-extern StgTRecHeader *stmStartTransaction(Capability *cap, StgTRecHeader *outer);
-extern StgTRecHeader *stmStartNestedTransaction(Capability *cap, StgTRecHeader *outer
+StgTRecHeader *stmStartTransaction(Capability *cap, StgTRecHeader *outer);
+StgTRecHeader *stmStartNestedTransaction(Capability *cap, StgTRecHeader *outer