[GHC] #7661: GHC build system does not detect opt-3.0 and friends

[GHC]

#7661: GHC build system does not detect opt-3.0 and friends
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Reporter:  singpolyma           |          Owner:  dterei          
    Type:  feature request      |         Status:  new             
Priority:  normal               |      Component:  Compiler        
 Version:  7.7                  |       Keywords:                  
      Os:  Unknown/Multiple     |   Architecture:  Unknown/Multiple
 Failure:  Building GHC failed  |      Blockedby:                  
Blocking:                       |        Related:                  
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Comment(by singpolyma):

 In my case I'm using llvm-3.0 because default llvm is 3.1, which has
 regressions when it comes to ARM.

 I'd suggest searching for opt-* and then checking if llc-samething exists
 and using both if found.  Hardcoding a list of known suffixes seems bad.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7661#comment:4>
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