#include <stdio.h>
#include <fcntl.h>
#include <signal.h>
+#include <stdlib.h>
#include <sys/ioctl.h>
#define BB_DECLARE_EXTERN
#define bb_need_help
# define getTermSettings(fd,argp) tcgetattr(fd, argp);
# endif
-FILE *cin;
+static FILE *cin;
static struct termios initial_settings, new_settings;