+static void
+exp_features(void)
+{
+#ifdef EXPERIMENTAL_ARC
+ builtin_macro_create(US"_EXP_ARC");
+#endif
+#ifdef EXPERIMENTAL_BRIGHTMAIL
+ builtin_macro_create(US"_EXP_BMI");
+#endif
+#ifdef EXPERIMENTAL_DCC
+ builtin_macro_create(US"_EXP_DCC");
+#endif
+#ifdef EXPERIMENTAL_DSN_INFO
+ builtin_macro_create(US"_EXP_DSNI");
+#endif
+#ifdef EXPERIMENTAL_ESMTP_LIMITS
+ builtin_macro_create(US"_EXP_LIMITS");
+#endif
+#ifdef EXPERIMENTAL_QUEUEFILE
+ builtin_macro_create(US"_EXP_QUEUEFILE");
+#endif
+}
+