[GHC] #13979: Don't use gtar to produce FreeBSD binary distribution

[GHC]

#13979: Don't use gtar to produce FreeBSD binary distribution
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  bgamari
            Type:  task              |               Status:  patch
        Priority:  highest           |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13974            |  Differential Rev(s):  Phab:D3767
       Wiki Page:                    |
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Changes (by bgamari):

 * differential:  Phab:D3765 => Phab:D3767


Comment:

 Alright Make, you win.

 I spent a half an hour trying to work out where these duplicates were
 coming from. It seems like the `ifeq`s in `rules/build-prog.mk` aren't
 quite doing what we expect. Given that Hadrian is right around the corner
 I'm not terribly keen on sinking a bunch of time into this. Consequently,
 I propose the hack in Phab:D3767.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13979#comment:5>
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