+#define EXPERIMENTAL_DSN_INFO
+#define EXPERIMENTAL_DMARC
+#define EXPERIMENTAL_EVENT
+#define EXPERIMENTAL_INTERNATIONAL
+#define EXPERIMENTAL_PROXY
+#define EXPERIMENTAL_REDIS
+#define EXPERIMENTAL_SOCKS
+#define EXPERIMENTAL_SPF
+#define EXPERIMENTAL_SRS
+
+/* For developers */
+#define WANT_DEEPER_PRINTF_CHECKS