[GHC] #4106: undefined reference to `__stg_EAGER_BLACKHOLE_INFO'

[GHC]

#4106: undefined reference to `__stg_EAGER_BLACKHOLE_INFO'
------------------------+---------------------------------------------------
    Reporter:  Mikolaj  |       Owner:          
        Type:  bug      |      Status:  new     
    Priority:  normal   |   Component:  Compiler
     Version:  6.12.1   |    Keywords:          
          Os:  Linux    |    Testcase:          
Architecture:  powerpc  |     Failure:  Other   
------------------------+---------------------------------------------------
 That's probably powerpc (Linux) specific (I know, I know), but perhaps
 somebody has an easy fix... I guess it's a problem with GHC (6.12.1,
 recompiled from source, to be sure), not the 'parallel' library.

 The bug is a failing test suite for
 http://hackage.haskell.org/package/parallel, versions from 1.1.0.1 to at
 least 2.2.0.1. Version 1.1.0.0 works fine and the culprit is the following
 clause in parallel.cabal:

 {{{
 if impl(ghc >= 6.11) {
     -- To improve parallel performance:
     ghc-options: -feager-blackholing
   }
 }}}

 Some relevant lines from the test output:

 {{{
 =====> conc057(threaded2)
 cd . && '/home/mikolaj/Desktop/ghc6-6.12.1/inplace/bin/ghc-stage2'
 -fforce-recomp -dcore-lint -dcmm-lint -no-user-package-conf  -dno-debug-
 output -o conc057 conc057.hs -O -threaded -eventlog -O0 -package parallel
 >conc057.comp.stderr 2>&1
 Compile failed (status 256) errors were:
 /usr/local/lib/parallel-2.2.0.1/ghc-6.12.1/libHSparallel-2.2.0.1.a(Strategies.o):
 In function `sXK_info':
 (.text+0x56): undefined reference to `__stg_EAGER_BLACKHOLE_INFO'
 /usr/local/lib/parallel-2.2.0.1/ghc-6.12.1/libHSparallel-2.2.0.1.a(Strategies.o):
 In function `sXK_info':
 (.text+0x5a): undefined reference to `__stg_EAGER_BLACKHOLE_INFO'
 }}}

 I attach the full test output from version 2.2.0.1 of parallel and a
 similar compilation failure, when using parallel 1.1.0.1 in vty in
 LambdaHack.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4106>
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