Create a relative symlink for .so if libdir and usrlibdir are the same
diff --git a/Makefile b/Makefile
index 53ab4f3..fbe23c1 100644
--- a/Makefile
+++ b/Makefile
@@ -157,7 +157,13 @@ install: libs man
done
install -m644 $(LIB_MANS) $(DESTDIR)/$(mandir)/man3
install -m644 $(LIB_PKGCONFIG) $(DESTDIR)/$(pkgconfigdir)
+ifeq ($(libdir),$(usrlibdir))
+ # If both dirs are the same, do a relative symlink.
+ ln -sf $(LIB_SHARED) $(DESTDIR)/$(usrlibdir)/$(LIB_SHARED_SO)
+else
+ # Otherwise, do an absolute one.
ln -sf $(libdir)/$(LIB_SHARED) $(DESTDIR)/$(usrlibdir)/$(LIB_SHARED_SO)
+endif
ln -sf $(LIB_SHARED) $(DESTDIR)/$(libdir)/$(LIB_SONAME)
.PHONY: clean