You can not. The point is you cannot run the code of a compiler, you have to run the compiled binary. And there's no way to verify if the binary does the same thing as the code when the Ken Thompson Hack is implemented.
How would there be one? It's not like you can easily write a program that infiltrates a random program A that happens to interpret a language in which a random program B is written and infiltrates the B program afterwards. You'd probably need a general-artificial-intelligence-level in your malware.
