Looks like I forgot to commit this.

libc/inet/Makefile

@@ -44,7 +44,7 @@ MOBJ3= accept.o bind.o connect.o getpeername.o getsockname.o getsockopt.o \
 	setsockopt.o shutdown.o socket.o socketpair.o 
 
 CSRC =getservice.c getproto.c hostid.c getnetent.c getnetbynm.c getnetbyad.c \
-	herror.c inet_net.c
+	herror.c inet_net.c ntop.c
 
 COBJS=$(patsubst %.c,%.o, $(CSRC))