Preprocessor information is absolutely necessary. High-level, vague descriptions are not. Instead, I'd have some indicators of maturity, complexity and such -

Preprocessor information is absolutely necessary. High-level, vague descriptions are not. Instead, I'd have some indicators of maturity, complexity and such - year introduced, version number, lines of code, documentation quality (okay, the last one is subjective.) Actively developed/maintained or not? Author name?