scripts/gcc-x86_64-has-stack-protector.sh · 5d707e9c8ef2a3596ed5c975c6ff05cec890c2b4 · Clea OS / bsp / nxp / linux-seco-imx · GitLab

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stackprotector: update make rules · 5d707e9c

Tejun Heo authored 16 years ago


Impact: no default -fno-stack-protector if stackp is enabled, cleanup

Stackprotector make rules had the following problems.

* cc support test and warning are scattered across makefile and
  kernel/panic.c.

* -fno-stack-protector was always added regardless of configuration.

Update such that cc support test and warning are contained in makefile
and -fno-stack-protector is added iff stackp is turned off.  While at
it, prepare for 32bit support.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

5d707e9c

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  gcc-x86_64-has-stack-protector.sh  199 B 
  
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#!/bin/sh

echo "int foo(void) { char X[200]; return 3; }" | $1 -S -xc -c -O0 -mcmodel=kernel -fstack-protector - -o - 2> /dev/null | grep -q "%gs"
if [ "$?" -eq "0" ] ; then
	echo y
else
	echo n
fi