File figlet-implicit.patch of Package figlet
--- chkfont.c +++ chkfont.c @@ -1,6 +1,9 @@ #include <stdio.h> #include <string.h> #include <ctype.h> +#ifdef __STDC__ +#include <stdlib.h> +#endif #define DATE "20 Feb 1996" #define VERSION "2.2" --- figlet.c +++ figlet.c @@ -54,6 +54,7 @@ #endif #include <stdio.h> +#include <unistd.h> #ifdef __STDC__ #include <stdlib.h> #endif