diff -uNr vortexdiag-1.09/vortex-diag.c vortexdiag-1.09-fixed/vortex-diag.c
--- vortexdiag-1.09/vortex-diag.c	Tue Aug 17 23:24:08 1999
+++ vortexdiag-1.09-fixed/vortex-diag.c	Tue Aug 17 23:51:57 1999
@@ -39,6 +39,7 @@
 #include <getopt.h>
 #include <strings.h>
 #include <errno.h>
+#include <string.h>
 #if defined(__linux__)  &&  __GNU_LIBRARY__ == 1
 #include <asm/io.h>			/* Newer libraries use <sys/io.h> instead. */
 #else
@@ -46,8 +47,8 @@
 #endif
 
 /* No libmii.h (yet) */
-extern show_mii_details(int ioaddr, int phy_id);
-extern monitor_mii(int ioaddr, int phy_id);
+extern void show_mii_details(int ioaddr, int phy_id);
+extern int monitor_mii(int ioaddr, int phy_id);
 /* No libflash.h  */
 extern int flash_show(long addr_ioaddr, long data_ioaddr);
 extern int flash_dump(long addr_ioaddr, long data_ioaddr, char *filename);