+/* Need this for the DNS lookup code. Remember to remove if we get round to
+updating Exim to use the newer interface. */
+
+#define BIND_8_COMPAT
+
+/* It's not .so for dynamic libraries on Darwin. */
+#define DYNLIB_FN_EXT "dylib"
+
+/* We currently need some assistance getting OFF_T_FMT correct on MacOS */
+#define OFF_T_FMT "%llu"
+#define LONGLONG_T long int
+