[GHC] #12840: GHC-internal triplets passed to sub-project configure scripts

[GHC]

#12840: GHC-internal triplets passed to sub-project configure scripts
-------------------------------------+-------------------------------------
           Reporter:  shlevy         |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Build System   |           Version:  8.1
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 In some cases GHC normalizes the target triplet passed to configure to a
 value that is not a valid autoconf target. #12487 mistakenly changed the
 build to pass these triplets to sub-project configure scripts, such as
 that for 'base', causing a configure error.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12840>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler