-#define STG_SIG_DFL (-1)
-#define STG_SIG_IGN (-2)
-#define STG_SIG_ERR (-3)
-#define STG_SIG_HAN (-4)
-#define STG_SIG_RST (-5)
-
-extern int stg_sig_install (int, int, StgStablePtr *, void *);
-
-#endif // SIGNALS_H
+#define STG_SIG_DFL (-1)
+#define STG_SIG_IGN (-2)
+#define STG_SIG_ERR (-3)
+#define STG_SIG_HAN (-4)
+#define STG_SIG_RST (-5)