undefined reference to `__stg_EAGER_BLACKHOLE_INFO'

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.

Trac metadata

Trac field	Value
Version	6.12.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
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