Re: [Haskell-cafe] Installing HOpenGL

25 Jun 2007

      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@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the code is so out of date (this is from the 2001 tutorial).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  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  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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