diff -Nur gnu-efi-3.0.8.orig/Make.defaults gnu-efi-3.0.8-2/Make.defaults
--- gnu-efi-3.0.8.orig/Make.defaults	2018-03-15 02:54:51.000000000 +0800
+++ gnu-efi-3.0.8-2/Make.defaults	2020-03-17 23:23:49.602158451 +0800
@@ -87,7 +87,7 @@
 # Arch-specific compilation flags
 CPPFLAGS += -DCONFIG_$(ARCH)
 
-CFLAGS += -Wno-error=pragmas
+CFLAGS += -Wno-error=pragmas -fstack-protector-strong 
 
 ifeq ($(ARCH),ia64)
   CFLAGS += -mfixed-range=f32-f127
@@ -168,16 +168,15 @@
 ifeq (FreeBSD, $(findstring FreeBSD, $(OS)))
 CFLAGS  += $(ARCH3264) -g -O2 -Wall -Wextra -Werror \
            -fshort-wchar -fno-strict-aliasing \
-           -ffreestanding -fno-stack-protector
+           -ffreestanding 
 else
 CFLAGS  += $(ARCH3264) -g -O2 -Wall -Wextra -Werror \
            -fshort-wchar -fno-strict-aliasing \
-	   -ffreestanding -fno-stack-protector -fno-stack-check \
-           -fno-stack-check \
+	   -ffreestanding  \
            $(if $(findstring gcc,$(CC)),-fno-merge-all-constants,)
 endif
 
 ARFLAGS := rDv
 ASFLAGS += $(ARCH3264)
-LDFLAGS	+= -nostdlib --warn-common --no-undefined --fatal-warnings \
+LDFLAGS	+= -nostdlib --warn-common  --fatal-warnings \
 	   --build-id=sha1