Hi, I tried compiling a hello-world program for cortex -a53/57 but, gcc does not recognize the mcpu option. Here is my command ...

aarch64-linux-gnu-gcc hello_world.c -mcpu=cortex-a53 -o hello_world

Does the compiler support these options? I see that lib/gcc/aarch64-linux-gnu/4.8.1/plugin/include/config/aarch64/aarch64-cores.def do have the entries for cortex a53 & a57.

Thanks, Kalai