$NetBSD$

Improve dynamic lib naming

--- exports/Makefile.orig	2020-06-14 20:03:04.000000000 +0000
+++ exports/Makefile
@@ -192,6 +192,7 @@ else
 endif
 	$(CC) $(CFLAGS) $(LDFLAGS)  -shared -o ../$(LIBSONAME) \
 	-Wl,--whole-archive $< -Wl,--no-whole-archive \
+	-Wl,-soname,$(LIBPREFIX).so.$(MAJOR_VERSION) \
 	$(FEXTRALIB) $(EXTRALIB)
 	$(CC) $(CFLAGS) $(LDFLAGS) -w -o linktest linktest.c ../$(LIBSONAME) $(FEXTRALIB) && echo OK.
 	rm -f linktest
