riscv-pk in ubuntu: "Error: unrecognized opcode fence.i' "

[mali-0024]

resolved by adding the following line in the "build.sh" file

Original build command:
CC= CXX= build_project riscv-pk --prefix=$RISCV --host=riscv64-unknown-elf
updated build command:
CC= CXX= build_project riscv-pk --prefix=$RISCV --host=riscv64-unknown-elf --with-arch=rv64gc_zifencei

[DavidZyy]

Thank for your soulution.