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The examples GP gave were java-specific, but the concept of codegen meaning "deterministic generation of code in a 'compile' phase" is universal—think of OpenAPI libraries, Go pre-generics, Babel, etc.

Yeah, sorry about that. If I was more familiar with native codegen tools I would have brought examples from them as well. Hopefully I still got my point across.

No worries - all I mean is that you, from Java domain, interpret the word one way. Different domains interpret it very differently.

Not just JVM. Rust also has a codegen step in its compiler pipeline https://doc.rust-lang.org/rustc/codegen-options/index.html