#include <sys/types.h>
#include <string.h>
#include <stdio.h>
+#include <errno.h>
#include <signal.h>
#ifdef __hp9000s300
# include </usr/include/debug.h>
/* for reporting error messages from system calls */
extern int sys_nerr;
-extern int errno;
extern int _DYNAMIC;
extern char **environ;