[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:  8184
        Blocking:                    |  Related Tickets:
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Comment (by parcs):

 Ryan:

 Thanks for testing. Most of the time each thread will be either blocked on
 an MVar or compiling (or figuring out what to block on next), so I'm not
 sure where the excessive system time is coming from but I assume it's
 either from the RTS or the IO manager.

 I haven't tested `cabal` with my branch but I don't think my changes are
 causing the errors you're experiencing. I'm willing to bet that it's due
 to recent changes pushed to master. (Or maybe you forgot to do `git
 submodule update` after checking out my branch?)

 ----

 akio:

 #8209 is most likely what's being triggered, although I'm not positive.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/910#comment:43>
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