On Tue, Oct 20, 2026 at 12:51 PM Gianluca Cannata <[email protected]> wrote: > I am trying to cross compile GNU Mach for aarch64 and so far I have > stepped the foot onto undefined symbols. > > Specifically, the missing symbols are hpclock_get_counter_period_nsec > and hpclock_read_counter.
Hi, you should mention which tree you're trying to compile. I see that my wip-aarch64 tree did not have these symbols, but that they are present in today's gnumach, apparently added by Zhaoming Luo (cc'ed) for high-precision clocks. Whether the concept of high-precision clocks being different from... some other kind of clocks is a general one (as opposed to just x86's HPET leaking), I can't immediately tell you. But see aarch64/arm/timer.c for a simple driver for ARM's architectural timer/counter. Sergey
