X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=Makefile;h=455fd484b20edb92a0c916c1be3cc7adffc6cfa4;hb=32665f2bbfed2e325d37236d9b0071a11a69124e;hp=b8b7f74696b4094de39ba65839de236edd5e643e;hpb=561a60f025f7b173830c4a2d51f5725bd2094ddf;p=firefly-linux-kernel-4.4.55.git

diff --git a/Makefile b/Makefile
index b8b7f74696b4..455fd484b20e 100644
--- a/Makefile
+++ b/Makefile
@@ -595,10 +595,24 @@ ifneq ($(CONFIG_FRAME_WARN),0)
 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
 endif
 
-# Force gcc to behave correct even for buggy distributions
-ifndef CONFIG_CC_STACKPROTECTOR
-KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector)
+# Handle stack protector mode.
+ifdef CONFIG_CC_STACKPROTECTOR_REGULAR
+  stackp-flag := -fstack-protector
+  ifeq ($(call cc-option, $(stackp-flag)),)
+    $(warning Cannot use CONFIG_CC_STACKPROTECTOR: \
+	      -fstack-protector not supported by compiler))
+  endif
+else ifdef CONFIG_CC_STACKPROTECTOR_STRONG
+  stackp-flag := -fstack-protector-strong
+  ifeq ($(call cc-option, $(stackp-flag)),)
+    $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \
+	      -fstack-protector-strong not supported by compiler)
+  endif
+else
+  # Force off for distro compilers that enable stack protector by default.
+  stackp-flag := $(call cc-option, -fno-stack-protector)
 endif
+KBUILD_CFLAGS += $(stackp-flag)
 
 # This warning generated too much noise in a regular build.
 # Use make W=1 to enable this warning (see scripts/Makefile.build)