=> Bootstrap dependency digest>=20211023: found digest-20220214
===> Building for empty-0.6.20b
--- all ---
cc -pipe -Os -Wall -lutil -o empty empty.c
empty.c:364:11: warning: implicit declaration of function 'time' is invalid in C99 [-Wimplicit-function-declaration]
                stime = time(0);
                        ^
empty.c:501:6: warning: implicit declaration of function 'openpty' is invalid in C99 [-Wimplicit-function-declaration]
        if (openpty(&master, &slave, NULL, &tt, &win) == -1)
            ^
empty.c:543:3: warning: implicit declaration of function 'login_tty' is invalid in C99 [-Wimplicit-function-declaration]
                login_tty(slave);
                ^
empty.c:881:10: warning: implicit declaration of function 'time' is invalid in C99 [-Wimplicit-function-declaration]
        stime = time(0);
                ^
4 warnings generated.