diff -r 000000000000 -r 6474c204b198 modules/libpref/src/Makefile.in
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/modules/libpref/src/Makefile.in	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,33 @@
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+include $(topsrcdir)/config/rules.mk
+
+GARBAGE		+= $(addprefix $(DIST)/bin/defaults/pref/, \
+			mailnews.js editor.js \
+			aix.js unix.js winpref.js)
+
+GARBAGE		+= greprefs.js
+
+# TODO bug 813259 external files should be defined near their location in the source tree.
+grepref_files = $(topsrcdir)/netwerk/base/public/security-prefs.js $(srcdir)/init/all.js
+
+ifdef MOZ_DATA_REPORTING
+grepref_files += $(topsrcdir)/services/datareporting/datareporting-prefs.js
+endif
+
+ifdef MOZ_SERVICES_HEALTHREPORT
+ifneq (android,$(MOZ_WIDGET_TOOLKIT))
+grepref_files += $(topsrcdir)/services/healthreport/healthreport-prefs.js
+else
+grepref_files += $(topsrcdir)/mobile/android/chrome/content/healthreport-prefs.js
+endif
+endif
+
+greprefs.js: $(grepref_files)
+	$(call py_action,preprocessor,$(PREF_PPFLAGS) $(DEFINES) $(ACDEFINES) $(XULPPFLAGS) $^ -o $@)
+
+libs:: greprefs.js
+	$(INSTALL) $^ $(DIST)/bin/