[GHC] #5215: process library does not build with GHC 7.0.x

[GHC]

#5215: process library does not build with GHC 7.0.x
---------------------------------+------------------------------------------
    Reporter:  Favonia           |       Owner:  Favonia                     
        Type:  bug               |      Status:  new                         
    Priority:  normal            |   Component:  libraries/process           
     Version:  7.0.3             |    Keywords:  interruptible waitForProcess
    Testcase:                    |   Blockedby:                              
          Os:  Unknown/Multiple  |    Blocking:                              
Architecture:  Unknown/Multiple  |     Failure:  Building GHC failed         
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 The process library in the trunk does not build with GHC 7.0.x. The reason
 is that GHC 7.0.x does not seem to support the "interruptible" FFI calls,
 but the macro asserts that GHC 7 supports it.

 People on #ghc (thanks to thoughtpolice) have confirmed that GHC 7.1.x
 supports it. I hereby propose a patch to bump the version check from 700
 to 710.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5215>
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