http://sourceforge.net/tracker/index.php?func=detail&aid=1791328&group_id=172030&atid=860196

pull in more headers for prototypes

--- watchdog-5.6/src/fstab.c
+++ watchdog-5.6/src/fstab.c
@@ -4,6 +4,7 @@
 #include "config.h"
 #endif
 
+#define _GNU_SOURCE /* for strsignal() */
 #include <unistd.h>
 #include <errno.h>
 #include <stdio.h>
--- watchdog-5.6/src/wd_keepalive.c
+++ watchdog-5.6/src/wd_keepalive.c
@@ -24,7 +25,7 @@
 #include <stdlib.h>
 #include <sys/mman.h>
 #include <sys/wait.h>
-#define __USE_GNU
+#include <libgen.h>
 #include <string.h>
 #include <syslog.h>
 
--- watchdog-5.6/src/watchdog.c
+++ watchdog-5.6/src/watchdog.c
@@ -26,12 +26,10 @@
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <linux/watchdog.h>
-#define __USE_GNU
 #include <string.h>
 
-#if !defined(__GLIBC__)		/* __GLIBC__ */
-extern char *basename(const char *);
-#endif				/* __GLIBC__ */
+#include <sys/ioctl.h>
+#include <libgen.h>
 
 #include <unistd.h>