-extern struct exec_archhandler exec_archhandler_ppc;
-extern int set_archhandler(struct proc *p, int arch);
-extern int grade_binary(cpu_type_t exectype, cpu_subtype_t execsubtype);
+int grade_binary(cpu_type_t, cpu_subtype_t);
+boolean_t pie_required(cpu_type_t, cpu_subtype_t);