[Gtk2hs-users] cairo error: ghc.exe: unable to load package `cairo-0.12.0'

[Axel Simon]

Hi Daniel,

On 04.04.2011, at 16:01, Daniel wrote:

> Hi list,
>
> I've built gtk2hs successfully for ghc-7.0.2, but if I try to load  
> the example
> Drawing.hs from the cairo packages demo folder I get:
>
>
> *Main> :load Drawing.hs
> [1 of 1] Compiling Main             ( Drawing.hs, interpreted )
> Ok, modules loaded: Main.
> *Main> main
> Loading package transformers-0.2.2.0 ... linking ... done.
> Loading package mtl-2.0.1.0 ... linking ... done.
> Loading package array-0.3.0.2 ... linking ... done.
> Loading package containers-0.4.0.0 ... linking ... done.
> Loading package process-1.0.1.5 ... linking ... done.
> Loading package time-1.2.0.3 ... linking ... done.
> Loading package random-1.0.0.3 ... linking ... done.
> Loading package haskell98-1.1.0.1 ... linking ... done.
> Loading package cairo-0.12.0 ... linking ... <interactive>:
> C:/users/daniel/appd
> ata/roaming/cabal\cairo-0.12.0\ghc-7.0.2\HScairo-0.12.0.o: unknown
> symbol `_cair
> o_image_surface_get_data'
> ghc.exe: unable to load package `cairo-0.12.0'
>
> Have tried many things so far:
>
> * Starting with re-inited package database
> * Doing a $ nm /h/Gtk+/bin/libcairo-2.dll | grep -i  
> cairo_image_surface_get_data
> yielding 68de04d8 T _cairo_image_surface_get_data
> * Temporarily renaming libcairo-2.dll (the only one found on my  
> setup, even
> not-in-PATH ones are non-existent) yielding as expected "dll not  
> found" error
> * as you can see there is no "literal" space in the gtk+  
> installation path
> (h:\Gtk+), only in the users haskell package installation path, but  
> that's
> fairly standard with Windows I guess
> * Compilable with ghc --make ... though, but that's sadly not  
> sufficient as
> Chart package isn't installable due to this issue

If ghc --make works but interactively the object cannot be found, then  
it might be a ghc problem rather than ours, especially since the  
symbol exists in the DLL. Can somebody from the ghc group shed some  
light on the issue?

Cheers,
Axel