Main: run the OS X native event loop

src/Main.hxx

@@ -75,4 +75,15 @@ win32_app_stopping(void);
 
 #endif
 
+#ifdef __APPLE__
+
+/* Runs the OS X native event loop in the main thread, and runs
+ * mpd_main on a new thread. This lets CoreAudio receive route
+ * change notifications (e.g. plugging or unplugging headphones).
+ * All hardware output on OS X ultimately uses CoreAudio internally.
+ */
+int osx_main(int argc, char *argv[]);
+
+#endif
+
 #endif