CSharpCodeProvider throws a TypeException in Builds

Hi, I'm using CSharpCodeProvider and CodeDom to provide runtime compilation support to a console. In the windows editor, 2018.2 +. NET 4 this works perfectly fine. In a Mono build however, it fails to work. It looks for the mono .exe in a strange non existent path. (if my build was at a/b/c/build, it looks for it in a/b/mono.../ etc) and throws an exception.

I have a few questions:
A) Is CSharpCodeProvider only supported on Windows or on other platforms too?
B) Why is it failing in the build?
C) How can this be fixed or circumvented?

Thanks

 

Google-fu

https://answers.unity.com/questions/364580/scripting-works-in-editor-try-it-but-not-build.html

 

For anyone else wondering, this worked
https://github.com/aeroson/mcs-ICodeCompiler