[GHC] #8194: make install (at git ef01794) still fails

[GHC]

#8194: make install (at git ef01794) still fails
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        Reporter:  guest                  |            Owner:
            Type:  bug                    |           Status:  new
        Priority:  highest                |        Milestone:  7.8.1
       Component:  Build System           |          Version:  7.7
      Resolution:                         |         Keywords:
Operating System:  Linux                  |     Architecture:  x86
 Type of failure:  Installing GHC failed  |       Difficulty:  Unknown
       Test Case:                         |       Blocked By:
        Blocking:                         |  Related Tickets:
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Comment (by bos):

 The problem here is simple: {{{inplace/bin/ghc-cabal}}} does not know
 about shared libraries.

 Here is a simple, and ''incorrect'', patch that makes it unconditionally
 install shared libraries. With this hack in place, {{{make install}}}
 succeeds, and the installed code actually works.

 {{{
 --- a/utils/ghc-cabal/Main.hs
 +++ b/utils/ghc-cabal/Main.hs
 @@ -172,7 +172,8 @@ doCopy directory distDir
              progs' <- configureProgram verbosity stripProgram' progs
              let lbi' = lbi {
                                 withPrograms = progs',
 -                               installDirTemplates = idts
 +                               installDirTemplates = idts,
 +                               withSharedLib = True
                             }
              f pd lbi' us flags
 }}}

 The correct fix is probably to pass another parameter to {{{ghc-cabal}}}
 that tells it if we're building shared libraries, so that it can set
 {{{withSharedLib}}} appropriately.

 Weird followon observation: we copy ''two'' versions of many utilities
 into the install tree. There are statically linked versions in the main
 {{{bin}}} directory, and dynamically linked versions under {{{lib/ghc-
 VERSION/bin}}}. (It is the dynamically linked copy of {{{lib/ghc-
 VERSION/bin/ghc-pkg}}} that is crashing due to lack of shared libraries
 during the install.)

 I don't understand why there are two versions?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8194#comment:6>
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