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authorArjan van de Ven <arjan@linux.intel.com>2006-09-26 10:52:39 +0200
committerAndi Kleen <andi@basil.nowhere.org>2006-09-26 10:52:39 +0200
commit4f7fd4d7a79193ceda4ce77f75e22917d33fa154 (patch)
tree433b106db54d73d4da6d3ad48cd55863ec812176 /scripts/gcc-x86_64-has-stack-protector.sh
parent3162f751d04086a9d006342de63ac8f44fe0f72a (diff)
downloadleg-kernel-4f7fd4d7a79193ceda4ce77f75e22917d33fa154.tar.gz
[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 'scripts/gcc-x86_64-has-stack-protector.sh')
-rw-r--r--scripts/gcc-x86_64-has-stack-protector.sh6
1 files changed, 6 insertions, 0 deletions
diff --git a/scripts/gcc-x86_64-has-stack-protector.sh b/scripts/gcc-x86_64-has-stack-protector.sh
new file mode 100644
index 000000000000..325c0a1b03b6
--- /dev/null
+++ b/scripts/gcc-x86_64-has-stack-protector.sh
@@ -0,0 +1,6 @@
+#!/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