> I do that for GlSurf and I use Glut !

Cool! I took a look at your Makefile and I found the answer to my  
question.
Actually I didn't think to pass the -framework <name> with the double  
quotes to the C compiler.

So, if this compilation issue does interest somebody, here is the  
"trick". To "custom link" with MacOSX frameworks, the compilation  
command must looks like :

ocamlc -custom <files needed> -o <executable name> -cclib -lobjc - 
ccopt "-framework <name>" ...

Thanks to Cristophe! :-)

> The window has an acqua look, but no way to customize the menubar ...

Well, I don't use Glut for I prefer the more "customizable" SDL  
framework. It may work better with it?

-- Julien Blond
LIP6/Bertin Technologies