linux/scripts/gcc-x86_64-has-stack-protector.sh

#!/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 $2
fi
[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> 2006-09-26 08:52:39 +00:00			`#!/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 $2`
			`fi`