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-rw-r--r--arch/x86/Makefile17
1 files changed, 10 insertions, 7 deletions
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index cacee981d16..ab48ab497e5 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -70,14 +70,17 @@ else
# this works around some issues with generating unwind tables in older gccs
# newer gccs do it by default
KBUILD_CFLAGS += -maccumulate-outgoing-args
+endif
- stackp := $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh
- stackp-$(CONFIG_CC_STACKPROTECTOR) := $(shell $(stackp) \
- "$(CC)" "-fstack-protector -DGCC_HAS_SP" )
- stackp-$(CONFIG_CC_STACKPROTECTOR_ALL) += $(shell $(stackp) \
- "$(CC)" -fstack-protector-all )
-
- KBUILD_CFLAGS += $(stackp-y)
+ifdef CONFIG_CC_STACKPROTECTOR
+ cc_has_sp := $(srctree)/scripts/gcc-x86_$(BITS)-has-stack-protector.sh
+ ifeq ($(shell $(CONFIG_SHELL) $(cc_has_sp) $(CC)),y)
+ stackp-y := -fstack-protector
+ stackp-$(CONFIG_CC_STACKPROTECTOR_ALL) += -fstack-protector-all
+ KBUILD_CFLAGS += $(stackp-y)
+ else
+ $(warning stack protector enabled but no compiler support)
+ endif
endif
# Stackpointer is addressed different for 32 bit and 64 bit x86