Build error: stack-protector enabled but compiler support broken about linux-sgx-driver

[sergeay]

You seem to have CONFIG_RETPOLINE=y. Where does this come from?
As far as I remember, it was introduced in kernel 4.16 but your Redhat platform has 3.10...
So this is weird.
Anyway if CONFIG_RETPOLINE=y then you may need the latest gcc version since older versions do not support it.
Again, something looks not standard in your platform as RETPOLINE was introduced in latest kernels which is not your case.
This problem has nothing to do with building the SGX driver and I would expect any kernel module build to hit the same issue.

[sergeay]

Build errors for >= kernel 4.15 have been fixed.

[jacmarjorie]

Is there a fix for this? I'm hitting the same issue with gcc 7.2.1 via devtoolset-7 and same kernel (on centos7):

-bash-4.2$ make
make -C /lib/modules/3.10.0-693.21.1.el7.x86_64/build SUBDIRS=/nfs/home/jaclyns/ati/linux-sgx-driver modules
make[1]: Entering directory '/usr/src/kernels/3.10.0-693.21.1.el7.x86_64'
arch/x86/Makefile:166: *** CONFIG_RETPOLINE=y, but not supported by the compiler. Toolchain update recommended..  Stop.
make[1]: Leaving directory '/usr/src/kernels/3.10.0-693.21.1.el7.x86_64'
make: *** [Makefile:15: default] Error 2

[sergeay]

CONFIG_RETPOLINE=y requires gcc version 7.3 or higher.
You probably have a older version, so check your version and upgrade gcc.

[sergeay]

Can this one be closed, was your problem resolved?

[jacmarjorie]

Yes gcc version was the issue, thank you.