srsorry

THX I use CC= CXX= build_project riscv-pk --prefix=$RISCV --host=riscv64-unknown-elf --with-arch=rv64gc_zifencei now. But it seems not work. The new error shows below: cc1: error: -march=rv64gc_zifencei: unsupported ISA substring '_zifencei' The full...

Maybe I need use other ISA.

After I re-downloaded the whole project of rocket-tools and recompiled, the problem went away. So I'm also not sure where the problem is. Anyway, thanks a lot for your help.