Hi,

On 5/12/20 1:41 PM, Varun Wadekar via TF-A wrote:

While reviewing all the compiler flags used by TF-A, we couldn’t find information for the following options in the GCC manual [1]

• --fatal-warnings (https://review.trustedfirmware.org/plugins/gitiles/TF-A/trusted-firmware-a/+...)

Options passed to -Wa are assembler options, not compiler options. That one is documented here:

https://sourceware.org/binutils/docs/as/W.html

• -fno-stack-protector (https://review.trustedfirmware.org/plugins/gitiles/TF-A/trusted-firmware-a/+...)

This is the negative version of -fstack-protector, needed on compilers configured with --enable-default-ssp:

https://gcc.gnu.org/onlinedocs/gcc-10.1.0/gcc/Instrumentation-Options.html#i...

They are both valid.

Regards, Samuel