions:

mdl = 'model';

%Check that model is loaded before using slbuild
if ~bdIsLoaded(mdl)
    load_system(mdl);
end

slbuild(mdl)