_SC_PHYS_PAGES

[Kazu Yamamoto (=?iso-2022-jp?B?GyRCOzNLXE9CSScbKEI=?=)]

Hi Ben,
Cc: ghc-devs,

I'm trying to build GHC head on OS X Mavericks with Xcode 5.

72f8b8d694362890a424f5fa21fef37cee921ecf introduced _SC_PHYS_PAGES.
"man 3 sysconf" of OS X says that _SC_PHYS_PAGES exists.
But actually I cannot find it in unistd.h.

This is one of the problems which I hit up on now. Would you suggest
me any workarounds?

--Kazu