When non-NIL, code that is compiled (either using
compile-file, or by calling compile from the
listener), will be analyzed for cross-references. Defaults to
nil.
Cross-referencing information is only generated by the compiler; the interpreter does not populate the cross-reference database. XREF analysis is independent of whether the compiler is generating native code or byte code, and of whether it is compiling from a file, from a stream, or is invoked interactively from the listener.
Alternatively, the ::xref option to compile-file may be
specified to populate the cross-reference database when compiling a
file. In this case, loading the generated fasl file in a fresh lisp
will also populate the cross-reference database.
Reinitializes the database of cross-references. This can be used to reclaim the space occupied by the database contents, or to discard stale cross-reference information.