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  • #5864

Closed
Open
Opened Feb 10, 2012 by Ian Lynagh <igloo@earth.li>@trac-igloo

Windows build fails: undefined reference to `_imp___imp__n_capabilities'

The Windows build is currently failing with:

"inplace/bin/ghc-stage2.exe" -fPIC -dynamic  -H32m -O -Wall -Werror -H64m -O0    -package-name dph-prim-par-0.6.0.1 -hide-all-packages -i -ilibraries/dph/dph-prim-par/. -ilibraries/dph/dph-prim-par/dist-install/build -ilibraries/dph/dph-prim-par/dist-install/build/autogen -Ilibraries/dph/dph-prim-par/dist-install/build -Ilibraries/dph/dph-prim-par/dist-install/build/autogen -Ilibraries/dph/dph-prim-par/.    -optP-include -optPlibraries/dph/dph-prim-par/dist-install/build/autogen/cabal_macros.h -package base-4.4.0.0 -package dph-base-0.6.0.1 -package dph-prim-interface-0.6.0.1 -package dph-prim-seq-0.6.0.1 -package old-time-1.0.0.7 -package random-1.0.1.1 -package vector-0.9.1  -Odph -funbox-strict-fields -fcpr-off -Wall -XHaskell98 -XTypeFamilies -XGADTs -XRankNTypes -XBangPatterns -XMagicHash -XUnboxedTuples -XTypeOperators -XFlexibleInstances -XFlexibleContexts -O2 -O -dcore-lint -fno-warn-deprecated-flags  -no-user-package-conf -rtsopts -Wwarn    -odir libraries/dph/dph-prim-par/dist-install/build -hidir libraries/dph/dph-prim-par/dist-install/build -stubdir libraries/dph/dph-prim-par/dist-install/build -hisuf dyn_hi -osuf  dyn_o -hcsuf dyn_hc -c libraries/dph/dph-prim-par/./Data/Array/Parallel/Unlifted/Distributed/TheGang.hs -o libraries/dph/dph-prim-par/dist-install/build/Data/Array/Parallel/Unlifted/Distributed/TheGang.dyn_o
"inplace/bin/ghc-stage2.exe" -fPIC -dynamic  -H32m -O -Wall -Werror -H64m -O0    -package-name dph-prim-par-0.6.0.1 -hide-all-packages -i -ilibraries/dph/dph-prim-par/. -ilibraries/dph/dph-prim-par/dist-install/build -ilibraries/dph/dph-prim-par/dist-install/build/autogen -Ilibraries/dph/dph-prim-par/dist-install/build -Ilibraries/dph/dph-prim-par/dist-install/build/autogen -Ilibraries/dph/dph-prim-par/.    -optP-include -optPlibraries/dph/dph-prim-par/dist-install/build/autogen/cabal_macros.h -package base-4.4.0.0 -package dph-base-0.6.0.1 -package dph-prim-interface-0.6.0.1 -package dph-prim-seq-0.6.0.1 -package old-time-1.0.0.7 -package random-1.0.1.1 -package vector-0.9.1  -Odph -funbox-strict-fields -fcpr-off -Wall -XHaskell98 -XTypeFamilies -XGADTs -XRankNTypes -XBangPatterns -XMagicHash -XUnboxedTuples -XTypeOperators -XFlexibleInstances -XFlexibleContexts -O2 -O -dcore-lint -fno-warn-deprecated-flags  -no-user-package-conf -rtsopts -Wwarn    -odir libraries/dph/dph-prim-par/dist-install/build -hidir libraries/dph/dph-prim-par/dist-install/build -stubdir libraries/dph/dph-prim-par/dist-install/build -hisuf dyn_hi -osuf  dyn_o -hcsuf dyn_hc libraries/dph/dph-prim-par/dist-install/build/Data/Array/Parallel/Unlifted/Distributed/TheGang.dyn_o       -shared -dynamic -dynload deploy  -no-auto-link-packages -o libraries/dph/dph-prim-par/dist-install/build/libHSdph-prim-par-0.6.0.1-ghc7.5.20120208.dll
libraries\dph\dph-prim-par\dist-install\build\Data\Array\Parallel\Unlifted\Distributed\TheGang.dyn_o:fake:(.text+0x72): undefined reference to `_imp___imp__n_capabilities'
Creating library file: libraries/dph/dph-prim-par/dist-install/build/libHSdph-prim-par-0.6.0.1-ghc7.5.20120208.dll.a
collect2: ld returned 1 exit status
make[1]: *** [libraries/dph/dph-prim-par/dist-install/build/libHSdph-prim-par-0.6.0.1-ghc7.5.20120208.dll] Error 1
make: *** [all] Error 2

The essence of the problem is:

module Foo where

import Control.Concurrent (getNumCapabilities)
import System.IO.Unsafe (unsafePerformIO)

numCapabilities :: Int
numCapabilities = unsafePerformIO getNumCapabilities
$ ../inplace/bin/ghc-stage2.exe -fPIC -dynamic -package-name foo-1.0 -hide-all-packages -package base -hisuf dyn_hi -osuf dyn_o -c Foo.hs -O -dcore-lint -o Foo.dyn_o
$ ../inplace/bin/ghc-stage2.exe -fPIC -dynamic -package-name foo-1.0 -hide-all-packages -package base -hisuf dyn_hi -osuf dyn_o Foo.dyn_o -shared -dynamic -dynload deploy -no-auto-link-packages -o libHSfoo-1.0-ghc7.5.20120208.dll
Foo.dyn_o:fake:(.text+0x72): undefined reference to `_imp___imp__n_capabilities'
Creating library file: libHSfoo-1.0-ghc7.5.20120208.dll.a
collect2: ld returned 1 exit status
Trac metadata
Trac field Value
Version 7.5
Type Bug
TypeOfFailure OtherFailure
Priority highest
Resolution Unresolved
Component Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture
Assignee
Assign to
7.6.1
Milestone
7.6.1
Assign milestone
Time tracking
None
Due date
None
Reference: ghc/ghc#5864