+#if HOST_ANDROID
+void mono_log_open_logcat (const char *path, void *userData);
+void mono_log_write_logcat (const char *log_domain, GLogLevelFlags level, mono_bool hdr, const char *message);
+void mono_log_close_logcat (void);
+#endif
+
+#if defined(HOST_IOS)
+void mono_log_open_asl (const char *path, void *userData);
+void mono_log_write_asl (const char *log_domain, GLogLevelFlags level, mono_bool hdr, const char *message);
+void mono_log_close_asl (void);
+
+#endif
+