[Haskell-beginners] Problem to compile an example of Data Parallel Haskell

Brent Yorgey byorgey at seas.upenn.edu
Tue Oct 13 11:51:39 EDT 2009


On Mon, Oct 12, 2009 at 02:26:28PM +0200, Edgar GOMES DE ARAUJO wrote:
> Hi,
>
> I have tried to compile an example of DPH (Data prallel Haskell)  but  I am 
> not getting any success.
> The target is the concmop.hs 
> (http://darcs.haskell.org/ghc-6.10/packages/dph/examples/concomp/) for 
> calculate connected components in a graph. I am using GHC 6.10.4 compiled 
> with extras libs (which also includes DPH 0.3.0).
> I've got this error. Seems that GHC can't find these functions/types.
>
> ---------------------------------------------------------------------------------------------------------------------
> edgar at edgar-ubuntu:~/Desktop/dph$ ghc --make -fdph-par -XTypeOperators 
> ./concomp.hs
> [1 of 4] Compiling Graph            ( Graph.hs, Graph.o )
>
> Graph.hs:11:45: Not in scope: type constructor or class `:*:'
>
> Graph.hs:23:6: Not in scope: `hPutU'
>
> Graph.hs:33:15: Not in scope: `hGetU'
> ---------------------------------------------------------------------------------------------------------------------

Perhaps that file is just missing an import?  IIRC these things are
from Data.Array.Vector, from the uvector package.

-Brent


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