Running XNNPACK on constrained environment

Hi,

I am exploring the possibility of running XNNPACK in a very constrained environment with no operating system, meaning: no syscalls, and no pthreads (or any other threading API).

I wanted to ask if there is an existing option, configuration, or guidance on how to achieve this? If full support for such an environment isn't available, is there at least a way to disable pthreads cleanly?

Any advice would be appreciated. Thanks.