[HOpenGL] OpenGL and Cabal installation

[Balazs Komuves]

Hello,

I'm not sure about Cabal, but the following should work (point 4 is the
critical step):

1) Download the (Haskell) GLUT source from Hackage
(
http://hackage.haskell.org/packages/archive/GLUT/2.1.1.2/GLUT-2.1.1.2.tar.gz
)
2) Unpack it into some directory, for example C:\OpenGL\GLUT-2.1.1.2
(make sure that the path does not contain spaces; MSys does not like them)
3) You will need the header files from the (not-haskell) GLUT source,
which you can download form
http://www.opengl.org/resources/libraries/glut/glut37.zip
Unpacke this too, say C:\OpenGL\GLUT-3.7
4) Set the environment variables (I don't know how to that on Vista, but on
XP
you can do that using Control Panel / System / ...)
C_INCLUDE_PATH to have C:\OpenGL\GLUT-3.7\include
and
LIBRARY_PATH to have C:\OpenGL\GLUT-3.7\lib
5) You should probably build the (not-haskell) GLUT library, because I guess
the binaries
are not included in the source; or you can download the binaries from the
same place
and but them into the directory C:\OpenGL\GLUT-3.7\lib
6) Now you can start MSys and build the Haskell GLUT package
from the source:
 $ runghc Setup.hs configure
 $ runghc Setup.hs build
 $ runghc Setup.hs install
Cabal install may work too.

Of course, all this assuming that you have the OpenGL package already built,
and the system can find the OpenGL headers. If not, then do the same for
OpenGL (except you won't need the C source, but some kind of SDK instead).

And yes, it's painful. OpenGL/GLUT used to be bundled with GHC, but they
dropped
it (among others) because the library maintainance cost is too high for
them;
they want to concentrate on the compiler (which is understandable).
And the promised "Haskell platform" which should solve the problem is
nowhere
in sight...

Balazs

2009/3/18 Mark Spezzano <mark.spezzano at chariot.net.au>

>  Hi all,
>
>
>
> I’m trying desperately to get OpenGL up and running.
>
>
>
> I type
>
> >cabal.exe configure and get the following
>
>
>
> ...
>
> checking GL/glut.h usability... no
>
> checking GL/glut.h presence... no
>
> checking for GL/glut.h... no
>
> checking for GLUT library... no
>
> checking for GL/glut.h... (cached) no
>
> checking GLUT/glut.h usability... no
>
> checking GLUT/glut.h presence... no
>
> checking for GLUT/glut.h... no
>
> configure: error: no GLUT header found, so this package cannot be built
>
> See `config.log' for more details.
>
>
>
> Where is it looking for these glut.h files? I’ve tried putting them
> everywhere in my PATH but msys won’t find them.
>
>
>
> Cheers,
>
>
>
> Mark Spezzano
>
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> 17/03/2009 4:25 PM
>
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