[Haskell-cafe] advanced cabal configuration

[Kazu Yamamoto (=?iso-2022-jp?B?GyRCOzNLXE9CSScbKEI=?=)]

Hi Erik,

> Could you use some combination of 'os' and 'arch' [0] in your cabal
> file to check for this, and then set a CPP define using 'CPP-options'?

To my understanding, the COff size is somethime 4 and sometime 8 on
32bit Linux. I don't think we can capture this difference with 'os'
and 'arch'.

--Kazu