--- Makefile.in	(revision 147827)
+++ Makefile.in	(working copy)
@@ -4041,7 +4041,7 @@ 
 	  dest=$(plugin_includedir)/$$base; \
 	  echo $(INSTALL_DATA) $$path $(DESTDIR)/$$dest; \
 	  dir=`dirname $$dest`; \
-	  $(mkinstalldirs) $$dir; \
+	  $(mkinstalldirs) $(DESTDIR)/$$dir; \
 	  $(INSTALL_DATA) $$path $(DESTDIR)/$$dest; \
 	done