From 4f7fd4d7a79193ceda4ce77f75e22917d33fa154 Mon Sep 17 00:00:00 2001 From: Arjan van de Ven Date: Tue, 26 Sep 2006 10:52:39 +0200 Subject: [PATCH] Add the -fstack-protector option to the CFLAGS Add a feature check that checks that the gcc compiler has stack-protector support and has the bugfix for PR28281 to make this work in kernel mode. The easiest solution I could find was to have a shell script in scripts/ to do the detection; if needed we can make this fancier in the future without making the makefile too complex. Signed-off-by: Arjan van de Ven Signed-off-by: Andi Kleen CC: Andi Kleen CC: Sam Ravnborg --- arch/x86_64/Makefile | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/x86_64/Makefile') diff --git a/arch/x86_64/Makefile b/arch/x86_64/Makefile index d6472dd..2b8d07c 100644 --- a/arch/x86_64/Makefile +++ b/arch/x86_64/Makefile @@ -58,6 +58,9 @@ cflags-y += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,) cflags-y += $(call as-instr,.cfi_startproc\n.cfi_endproc,-DCONFIG_AS_CFI=1,) AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_endproc,-DCONFIG_AS_CFI=1,) +cflags-$(CONFIG_CC_STACKPROTECTOR) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh $(CC) -fstack-protector ) +cflags-$(CONFIG_CC_STACKPROTECTOR_ALL) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh $(CC) -fstack-protector-all ) + CFLAGS += $(cflags-y) CFLAGS_KERNEL += $(cflags-kernel-y) AFLAGS += -m64 -- cgit v1.1