"dsp_rt.h" missing after code generation (2020b)

Setup:

• Simulink 2020b
• Simulink model configured for embedded coder
• Subsystem uses Chirp
• Generate code
• dsp_rt.h is missing (is used by #include in codegen.c)

Everything works fine without using the Chirp block (other blocks do not use DSP Toolbox), but for some reason the dsp_rt.h file is not in the target folder of the code generation

[Tobias Schindler]

Seems like this is a known issue:

https://www.mathworks.com/matlabcentral/answers/96782-why-does-my-build-fail-due-to-a-missing-dsp_rt-h-file-with-the-signal-processing-blockset-6-1-r14sp?s_tid=answers_rc1-2_p2_MLT

@MathWorks Support Team