On Fri, 23 Nov 2012, José Romildo Malaquias wrote:
When experimenting with the module LLVM.Core in GHCi on my gentoo linux
system, I have got a fatal error:
$ ghci
GHCi, version 7.6.1: http://www.haskell.org/ghc/ :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
Prelude> :m + LLVM.Core
Prelude LLVM.Core> IntEQ
Loading package llvm-base-3.0.1.0 ...
GHCi runtime linker: fatal error: I found a duplicate definition for symbol
LLVMAddAlwaysInlinerPass
whilst processing object file
/usr/lib64/llvm/libLLVMipo.a
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.
There are problems with the configure procedure of llvm-base. The
configure file fetches the llvm-base.buildinfo.in file and replaces the
variables with informations for your system. The result ends up in
~/.ghc/your-ghc-version/package.conf.d/llvm-base-3.0.0.1-some-hash.conf
You may post the content of this file for further diagnostics.
You said earlier that you use a custom path for llvm. Maybe you have
conflicts between two versions, one in /usr/lib and one in /usr/local/lib?
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