[GHC] #16257: -fexternal-interpreter with external C shared library leads to undefined symbol during template haskell phase

[GHC]

#16257: -fexternal-interpreter with external C shared library leads to undefined
symbol during template haskell phase
-------------------------------------+-------------------------------------
        Reporter:  guibou            |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.6.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by guibou):

 Note that instead of patching the library, `LD_PRELOAD` can be used:

 {{{
 LD_PRELOAD=/nix/store/6dhcmmfgy5fa0p3d235yaz4qfx8jhpar-
 gsl-2.5/lib/libgslcblas.so ghc -package hmatrix-gsl Foo.hs -fexternal-
 interpreter -fforce-recomp
 [1 of 1] Compiling Main             ( Foo.hs, Foo.o )
 Linking Foo ...
 }}}

 Succeed after 25s.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16257#comment:10>
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