[GHC] #9938: GHC's link step needs to be told which packages to link

[GHC]

#9938: GHC's link step needs to be told which packages to link
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        Reporter:  nomeata           |                   Owner:
            Type:  feature request   |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.11
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash                              |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Changes (by rwbarton):

 * type:  bug => feature request


Comment:

 Replying to [comment:5 simonpj]:
 > The Right Thing is, I guess, when given a `.o` file on the command line,
 to read its interface file, to find what packages it needs, and include
 those in any link step.

 A `.o` file on the command line could have come from anywhere, though; it
 might have been produced by compiling a C file and not have an associated
 interface file at all.

 We could record dependency information in the `.o` file in a special
 section, but that's a bit difficult and nonportable, and doing it just for
 this purpose seems a bit overkill.

 I believe GHC is behaving as expected here, and its behavior seems fine to
 me, so I turned this into a feature request ticket.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9938#comment:10>
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