[GHC] #12443: DEFAULT_TMPDIR is documented, but doesn't exist

[GHC]

#12443: DEFAULT_TMPDIR is documented, but doesn't exist
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           Reporter:  rwbarton       |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Documentation  |           Version:  8.0.1
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  Documentation
  Unknown/Multiple                   |  bug
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 The user's guide claims
 {{{
     Even better idea: Set the :envvar:`DEFAULT_TMPDIR` :command:`make`
 variable when
     building GHC, and never worry about :envvar:`TMPDIR` again. (see the
 build
     documentation).
 }}}
 But only vestiges of this functionality remain in `mk/config.mk.in` and in
 `nofib`, and it doesn't appear to actually do anything. I suggest removing
 it from the documentation.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12443>
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