CONFIG_CC_STACKPROTECTOR_STRONG

[Muni Sekhar]

Hi All,


My Kernel is built with the following options:



CONFIG_CC_STACKPROTECTOR=y

CONFIG_CC_STACKPROTECTOR_STRONG=y





We use out-of-tree kernel modules in our project and I need to measure the
performance of it by using a bit older gcc version 4.8.5.



I can build the modules with gcc above 5 version, but when I try to use gcc
version 4.8.5 I’m getting the following error:



Makefile:693: Cannot use CONFIG_CC_STACKPROTECTOR_STRONG:
-fstack-protector-strong not supported by compiler



So it looks like gcc 4.8.5 does not support CONFIG_CC_STACKPROTECTOR_STRONG
option, but how to instruct gcc to ignore this one?



In runtime, is it possible to instruct kernel to ignore
“CONFIG_CC_STACKPROTECTOR_STRONG=y” (without building the kernel) by using
sysctl or any other method?


Any help is appreciated.


-- 
Thanks,
Sekhar
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