The warning generated by the code in this method -establishConnection is unavoidable. Disable the warning.

Source/GSXibLoading.m

@@ -466,6 +466,9 @@
   return trigger;
 }
 
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wcast-of-sel-type"
+
 - (void) establishConnection
 {
   SEL sel = NSSelectorFromString(label);
@@ -505,6 +508,8 @@
     }
 }
 
+#pragma clang diagnostic pop
+
 @end
 
 @implementation IBOutletConnection