--- nspr/config/rules.mk.orig	Fri Oct 16 15:22:19 2015
+++ nspr/config/rules.mk	Wed Oct 21 08:55:29 2015
@@ -188,7 +188,7 @@ ifdef RELEASE_HEADERS
 	$(NSINSTALL) -t -m 0644 $(RELEASE_HEADERS) $(DESTDIR)$(includedir)/$(include_subdir)
 endif
 ifdef RELEASE_LIBS
-	$(NSINSTALL) -t -m 0755 $(RELEASE_LIBS) $(DESTDIR)$(libdir)/$(lib_subdir)
+	$(NSINSTALL) -t -m 0444 $(RELEASE_LIBS) $(DESTDIR)$(libdir)/$(lib_subdir)
 endif
 	+$(LOOP_OVER_DIRS)