--- makefile.gctpc.orig	2012-04-21 02:52:55.000000000 +0900
+++ makefile.gctpc	2020-01-10 16:18:18.000000000 +0900
@@ -23,6 +23,7 @@
 
 $(LIB): $(objs)
 	ar $(ARFLAGS) ${LIB} $(objs)
+	ranlib $(LIB)
 
 clean:
 	touch junk.o