$NetBSD: hadrian-clock.patch,v 1.1 2024/04/28 05:58:57 pho Exp $

Building "clock" needs patching on NetBSD due to its ccall to
clock_gettime(2) and clock_getres(2).

This hack can be removed if we upstream this patch and GHC adopts it in
hadrian/bootstrap/*.json. This incurs a small runtime cost but it's what
GHC devs recommend:
https://www.haskell.org/ghc/blog/20210709-capi-usage.html

--- clock-0.8.3/System/Clock.hsc.orig	2024-04-27 16:18:19.639792537 +0000
+++ clock-0.8.3/System/Clock.hsc
@@ -1,3 +1,4 @@
+{-# LANGUAGE CApiFFI #-}
 -- | High-resolution, realtime clock and timer functions for Posix
 --   systems. This module is being developed according to IEEE Std
 --   1003.1-2008: <http://www.opengroup.org/onlinepubs/9699919799/>,
@@ -132,8 +133,8 @@ foreign import ccall unsafe hs_clock_win
 foreign import ccall unsafe hs_clock_win32_getres_processtime :: Ptr TimeSpec -> IO ()
 foreign import ccall unsafe hs_clock_win32_getres_threadtime :: Ptr TimeSpec -> IO ()
 #else
-foreign import ccall unsafe clock_gettime :: #{type clockid_t} -> Ptr TimeSpec -> IO CInt
-foreign import ccall unsafe clock_getres  :: #{type clockid_t} -> Ptr TimeSpec -> IO CInt
+foreign import capi unsafe "time.h clock_gettime" clock_gettime :: #{type clockid_t} -> Ptr TimeSpec -> IO CInt
+foreign import capi unsafe "time.h clock_getres" clock_getres  :: #{type clockid_t} -> Ptr TimeSpec -> IO CInt
 #endif
 
 #if !defined(_WIN32)