[GHC] #7097: linker fails to load package with binding to foreign library

[GHC]

#7097: linker fails to load package with binding to foreign library
-------------------------------+--------------------------------------------
    Reporter:  nus             |       Owner:              
        Type:  bug             |      Status:  new         
    Priority:  normal          |   Milestone:              
   Component:  Runtime System  |     Version:  7.4.2       
    Keywords:                  |          Os:  Windows     
Architecture:  x86             |     Failure:  None/Unknown
  Difficulty:  Unknown         |    Testcase:              
   Blockedby:                  |    Blocking:              
     Related:  2283            |  
-------------------------------+--------------------------------------------

Comment(by nus):

 To recap, the final linkage is done by the Windows dynamic loader using
 the DLL dependency information in the executable import tables. The
 partially linked object file `HSnetwork-2.3.0.14.o` which GHCi tries to
 load for the `network` package has no such information. In order for GCHi
 to be able to load such a package, it at least needs to:
  1. be supplied with that information (perhaps via `extra-libraries
 `/`extra-ghci-libraries` fields in the package's `.cabal` file);
  2. find the MinGW stub libraries the partially linked file depends upon
 (cf. `compiler/ghci/Linker.lhs`);
  3. know how to load the stub libraries (currently no `.idata` sections
 processing in `rts/Linker.c`).

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7097#comment:5>
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