If I change

 

     data Sigval = SivalInt Int | SivalPtr (Ptr Char)

to ...

 

    newtype Sigval = Sivalint Int | SivalPtr (Ptr Char)

 

then my test case builds and links. ??

 

 

Regards, Vasili

 

 

On Mon, Jun 9, 2008 at 11:01 PM, Galchin, Vasili <vigalchin@gmail.com> wrote:

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

vigalchin@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@gmail.com> wrote:

2008/6/9 Galchin, Vasili <vigalchin@gmail.com>:

> Ryan,
>
>      I tried but the compiler didn't seem to like the keyword "import":
>
> vigalchin@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