[Haskell-cafe] Re: [Haskell] ANNOUNCE: Haddock version 22.214.171.124
simonmarhaskell at gmail.com
Wed Jan 9 07:03:24 EST 2008
Felipe Lessa wrote:
> On Jan 8, 2008 10:28 AM, David Waern <david.waern at gmail.com> wrote:
>> * Haddock now understands all syntax understood by GHC 6.8.2
> Does Haddock still define __HADDOCK__? There's a lot of code that uses
> this flag just to hide something Haddock didn't know.
Haddock itself never defined __HADDOCK__, because it didn't do the CPP
preprocessing itself. Cabal adds __HADDOCK__ itself when preprocessing
files for passing to Haddock. When used with Haddock version 2, Cabal no
longer defines __HADDOCK__ when preprocessing.
Haddock 2 can do the preprocessing itself, because it is processing the
Haskell files using the GHC API. In this case, if you want __HADDOCK__
defined, you have to add it explicitly with --optghc -D__HADDOCK__.
The easiest way to use Haddock 2 is via Cabal, which will automatically add
the appropriate options for your package, including the right -B option
which Haddock now needs in order that the GHC API can find its package
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