[haskell-llvm] unknown symbol `DW.ref.__gxx_personality_v0'

[Nathan Howell]

GHCi's loader has a lot of quirks. C++ for the most part doesn't load
reliably... I've long since given up using llvm (or any C++ object files)
from GHCi and Template Haskell. Here's a related ticket:
http://hackage.haskell.org/trac/ghc/ticket/3333.

-n


On Sun, May 19, 2013 at 9:34 AM, Henning Thielemann <
lemming at henning-thielemann.de> wrote:

>
> On Sun, 19 May 2013, Henning Thielemann wrote:
>
>  I am trying to get llvm-base running with pkg-config. I already got
>> HelloJIT running both with static and dynamic linking. However when running
>> ghci, I get:
>>
>> examples> ghci-7.6.3 -Wall -package=llvm-tf-3.0.0.0.2
>> -package=llvm-base-3.0.0.2 HelloJIT.hs
>> GHCi, version 7.6.3: http://www.haskell.org/ghc/  :? for help
>> ...
>> Loading package llvm-base-3.0.0.2 ... linking ... ghc:
>> /cabal/lib/llvm-base-3.0.0.2/**ghc-7.6.3/HSllvm-base-3.0.0.2.**o:
>> unknown symbol `DW.ref.__gxx_personality_v0'
>> ghc: unable to load package `llvm-base-3.0.0.2'
>>
>>
>> I suspect that it has to do with the call to LLVMInitializeNativeTarget
>> in extra.cpp. I have read that gxx_personality is for exception handling
>> and can be found in stdc++. I added 'extra-libraries: stdc++' to
>> llvm-base.cabal, but this does not help.
>>
>> Any idea how to solve that problem?
>>
>
> six hours later ...
>
> I found the problem: It was the -fPIC option suggested by llvm-config:
>
> $ llvm-config --cflags
> -I/usr/lib/llvm-3.0/include -DNDEBUG -D_GNU_SOURCE
> -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -g
> -O2 -fomit-frame-pointer -fPIC
>
> Without the -fPIC option everything works. However, now I don't know what
> to actually write into the Cflags of llvm.pc.
>
>
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