Building Haddock in GHC source tree (Re: Preparing for a review of pattern synonyms)

On Tue, 10 Dec 2013, Dr. ERDI Gergo wrote:

OK, I'll add pattern synonym support for Haddock.

Ummm..., so how do I build the version of Haddock included in the GHC source tree under utils? I tried just $ cd utils/haddock $ make but that fails with ===--- building final phase make -r --no-print-directory -f ghc.mk phase=final all_utils/haddock make[2]: *** No rule to make target `all_utils/haddock'. Stop. make[1]: *** [all_utils/haddock] Error 2 make[1]: Leaving directory `/home/cactus/prog/haskell/ghc/ghc'