DIST_FILES = extension/install.rdf
-PREF_JS_EXPORTS = $(srcdir)/xulapp/defaults/preferences/prefs.js
+# this interferes with e.g. Firefox prefs
+#PREF_JS_EXPORTS = $(srcdir)/xulapp/defaults/preferences/prefs.js
# include config.mk before using the AB_CD var
include $(topsrcdir)/config/config.mk