$NetBSD$

--- doc/reference/Makefile.in.orig	2008-07-18 13:16:50.000000000 +0000
+++ doc/reference/Makefile.in
@@ -542,13 +542,14 @@ install-data-local:
 	if test "$$installfiles" = '$(srcdir)/html/*'; \
 	then echo '-- Nothing to install' ; \
 	else \
-	  $(mkinstalldirs) $(DESTDIR)$(TARGET_DIR); \
+	  installdir=${DESTDIR}${TARGET_DIR}-$(DOC_MODULE_VERSION); \
+	  $(mkinstalldirs) $${installdir}; \
 	  for i in $$installfiles; do \
 	    echo '-- Installing '$$i ; \
-	    $(INSTALL_DATA) $$i $(DESTDIR)$(TARGET_DIR); \
+	    $(INSTALL_DATA) $$i $${installdir}; \
 	  done; \
 	  echo '-- Installing $(srcdir)/html/index.sgml' ; \
-	  $(INSTALL_DATA) $(srcdir)/html/index.sgml $(DESTDIR)$(TARGET_DIR) || :; \
+	  $(INSTALL_DATA) $(srcdir)/html/index.sgml $${installdir} || :; \
 	  which gtkdoc-rebase >/dev/null && \
 	    gtkdoc-rebase --relative --dest-dir=$(DESTDIR) --html-dir=$(DESTDIR)$(TARGET_DIR) ; \
 	fi
