$OpenBSD$
--- Makefile.orig	Wed May 13 20:27:22 2015
+++ Makefile	Wed May 13 20:27:33 2015
@@ -52,7 +52,7 @@ all: $(LIBRARY) $(BINFILES)
 
 $(LIBRARY): $(OBJECTS)
 	@echo LINK $@
-	@$(LIBTOOL) --mode=link --tag=CC $(CC) -rpath $(LIBDIR) -version-info $(VERSION_CURRENT):$(VERSION_REVISION):$(VERSION_AGE) -o $@ $^ $(LDFLAGS)
+	@$(LIBTOOL) --mode=link --tag=CC $(CC) -rpath $(LIBDIR) -version-info $(VERSION_CURRENT):$(VERSION_REVISION) -o $@ $^ $(LDFLAGS)
 
 src/%.lo: src/%.c $(HFILES_INT)
 	@echo CC $<
