title: Matlab/Simulink Build error: Unable to honor user-specified priorities
body: <p>I try to generate code with the embedded matlab coder from a Simulink model.
  Then this error occurs: Unable to honor user-specified priorities.
  It seems to me that this algebraic loop triggers this error. As you can see in the picture below, there are a higher execution-order at the sum as at the integrator.  </p>
  
  <p>I changed the continuous block integrator to an discrete, I put a memory block in the back-path, also an unit-delay-block. But nothing lead to success. </p>
  
  <p>I hope you can give me some approaches to find out a workaround.</p>
  
  <p>Regards
  Alex</p>
  
  <p><img src="https://i.stack.imgur.com/RdZ9b.png" alt="algebraic loop"></p>