Inno setup compiler

I used CMake to create the binary code before compiling with Visual Studio. After “Generate” is completed, I found a message: Inno setup compiler not found. I know I did installed the inno setup software. How do I tell Cmake that the inno setup compiler has been installed. I saw in the cloned Audacity code in the Win folder about Inno setup. Without the .iss file, I cannot make a distributable of Audacity.

Best to ask this question on the Discord channel here: Audacity dev