[GHC] #7315: Link error while compiling executables

[GHC]

#7315: Link error while compiling executables
---------------------------------+------------------------------------------
    Reporter:  bgamari           |       Owner:                  
        Type:  bug               |      Status:  new             
    Priority:  normal            |   Milestone:                  
   Component:  Compiler          |     Version:  7.7             
    Keywords:                    |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown    
  Difficulty:  Unknown           |    Testcase:                  
   Blockedby:                    |    Blocking:                  
     Related:                    |  
---------------------------------+------------------------------------------
Changes (by igloo):

  * difficulty:  => Unknown


Old description:

> On GHC master (ef786b6cbc5f67a673bf8c10be5311317c1e7b88) attempting to
> build any executable results in a linker error. For instance, `cabal
> install cmdargs` results in,
>
>      [37 of 37] Compiling Main             ( Main.hs, dist/build/cmdargs
> /cmdargs-tmp/Main.o )
>      Linking dist/build/cmdargs/cmdargs ...
>      /usr/bin/ld: cannot find -lHStransformers-0.3.0.0-ghc7.7.20121009
>      collect2: error: ld returned 1 exit status
>      cabal: Error: some packages failed to install:
>      cmdargs-0.10 failed during the building phase. The exception was:
>      ExitFailure 1
>
> Yet transformers appears to be installed (although the version suffix
> doesn't appear to match),
>
>      $ ls ~/.cabal/lib/transformers-0.3.0.0/ghc-7.7.20121009/
>      Control  Data  HStransformers-0.3.0.0.o  libHStransformers-0.3.0.0.a
> libHStransformers-0.3.0.0_p.a

New description:

 On GHC master (ef786b6cbc5f67a673bf8c10be5311317c1e7b88) attempting to
 build any executable results in a linker error. For instance, `cabal
 install cmdargs` results in,
 {{{
      [37 of 37] Compiling Main             ( Main.hs, dist/build/cmdargs
 /cmdargs-tmp/Main.o )
      Linking dist/build/cmdargs/cmdargs ...
      /usr/bin/ld: cannot find -lHStransformers-0.3.0.0-ghc7.7.20121009
      collect2: error: ld returned 1 exit status
      cabal: Error: some packages failed to install:
      cmdargs-0.10 failed during the building phase. The exception was:
      ExitFailure 1
 }}}
 Yet transformers appears to be installed (although the version suffix
 doesn't appear to match),
 {{{
      $ ls ~/.cabal/lib/transformers-0.3.0.0/ghc-7.7.20121009/
      Control  Data  HStransformers-0.3.0.0.o  libHStransformers-0.3.0.0.a
 libHStransformers-0.3.0.0_p.a
 }}}

--

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7315#comment:1>
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