Guile version: 2.0.11 Machine type: x86_64-apple-darwin16.0.0 macOS 10.12 introduces the `clock_gettime` family of functions, with slight differences from the *BSD and Linux implementations.
The failure in linking is caused by a call at libguile/stime.c @ L841 to `clock_getcpuclockid`, which does NOT exist on macOS, while `_POSIX_CPUTIME` and `CLOCK_PROCESS_CPUTIME_ID` do exist. I have an absolutely hideous patch[1] locally applied that gets things compiling (and get-internal-run-time seems to work), but is otherwise terrible from a readability and maintainability standpoint. That said, narrowing it down to that single call should help make this fix easier. Cheers. Rahul [1] https://gist.github.com/rahulg/baa500e84136f0965e9ade2fb36b90ba
