[GHC] #8812: Make *_stub.c files available again

[GHC]

#8812: Make *_stub.c files available again
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       Reporter:  ralphb            |             Owner:
           Type:  feature request   |            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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 In our project we would like to link Haskell functions into C++ code.  In
 principle this works fine using FFI.

 An additional constraint, however, is that we need to generate and link
 the object files ourselves.  Alas, ghc no longer keeps the *_stub.c files
 around.  (And fishing for files in /tmp is not a viable solution.)

 I would like to propose an additional command line switch to keep *_stub.c
 files, as previous compiler versions did by default.

 (Note that there is an older, similar request #7463, but our use case is
 much broader than that and not limited to unregistered compilation.)

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8812>
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