Wine was using the function for a long time but was avoided on macOS up until wine-5.8 when the old buildbot was taken out of commission.

With how much of a PITA it is setting up a build environment for compiling wine on MacOSX10.8/10.9 I’d leave this as not our problem, it’s simply a matter of using the replacement library to fill in the gaps avoiding even needing a newer SDK.

On Mon, Aug 30, 2021 at 4:20 PM Erich E. Hoover <erich.e.hoover@gmail.com> wrote:

On Mon, Aug 30, 2021 at 1:53 PM Dean Greer <gcenx83@gmail.com> wrote:
> How badly is this function needed as there is a third-party solution that implements this and more missing functions.

We're currently using (even before this patch) the fstatat() function
to detect if crossing a symlink puts us on a different drive. I'd
definitely prefer for this to be "not our problem" by either using a
library to fill in these routines or upping the minimum supported Mac
OS X version. That said, it's not that hard on Mac OS X to implement
a replacement for fstatat() using fcntl(F_GETPATH).

Best,
Erich