[Haskell-cafe] Conditional compilation for different versionsof GHC?

[Michael Snoyman]

On Wed, Dec 1, 2010 at 6:58 PM, Claus Reinke <claus.reinke at talk21.com> wrote:
>> This is obviously a personal preference issue, but I try to avoid the
>> Cabal macros since they don't let my code run outside the context of
>> Cabal. I often times like to have a test suite that I can just use
>> with runhaskell, and (unless you can tell me otherwise) I can't run it
>> anymore.
>>
>> Also, I think
>>
>> #if GHC7
>> ...
>> #endif
>>
>> is more transparent than a check on template-haskell.
>
> Just in case this hasn't been mentioned yet: if you want to be
> independent of cabal, there is the old standby
>
> __GLASGOW_HASKELL__
> http://haskell.org/ghc/docs/latest/html/users_guide/options-phases.html#c-pre-processor

Well, I think this is the official right approach. I was not aware of
that, thank you Claus.

Michael