-#if defined DARWIN
+#if defined LISP_FEATURE_DARWIN
#if defined LANGUAGE_ASSEMBLY
#define REG(num) r##num
#else
#define reg_NL6 REG(9) /* Last (7th) FF param */
#define reg_FDEFN REG(10) /* was NL7 until recently -dan */
#define reg_NARGS REG(11)
-#ifdef DARWIN
+#ifdef LISP_FEATURE_DARWIN
#define reg_CFUNC REG(12) /* Silly to blow a reg on FF-name */
#define reg_NFP REG(13) /* Lisp may save around FF-call */
#else