[Haskell-beginners] Just started working with Haskell. Need some help

Emanuel Koczwara poczta at emanuelkoczwara.pl
Mon Jan 20 10:11:43 UTC 2014


Hi,

W dniu 20.01.2014 08:06, Pyro Crane pisze:
> Hello again.
>
> Thank you all for your very helpful replies  (below)
>
> Here is the error I got when I tried to run my script :
>
> *Could not find module `Graphics.GD'*
> *Locations searched:*
> *Graphics/GD.hs*
> *Graphics/GD.lhs*
>
>
> As with the previous errors, I went on Google, to find out which 
> module and/or package I needed to install.
>
> Apparently, I need something called "GD"
>
> When I tried : *cabal install gd*
>
> I got the following :
>
>
> *Resolving dependencies...*
> *Configuring gd-3000.7.3...*
> *cabal-1.16.0.2: Missing dependencies on foreign libraries:*
> ** Missing (or bad) header file: gd.h*
> ** Missing C libraries: gd, expat*
>
>
> *Failed to install gd-3000.7.3*
> *cabal-1.16.0.2: Error: some packages failed to install:*
> *gd-3000.7.3 failed during the configure step.  The exception was: 
> ExitFailure 1*
>
>
>
>
> Upon further inquiries via google,  I found somewhere the following :
>
>
> *This problem can usually be solved by installing the system packages 
> that*
> *provide these libraries (you may need the "-dev" versions). If the 
> libraries*
> *are already installed but in a non-standard location then you can use 
> the*
> *flags --extra-include-dirs= and --extra-lib-dirs= to specify where 
> they are.*
>
>
>
> I thought I did this already.
>
> But, apparently, I did something wrong??
>
>

   This haskell package provides only library bindings. You need to 
install original library using system package manager.

Regards,
Emanuel

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