Compiling 32-bit GHC on a 64-bit Mac

[Johan Tibell]

Hi,

I need to reproduce a bug that only appears on 32-bit machines. I
don't own such a machine but I was hoping I could compile a 32-bit GHC
on my Mac and debug using that. What changes do I need to make (e.g.
to build/mk) to build a 32-bit GHC?

Cheers,
Johan