[GHC] #2021: let ghc find framework header files and link with frameworks located in $HOME/Library/Frameworks

[GHC]

#2021: let ghc find framework header files and link with frameworks located in
$HOME/Library/Frameworks
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 Reporter:  maeder           |          Owner:             
     Type:  feature request  |         Status:  new        
 Priority:  normal           |      Milestone:  6.10 branch
Component:  Compiler         |        Version:  6.8.2      
 Severity:  normal           |     Resolution:             
 Keywords:                   |     Difficulty:  Easy (1 hr)
 Testcase:                   |   Architecture:  Multiple   
       Os:  MacOS X          |  
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Comment (by maeder):

 Replying to [comment:7 igloo]:
 > How does this bug/patch relate to this patch, already in the HEAD and
 6.8 branch, by the way?:
 [...]
 > hunk ./compiler/ghci/Linker.lhs 1132
 > -   = do    { mb_fwk <- findFile mk_fwk (extraPaths ++
 defaultFrameworkPaths)
 > -   ; case mb_fwk of
 > -       Just fwk_path -> loadDLL fwk_path
 > -       Nothing   -> return (Just "not found") }
 > -       -- Tried all our known library paths, but dlopen()
 > -       -- has no built-in paths for frameworks: give up
 > +   = do { either_dir <- Control.Exception.try getHomeDirectory

 did not I use `IO.try`?

 The patch in `Linker.lhs` mimics (or tries to mimic) the behaviour of the
 dynamic linker and was not disputed. (see end of #1798)

 Indeed gcc and ld do not search the home directory for frameworks, I
 suppose mainly to avoid producing binaries depending on frameworks that
 are not generally available.

 Because GMP and GNUreadline frameworks are not generally available, it
 makes sense to extend ghc to also search the home directory when building
 and avoid the burden for developers to add appropriate options to ghc's
 command line manually.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2021#comment:8>
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