[GHC] #910: --make should have a -j flag for parallel building

[GHC]

#910: --make should have a -j flag for parallel building
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        Reporter:  igloo             |            Owner:
            Type:  feature request   |           Status:  patch
        Priority:  normal            |        Milestone:  _|_
       Component:  Compiler          |          Version:  6.4.2
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:  N/A               |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by rrnewton):

 By the way, I've had various hard-to-pin-down problems with changing
 capabilities at runtime myself.

 Is it possible in this case to just disable the use of that feature for
 the initial release?  That is, you would have to use +RTS -N to get real
 speedup.  But, hey, it's kind of an advanced compilation feature anyway.
 In this scenario we could get a lot of testing experience with parallel
 builds without setNumCapabilities and then combine them when there is
 higher confidence.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/910#comment:35>
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