After some review of the https://github.com/kamailio/kamailio/blob/093d0cca8c4a529b5330a0b85fa150d85a...
i can see that `FAST_LOCK` is not enabled for the `arm64`. is that intentional? if yes, I will revise the respective `CMakefile`, to not allow `FAST_LOCK` on arm64 and darwin machines