--- ./src/iomode.c.orig 2021-11-10 10:09:28.314172038 +0100 +++ ./src/iomode.c 2021-11-10 10:08:57.053490735 +0100 @@ -26,6 +26,7 @@ #include "lrzsz.h" #include <sys/types.h> +#include <syslog.h> static struct termios oldtty; --- ./src/lrz.c.orig 2021-11-10 10:07:52.992094536 +0100 +++ ./src/lrz.c 2021-11-10 10:08:43.819868988 +0100 @@ -32,6 +32,7 @@ #include <errno.h> #include <getopt.h> #include <time.h> +#include <syslog.h> #include "timing.h" #include "long-options.h" --- ./src/log.c.orig 2021-11-10 10:08:42.623176240 +0100 +++ ./src/log.c 2021-11-10 10:08:49.183319213 +0100 @@ -28,6 +28,7 @@ #include <string.h> #include <stdio.h> #include <ctype.h> +#include <syslog.h> static const char *username; static int lrzsz_locallog_severity=LOG_INFO; --- ./src/zm.c.orig 2021-11-10 10:15:55.309272598 +0100 +++ ./src/zm.c 2021-11-10 10:16:04.896148184 +0100 @@ -40,6 +40,7 @@ #include "lrzsz.h" #include <stdio.h> +#include <syslog.h> unsigned int Rxtimeout = 100; /* Tenths of seconds to wait for something */ --- ./src/lsz.c.orig 2021-11-10 10:26:52.693598169 +0100 +++ ./src/lsz.c 2021-11-10 10:27:05.573878846 +0100 @@ -33,6 +33,7 @@ #include <ctype.h> #include <errno.h> #include <getopt.h> +#include <syslog.h> struct lrzsz_config config; --- ./src/zreadline.c.orig 2021-11-10 10:29:30.677040827 +0100 +++ ./src/zreadline.c 2021-11-10 10:29:41.483942987 +0100 @@ -30,6 +30,7 @@ #include <signal.h> #include <ctype.h> #include <errno.h> +#include <syslog.h> #include "error.h"