--- linux-2.4.1-pre9/include/linux/acpi.h	Fri Dec 29 14:07:24 2000
+++ linux/include/linux/acpi.h	Sun Jan 21 00:14:59 2001
@@ -26,9 +26,9 @@
 #ifdef __KERNEL__
 #include <linux/sched.h>
 #include <linux/wait.h>
-#endif /* __KERNEL__ */
 
-u64 acpi_get_rsdp_ptr(void);
+extern u64 acpi_get_rsdp_ptr(void);
+#endif /* __KERNEL__ */
 
 /*
  * System sleep states