Re: [HOpenGL] Compiling HOpenGL Examples with GHC 6.2 Mac OS

Hans Nikolaus Beck wrote:

I'm a Haskell newbee and try to compile the HOpenGL Examples with GHC 6.2 Mac OS X with it's build in openGL stuff [...]

I guess you are using the GHC.6.2.dmg from the GHC download page. The problem is that the examples from the HOpenGL tar files are for the old API, for a slightly longer explanation see: http://haskell.org/pipermail/hopengl/2003-December/000454.html

ghc --make Cube.hs

That's fine, --make is all that is needed, but you should use the examples written for the new API. I don't know if they are shipped with the Mac OS X installer, but the bleeding edge examples are always available from: http://cvs.haskell.org/cgi-bin/cvsweb.cgi/fptools/libraries/GLUT/examples/

[...] But how to say ghc what he needs ? Is it -addpackage or -l option (in other words "import" is the same as include in C?) ?

There are actually two parts: * By simply writing import Graphics.UI.GLUT in your Haskell source you get all the definitions from the GLUT package plus all the ones from the OpenGL package (i.e. GLU and GL stuff). This is quite similar to #include * You don't need the equivalents of "-I<blah>" or "-l<foo>" to build an executable using the GLUT/OpenGL packages when you use "--make". Everything is automagically handled behind the scenes. An explicit "-package GLUT" is only needed when you compile and link separately, see: http://haskell.org/ghc/docs/latest/html/users_guide/packages.html Cheers, S.