--- ./Makefile.flags.orig	2017-11-28 13:03:43.352203675 +0100
+++ ./Makefile.flags	2017-11-28 13:04:01.160328525 +0100
@@ -102,7 +102,7 @@
 endif
 
 ifeq ($(CONFIG_PIE),y)
-CFLAGS_busybox += $(ARCH_PIE)
+CFLAGS_busybox += $(ARCH_PIE) -Wl,-z,relro,-z,now
 CFLAGS += $(ARCH_FPIE)
 endif