[Haskell-cafe] Installing HOpenGL

[Thomas Schilling]

I found the examples included in the source code very helpful.

   http://darcs.haskell.org/packages/GLUT/examples/

I think the RedBook directory contains the most examples.

If you want to know the modules a package exports you can use, e.g..

$ ghc-pkg describe OpenGL
name: OpenGL
version: 2.2.1
license: BSD3
copyright:
maintainer: sven.panne at aedion.de
stability:
homepage:
package-url:
description:
category:
author:
exposed: True
exposed-modules: Graphics.Rendering.OpenGL.GL.Antialiasing
                  Graphics.Rendering.OpenGL.GL.BasicTypes
                  [...]

These are the full names of the modules, you have to use to import  
them.  For GLUT there's one module that re-exports all others, iirc.

/ Thomas

On 25 jun 2007, at 01.21, Jimmy Miller wrote:

> I got the packages imported by using the full names (Graphics.UI.GLUT
> and Graphics.Rendering.OpenGL.GL).  The compiler doesn't recognize
> names like WindowPosition and WindowSize, but I assume that's because
> the code is so out of date (this is from the 2001 tutorial).  I'll
> look in the docs to see how to procede.
>
> On 6/24/07, Jimmy Miller <captainthunder at gmail.com> wrote:
>> Here it is.  Both OpenGL and GLUT are installed:
>>     Cabal-1.1.6.2, GLUT-2.1.1, HUnit-1.1.1, OpenGL-2.2.1,
>>     QuickCheck-1.0.1, Win32-2.1.1, base-2.1.1, cgi-3001.1.1,  
>> fgl-5.4.1,
>>     filepath-1.0, (ghc-6.6.1), haskell-src-1.0.1, haskell98-1.0,
>>     html-1.0.1, mtl-1.0.1, network-2.0.1, parsec-2.0, regex- 
>> base-0.72,
>>     regex-compat-0.71, regex-posix-0.71, rts-1.0, stm-2.0,
>>     template-haskell-2.1, time-1.1.1, xhtml-3000.0.2
>>
>> I tried using --make, but ghc said "could not find module GL"
>>
>> On 6/24/07, Thomas Schilling <nominolo at googlemail.com> wrote:
>> >
>> > On 25 jun 2007, at 00.18, Jimmy Miller wrote:
>> >
>> > > I've installed ghc 6.6.1, but when I try to compile and OGL  
>> program
>> > > like this:
>> > >
>> > > ghc -package GLUT ogl.hs
>> > >
>> > > I get the error:
>> > > Failed to load interface for `GLUT':
>> > >      Use -v to see a list of the files searched for.
>> > >
>> > > I tried running -v, but it doesn't tell me anything useful.
>> >
>> > Can you post the output of "ghc-pkg list"?  If that doesn't list
>> > GLUT, then it is not installed (or not correctly).  If it is
>> > installed, you can try
>> >
>> >    ghc --make ogl.hs
>> >
>> > That usually takes care of all the required packages (so can  
>> avoid a
>> > lot of fiddling around).
>> >
>> > / Thomas
>> >
>>
>>
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