extern struct var *lookup_by_obj(lispobj obj);
extern struct var *define_var(char *name, lispobj obj, boolean perm);
extern struct var *define_dynamic_var(char *name,
extern struct var *lookup_by_obj(lispobj obj);
extern struct var *define_var(char *name, lispobj obj, boolean perm);
extern struct var *define_dynamic_var(char *name,