[Haskell-cafe] HPC and Template Haskell (GHC 7.8.3, Yesod)

[Carter Schonwald]

i think the fix for this, or a related problem is merged into
cabal/cabal-install head, and will be in 1.22

does your problem go away if you dont enable profiled builds? (is so, its
likely the same problem)

On Fri, Dec 19, 2014 at 1:32 PM, David Turner <dct25-561bs at mythic-beasts.com
> wrote:

> Hi,
>
> I'm having trouble making a HPC build of a Yesod application. It fails
> with:
>
> /usr/bin/ld: dist/build/StreamReading/Config.dyn_o: relocation
> R_X86_64_PC32 against undefined symbol
> `_hpc_tickboxes_tracszmenterprisezm0zi0zi0_Settings_hpc' can not be
> used when making a shared object; recompile with -fPIC
>
> I've narrowed it down to a call to ghc and posted the output in all
> its gory detail at http://lpaste.net/116872 if that's any help.
>
> Of note is that dist/build/Settings.dyn_o is unexpectedly missing from
> the list of parameters to the last call to gcc, and the missing symbol
> is defined in the same. There are, in fact, quite a number of missing
> .dyn_o files in that list.
>
> Slightly weirdly, when I run the same command line again, it seems to
> work. At least, there are no errors reported and the exit code is 0.
>
> Any ideas?
>
> Cheers,
>
> David
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