Ivan Vilata i Balaguer schreef op vr 21-01-2022 om 22:06 [+0100]:
> tftp.c:88:5: warning: implicit declaration of function ‘bsd_signal’;
> did you mean ‘ssignal’? [-Wimplicit-function-declaration]
>    88 |     bsd_signal(SIGALRM, timer);
>       |     ^~~~~~~~~~

This one looks like tftp.c forgot to include <signal.h> directly
and relied on another header to include <signal.h>.

It's a warning, not an error, but declarations of functions can
sometimes be important for ABI purposes.

Greetings,
Maxime