-extern void heap_profile_setup(STG_NO_ARGS); /* called at start of heap profile */
-extern void heap_profile_done(STG_NO_ARGS); /* called at end of heap profile */
+void heap_profile_setup(STG_NO_ARGS); /* called at start of heap profile */
+void heap_profile_done(STG_NO_ARGS); /* called at end of heap profile */