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| author | Arjan van de Ven <arjan@linux.intel.com> | 2006-09-26 10:52:39 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-09-26 10:52:39 +0200 |
| commit | 4f7fd4d7a79193ceda4ce77f75e22917d33fa154 (patch) | |
| tree | 433b106db54d73d4da6d3ad48cd55863ec812176 /arch/x86_64/Makefile | |
| parent | [PATCH] Add the __stack_chk_fail() function (diff) | |
| download | linux-4f7fd4d7a79193ceda4ce77f75e22917d33fa154.tar.xz linux-4f7fd4d7a79193ceda4ce77f75e22917d33fa154.zip | |
[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 <arjan@linux.intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
CC: Andi Kleen <ak@suse.de>
CC: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'arch/x86_64/Makefile')
| -rw-r--r-- | arch/x86_64/Makefile | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86_64/Makefile b/arch/x86_64/Makefile index d6472ddf5f6e..2b8d07c70106 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 |