[HOpenGL] Compiling HOpenGL under recent versions of GHC

[Weeble]

Hi there,
    I just recently installed Gentoo Linux with the intention of using 
HOpenGL. Unfortunately I'm having problems compiling - something seems 
to use a "_casm_" directive (I think) and GHC complains that this isn't 
valid. So far as I can tell it was removed from the language a while 
ago. Anyway, is this an expected problem or have I misconfigured 
something? If this isn't a known problem I'll try again and carefully 
document what I do. Thanks.

Regards,
    Weeble.