Index: Makefile
==================================================================
--- Makefile
+++ Makefile
@@ -2,10 +2,12 @@
 CFLAGS = -Wall -Werror -W -pthread -O3
 LDFLAGS = -pthread
 LIBS = -lpthread
 
 filed: filed.o
+	$(CC) $(CFLAGS) $(LDFLAGS) -o "$@" $^ $(LIBS)
+
 filed.o: filed.c
 
 clean:
 	rm -f filed filed.o
 

Index: filed.c
==================================================================
--- filed.c
+++ filed.c
@@ -3,10 +3,11 @@
 #include <sys/types.h>
 #include <arpa/inet.h>
 #include <sys/mman.h>
 #include <sys/stat.h>
 #include <pthread.h>
+#include <strings.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <string.h>
 #include <fcntl.h>
 #include <stdio.h>