[GHC] #6167: Compile stalls with pause returning ERESTARTNOHAND

[GHC]

#6167: Compile stalls with pause returning ERESTARTNOHAND
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    Reporter:  erikd             |       Owner:                     
        Type:  bug               |      Status:  new                
    Priority:  normal            |   Milestone:  7.6.1              
   Component:  Compiler          |     Version:  7.4.1              
    Keywords:                    |          Os:  Linux              
Architecture:  Unknown/Multiple  |     Failure:  Building GHC failed
  Difficulty:  Unknown           |    Testcase:                     
   Blockedby:                    |    Blocking:                     
     Related:                    |  
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Comment(by erikd):

 I switched from the "devel2" way of build ghc (defined in
 mk/build.mk.sample) to the "prof" way and suddenly everything built
 without any hang.

 Experimenting a little further it turns out that the important difference
 was that for "devel2" the `GhcStage2HcOpts` variable does not include
 `-fasm` so that the second stage was built un-registered.

 This raises two questsions:

 * Should the un-registered build correctly on PowerPC?

 * Should `GhcStage2HcOpts` use `-fasm`?

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6167#comment:8>
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