| From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
| Date: Fri, 4 Nov 2016 19:39:39 +0100 |
| Subject: scripts/has-stack-protector: add -fno-PIE |
| |
| commit 82031ea29e454b574bc6f49a33683a693ca5d907 upstream. |
| |
| Adding -no-PIE to the fstack protector check. -no-PIE was introduced |
| before -fstack-protector so there is no need for a runtime check. |
| |
| Without it the build stops: |
| |Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: -fstack-protector-strong available but compiler is broken |
| |
| due to -mcmodel=kernel + -fPIE if -fPIE is enabled by default. |
| |
| Tagging it stable so it is possible to compile recent stable kernels as |
| well. |
| |
| Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
| Signed-off-by: Michal Marek <mmarek@suse.com> |
| Signed-off-by: Ben Hutchings <ben@decadent.org.uk> |
| --- |
| scripts/gcc-x86_64-has-stack-protector.sh | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/scripts/gcc-x86_64-has-stack-protector.sh |
| +++ b/scripts/gcc-x86_64-has-stack-protector.sh |
| @@ -1,6 +1,6 @@ |
| #!/bin/sh |
| |
| -echo "int foo(void) { char X[200]; return 3; }" | $* -S -x c -c -O0 -mcmodel=kernel -fstack-protector - -o - 2> /dev/null | grep -q "%gs" |
| +echo "int foo(void) { char X[200]; return 3; }" | $* -S -x c -c -O0 -mcmodel=kernel -fno-PIE -fstack-protector - -o - 2> /dev/null | grep -q "%gs" |
| if [ "$?" -eq "0" ] ; then |
| echo y |
| else |
