dlog: introduce DAEMON_SET_VERBOSITY_AVAILABLE
diff --git a/libdaemon/dlog.h b/libdaemon/dlog.h
index 0803d36..def000d 100644
--- a/libdaemon/dlog.h
+++ b/libdaemon/dlog.h
@@ -85,8 +85,13 @@
*/
char *daemon_ident_from_argv0(char *argv0);
-/**
- * @brief Setter for the verbosity level of standard output.
+/** This variable is defined to 1 iff daemon_set_verbosity() is available.
+ * @since 0.14
+ * @see daemon_set_verbosity()
+ */
+#define DAEMON_SET_VERBOSITY_AVAILABLE 1
+
+/** Setter for the verbosity level of standard output.
*
* @param verbosity_prio Minimum priority level for messages to output
* on standard output/error
