Can't tell if `geth` is connected to EVM One

[Pet3ris]

Hi there,

I'm using geth evmone combination in the following way geth --vm.evm=./libevmone.dylib, but the geth client doesn't seem to be accepting the VM (or indicating acceptance/rejection). The performance is very similar which is why I'm suspecting the EVM one shared library is not being used.

System information

Geth version: latest master
OS & Version: OS X 10.14.3
Commit hash : (if develop)

Expected behaviour

Geth to use provided EVMC interpreter or indicating why it won't use it.

Actual behaviour

Geth doesn't seem to react to the vm.evm argument at all.

Steps to reproduce the behaviour

Running geth --vm.evm=./libevmone.dylib

Backtrace

n/a