$NetBSD$

--- include/Makefile.in.orig	2010-04-26 02:28:43.000000000 +0000
+++ include/Makefile.in
@@ -301,7 +301,7 @@ clean-libtool:
 	-rm -rf .libs _libs
 install-includeHEADERS: $(include_HEADERS)
 	@$(NORMAL_INSTALL)
-	test -z "$(includedir)" || $(MKDIR_P) "$(DESTDIR)$(includedir)"
+	test -z "$(DESTDIR)$(includedir)" || $(MKDIR_P) "$(DESTDIR)$(includedir)"
 	@list='$(include_HEADERS)'; test -n "$(includedir)" || list=; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
