[GHC] #15860: Hadrian build fails on FreeBSD

[GHC]

#15860: Hadrian build fails on FreeBSD
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        Reporter:  raichoo           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Build System      |              Version:  8.7
  (Hadrian)                          |
      Resolution:                    |             Keywords:
Operating System:  FreeBSD           |         Architecture:  x86_64
 Type of failure:  Compile-time      |  (amd64)
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by snowleopard):

 I see, thanks! So far this has been our only way of handling errors in
 Hadrian, since this is what Shake recommends:

 > To raise a build error call error "error message". Shake will abort,
 showing the error message.

 (From https://github.com/ndmitchell/shake/blob/master/docs/Manual.md
 #tracing-and-debugging.)

 @NeilMitchell: Is there a more graceful way to report an error in Shake?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15860#comment:5>
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