gcc -Wall demo.c -o demo -lncurses
In file included from demo.c:4:0:
kbhit.c: In function ‘_kbhit’:
kbhit.c:16:9: error: unknown type name ‘termios’
         termios term;
         ^
kbhit.c:17:26: warning: passing argument 2 of ‘tcgetattr’ from incompatible pointer type [-Wincompatible-pointer-types]
         tcgetattr(STDIN, &term);
                          ^
In file included from kbhit.c:7:0,
                 from demo.c:4:
/usr/include/termios.h:66:12: note: expected ‘struct termios *’ but argument is of type ‘int *’
 extern int tcgetattr (int __fd, struct termios *__termios_p) __THROW;
            ^
In file included from demo.c:4:0:
kbhit.c:18:13: error: request for member ‘c_lflag’ in something not a structure or union
         term.c_lflag &= ~ICANON;
             ^
kbhit.c:19:35: warning: passing argument 3 of ‘tcsetattr’ from incompatible pointer type [-Wincompatible-pointer-types]
         tcsetattr(STDIN, TCSANOW, &term);
                                   ^
In file included from kbhit.c:7:0,
                 from demo.c:4:
/usr/include/termios.h:70:12: note: expected ‘const struct termios *’ but argument is of type ‘int *’
 extern int tcsetattr (int __fd, int __optional_actions,
            ^
In file included from demo.c:4:0:
kbhit.c:25:18: error: ‘FIONREAD’ undeclared (first use in this function)
     ioctl(STDIN, FIONREAD, &bytesWaiting);
                  ^
kbhit.c:25:18: note: each undeclared identifier is reported only once for each function it appears in
Makefile:6: fallo en las instrucciones para el objetivo 'all'
make: *** [all] Error 1