Re: [Haskell-cafe] Being Compatible

At 10:47 08/10/04 +0100, Malcolm Wallace wrote:

John Goerzen writes:

...

My initial thought was to use the cpp-style ifdefs I've seen elsewhere to mask those unsupported features on those particular systems. But Hugs at least doesn't support that, and I've found it extremely difficult to find a list of predefined macros for the other systems anyway.

I thought Hugs does support preprocessing, with the -F option?

Yes, but it requires an external preprocessor program to be available. (Enter cpphs.) #g --

The usual cpp macros are:

__HASKELL98__ # supports at least the '98 standard __GLASGOW_HASKELL__ = 504, 602, etc __HUGS__ __NHC__ __HBC__

You might also occasionally see

__HADDOCK__ # for documentation-only preprocessing __HAT__ # for the Hat tracer

Regards, Malcolm _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

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