Submissions should not include compilers for specific languages, which must be submitted elsewhere to proper subcategories for the source languages involved. Systems for generating separate compiler components (lexers/parsers, code generators or transformation tools) or cross-compilers must be submitted to their respective subcategories under /Compilers.
Compiler-compilers are metaprograms for compiling compilers in their totality, complete with precompilers, lexical analyzers, parsers, and code generators. As such, compiler-compilers are considered kits, along with other tools and environments for generating full compilers.