[Haskell-cafe] duplicate definition for symbol
L.S., I am trying to run a program in GHCi, but I get a meesage that an object file is loaded twice; it appears that two different versions of package process are loaded, see the session text below. How can I solve this? GHCi, version 6.10.1: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer ... linking ... done. Loading package base ... linking ... done. Prelude :load Main.lhs [1 of 1] Compiling Main ( Main.lhs, interpreted ) Ok, modules loaded: Main. *Main :main Loading package syb ... linking ... done. Loading package base-3.0.3.0 ... linking ... done. Loading package array-0.2.0.0 ... linking ... done. Loading package containers-0.2.0.0 ... linking ... done. Loading package bytestring-0.9.1.4 ... linking ... done. Loading package old-locale-1.0.0.1 ... linking ... done. Loading package old-time-1.0.0.1 ... linking ... done. Loading package filepath-1.1.0.1 ... linking ... done. Loading package Win32-2.2.0.0 ... linking ... done. Loading package directory-1.0.0.2 ... linking ... done. Loading package random-1.0.0.1 ... linking ... done. Loading package time-1.1.2.2 ... linking ... done. Loading package stm-2.1.1.2 ... linking ... done. Loading package split-0.1.1 ... linking ... done. Loading package HUnit-1.2.0.3 ... linking ... done. Loading package QuickCheck-1.2.0.0 ... linking ... done. Loading package process-1.0.1.1 ... linking ... done. Loading package haskell98 ... linking ... done. Loading package mtl-1.1.0.2 ... linking ... done. Loading package parsec-2.1.0.1 ... linking ... done. Loading package network-2.2.0.1 ... linking ... done. Loading package hslogger-1.0.7 ... linking ... done. Loading package process-1.0.1.0 ... GHCi runtime linker: fatal error: I found a duplicate definition for symbol _runInteractiveProcess whilst processing object file C:\Programs\ghc\ghc-6.10.1\process-1.0.1.0\HSprocess-1.0.1.0.o This could be caused by: * Loading two different object files which export the same symbol * Specifying the same object file twice on the GHCi command line * An incorrect `package.conf' entry, causing some object to be loaded twice. GHCi cannot safely continue in this situation. Exiting now. Sorry. -- Met vriendelijke groet, Henk-Jan van Tuyl -- http://functor.bamikanarie.com http://Van.Tuyl.eu/ -- ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] duplicate definition for symbol
Am Freitag 19 Juni 2009 16:06:50 schrieb Henk-Jan van Tuyl: L.S., I am trying to run a program in GHCi, but I get a meesage that an object file is loaded twice; it appears that two different versions of package process are loaded, see the session text below. How can I solve this? http://www.haskell.org/cabal/FAQ.html#dependencies-conflict Wow, that one is really common. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] duplicate definition for symbol
Excerpts from Henk-Jan van Tuyl's message of Fri Jun 19 09:06:50 -0500 2009: L.S., I am trying to run a program in GHCi, but I get a meesage that an object file is loaded twice; it appears that two different versions of package process are loaded, see the session text below. How can I solve this? GHCi, version 6.10.1: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer ... linking ... done. Loading package base ... linking ... done. Prelude :load Main.lhs [1 of 1] Compiling Main ( Main.lhs, interpreted ) Ok, modules loaded: Main. *Main :main Loading package syb ... linking ... done. Loading package base-3.0.3.0 ... linking ... done. Loading package array-0.2.0.0 ... linking ... done. Loading package containers-0.2.0.0 ... linking ... done. Loading package bytestring-0.9.1.4 ... linking ... done. Loading package old-locale-1.0.0.1 ... linking ... done. Loading package old-time-1.0.0.1 ... linking ... done. Loading package filepath-1.1.0.1 ... linking ... done. Loading package Win32-2.2.0.0 ... linking ... done. Loading package directory-1.0.0.2 ... linking ... done. Loading package random-1.0.0.1 ... linking ... done. Loading package time-1.1.2.2 ... linking ... done. Loading package stm-2.1.1.2 ... linking ... done. Loading package split-0.1.1 ... linking ... done. Loading package HUnit-1.2.0.3 ... linking ... done. Loading package QuickCheck-1.2.0.0 ... linking ... done. Loading package process-1.0.1.1 ... linking ... done. Loading package haskell98 ... linking ... done. Loading package mtl-1.1.0.2 ... linking ... done. Loading package parsec-2.1.0.1 ... linking ... done. Loading package network-2.2.0.1 ... linking ... done. Loading package hslogger-1.0.7 ... linking ... done. Loading package process-1.0.1.0 ... GHCi runtime linker: fatal error: I found a duplicate definition for symbol _runInteractiveProcess whilst processing object file C:\Programs\ghc\ghc-6.10.1\process-1.0.1.0\HSprocess-1.0.1.0.o This could be caused by: * Loading two different object files which export the same symbol * Specifying the same object file twice on the GHCi command line * An incorrect `package.conf' entry, causing some object to be loaded twice. GHCi cannot safely continue in this situation. Exiting now. Sorry. The easiest solution would simply be to 'ghc-pkg unregister process-1.0.1.1', and then rebuild all the packages that depend on it against process-1.0.1.0. The reason this is happening is simply because you have two libraries you depend on, each of which depends on a different version of process. It's a fairly annoying error, that is prone to happen when you have upgraded versions of GHC's bootlibs (i.e. necessary libraries for GHC installation.) Austin ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
