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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 /scripts/gcc-x86_64-has-stack-protector.sh | |
| parent | 3162f751d04086a9d006342de63ac8f44fe0f72a (diff) | |
| download | lwn-4f7fd4d7a79193ceda4ce77f75e22917d33fa154.tar.gz lwn-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 'scripts/gcc-x86_64-has-stack-protector.sh')
| -rw-r--r-- | scripts/gcc-x86_64-has-stack-protector.sh | 6 |
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 |