--- lrzsz-0.12.20/lib/long-options.c
+++ lrzsz-0.12.20/lib/long-options.c
@@ -22,6 +22,7 @@
 #endif
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <getopt.h>
 #include "long-options.h"
 
--- lrzsz-0.12.20/src/lsyslog.c
+++ lrzsz-0.12.20/src/lsyslog.c
@@ -20,8 +20,10 @@
 */
 #include "config.h"
 #ifdef ENABLE_SYSLOG
+#define _GNU_SOURCE
 #include "zglobal.h"
 #include <pwd.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #endif