[PATCH] D54338: Fix threads build on GNU/Hurd

[Samuel Thibault via Phabricator]

sthibaul added a comment.

> Doesn't __APPLE__ imply __MACH__ anyway outside of targets that are way out of scope of libc++?

Well, possibly, it is just not directly related to my patch :)
(also it makes sense to keep it at least as documenting that it's the mach-powered apple OS that provides sys/param.h + sys/sysctl.h).


Repository:
  rCXX libc++

https://reviews.llvm.org/D54338