-extern void initRetainerProfiling ( void );
-extern void endRetainerProfiling ( void );
-extern void retainerProfile ( void );
-extern void resetStaticObjectForRetainerProfiling( StgClosure *static_objects );
+#pragma GCC visibility push(hidden)
+
+void initRetainerProfiling ( void );
+void endRetainerProfiling ( void );
+void retainerProfile ( void );
+void resetStaticObjectForRetainerProfiling( StgClosure *static_objects );