[GHC] #8104: By default GHC API looks for .dyn_o but only creates .o

[GHC]

#8104: By default GHC API looks for .dyn_o but only creates .o
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       Reporter:  edsko             |             Owner:
           Type:  bug               |            Status:  new
       Priority:  normal            |         Milestone:
      Component:  Compiler          |           Version:  7.6.3
       Keywords:                    |  Operating System:  Unknown/Multiple
   Architecture:  Unknown/Multiple  |   Type of failure:  None/Unknown
     Difficulty:  Unknown           |         Test Case:
     Blocked By:                    |          Blocking:
Related Tickets:                    |
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 See the example program for http://ghc.haskell.org/trac/ghc/ticket/7918 .
 If we change

 {{{
   dynFlags <- getSessionDynFlags
   void $ setSessionDynFlags (doDynamicToo dynFlags)
 }}}

 to

 {{{
   dynFlags <- getSessionDynFlags
   void $ setSessionDynFlags dynFlags
 }}}

 so that we get the default `DynFlags`, the program fails.

 The program loads two modules A and B, and tries to typecheck B. B uses a
 quasi-quoter defined in A. With the default `DynFlags` it will fail with

 {{{
     cannot find normal object file ‛./T7918A.dyn_o’
     while linking an interpreted expression
 }}}

 i.e., it is looking for the `.dyn_o` file but only creates the `.o` file.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8104>
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