[Haskell-cafe] FunPtr error?
vigalchin at gmail.com
Tue Jun 10 02:01:54 EDT 2008
I have tried various things to no avail ....
vigalchin at ubuntu:~/FTP/Haskell/unix-18.104.22.168/tests/timer$ runhaskell
Preprocessing executables for Test-1.0...
[1 of 1] Compiling Main ( ./timer.hs,
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. ??
Kind regards, Vasili
On Mon, Jun 9, 2008 at 11:25 PM, Judah Jacobson <judah.jacobson at gmail.com>
> 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-22.214.171.124/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,
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