Updating errors when a compiler output file changes

I'm working on a game engine with live-reload capability, which means that my game is invoking the compiler for me when I change source files. I have it so that the compiler output goes to a specific file in my project. What I'd love to do is to be able to use ALE's features without having to invoke the compiler again, which would be wasteful/slow.

I need ALE to watch this compiler output file, and when there are changes, to redo its errors based on the contents of that file. That's it! Is that possible with configuration? Or by making a simple custom linter? Thanks!