[GHC] #10110: Compiling unit fails with Loading temp shared object failed

[GHC]

#10110: Compiling unit fails with Loading temp shared object failed
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        Reporter:  trommler          |                   Owner:  trommler
            Type:  bug               |                  Status:  patch
        Priority:  highest           |               Milestone:  7.10.1
       Component:  Template Haskell  |                 Version:  7.10.1-rc2
      Resolution:                    |                Keywords:
Operating System:  Linux             |            Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash                              |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:  #10058            |  Differential Revisions:  Phab:D731
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Comment (by Herbert Valerio Riedel <hvr@…>):

 In [changeset:"1b7f59769052fd8193c6acc561216e070d0ca335/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="1b7f59769052fd8193c6acc561216e070d0ca335"
 Link temporary shared objects with `--no-as-needed`

 Some ELF link editors default to `--as-needed` and record only
 those libraries in DT_NEEDED tags that are needed to resolve
 undefined symbols in the shared object to be created.

 In Template Haskell we rely on all symbols that were defined
 in modules compiled so far to be available in the current
 temporary shared object. To prevent the link editor from
 dropping the DT_NEEDED tag for the previously linked temporary
 shared object we need to override the link editors default and
 specify `--no-as-needed` on the command line. This is for GNU ld
 and GOLD ld.

 This addresses #10110

 TODO: regression test

 Reviewed By: hvr

 Differential Revision: https://phabricator.haskell.org/D731
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10110#comment:7>
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