[GHC] #8301: error BaseReg must be in a register for THREADED_RTS

[GHC]

#8301: error BaseReg must be in a register for THREADED_RTS
----------------------------------------+-----------------------------
        Reporter:  erikd                |            Owner:  simonmar
            Type:  bug                  |           Status:  new
        Priority:  high                 |        Milestone:  7.8.1
       Component:  Compiler             |          Version:  7.7
      Resolution:                       |         Keywords:
Operating System:  Linux                |     Architecture:  powerpc64
 Type of failure:  Building GHC failed  |       Difficulty:  Unknown
       Test Case:                       |       Blocked By:
        Blocking:                       |  Related Tickets:
----------------------------------------+-----------------------------

Comment (by erikd):

 The root of this problem is the following error assertion:

 {{{
 #if defined(THREADED_RTS) && !defined(NOSMP)
 #error BaseReg must be in a register for THREADED_RTS
 #endif
 }}}

 which then causes a cascade of undefined identifier errors.

 The fix is to come up with a valid way to define `BaseReg` for this case.
 Unfortunately how to do that is not obvious to me at the moment.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8301#comment:10>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler