[Haskell-cafe] FunPtr error?

[Galchin, Vasili]

I have tried various things to no avail ....

vigalchin at ubuntu:~/FTP/Haskell/unix-2.2.0.0/tests/timer$ runhaskell
Setup.lhs build
Preprocessing executables for Test-1.0...
Building Test-1.0...
[1 of 1] Compiling Main             ( ./timer.hs,
dist/build/timer/timer-tmp/Main.o )

./timer.hs:22:0:
    Unacceptable argument type in foreign declaration: Sigval
    When checking declaration:
        foreign import ccall safe "wrapper" mkNotify
          :: Notify -> IO (FunPtr Notify)

=> here is my Sigval def

data Sigval = SivalInt Int | SivalPtr (Ptr Char)

I did a find/grep for "Unacceptable argument" in the ghc compiler source and
assuming no typo I didn't find. ??

Thanks.

Kind regards, Vasili




On Mon, Jun 9, 2008 at 11:25 PM, Judah Jacobson <judah.jacobson at gmail.com>
wrote:

> 2008/6/9 Galchin, Vasili <vigalchin at gmail.com>:
> > Ryan,
> >
> >      I tried but the compiler didn't seem to like the keyword "import":
> >
> > vigalchin at ubuntu:~/FTP/Haskell/unix-2.2.0.0/tests/timer$ runhaskell
> > Setup.lhs build
> > Preprocessing executables for Test-1.0...
> > Building Test-1.0...
> > [1 of 1] Compiling Main             ( ./timer.hs,
> > dist/build/timer/timer-tmp/Main.o )
> >
> > ./timer.hs:29:8: parse error on input `import'
> >
>
> Hi Vasili,
>
> To fix that error, you probably just need to add the line "Extensions:
> ForeignFunctionInterface" to the .cabal file.   (That is the
> equivalent of calling ghc by itself with the command-line arguments
> -fffi or -XForeignFunctionInterface.)
>
> Hope that helps,
> -Judah
>
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