-extern void *stgAllocForGMP PROTO((size_t));
-extern void *stgReallocForGMP PROTO ((void *, size_t, size_t));
-extern void stgDeallocForGMP PROTO ((void *, size_t));
+void *stgAllocForGMP PROTO((size_t));
+void *stgReallocForGMP PROTO ((void *, size_t, size_t));
+void stgDeallocForGMP PROTO ((void *, size_t));