On 31 October 2005 09:36, Ross Paterson wrote:

On Mon, Oct 31, 2005 at 09:02:58AM +0000, Malcolm Wallace wrote:

...

There was talk at one stage of a standard language-extensions pragma, corresponding to your third option. {-# LANGUAGE cpp MPTC fundeps #-} I think SimonM has just implemented it for ghc, the rest of us are lagging behind.

{-# LANGUAGE CPP #-} has been supported for Hugs since last year, but only when building via Cabal. That is, the Cabal library handles it for --hugs, but assumes the compilers will handle it themselves.

The GHC version allows a list of the extensions from Language.Haskell.Extension to be given: {-# LANGUAGE CPP, ForeignFunctionInterface, MultiParamTypeClasses #-} I'm not sure the commas are a good idea, but it's written this way in the Cabal documentation. It's not too late to change this. Cheers, Simon