Here is a list of all documented macros with links to the documentation:

CAPINFO_TRANS_NULL : protocol.h
COMMUNITY_NO_EXPORT : protocol.h
DEBUG : logging.h
ERROR : logging.h
INFO : logging.h
IS_ATTR_FLAG_WELL_KNOWN : protocol.h
PROTO_TCP_PORT : protocol.h
PROTO_TRY : protocol.h
PROTOCOL_VERSION : protocol.h
TRACE : logging.h
WARNING : logging.h