[Haskell-cafe] haddock - 'could not find link destination"

Andrew U. Frank frank at geoinfo.tuwien.ac.at
Thu Jan 21 08:51:20 EST 2010

i try to use haddock for documentation, but have no success. no output is 
produced. i assume i make some stupid mistake (not having used haddock before)

help is appreciated! thank you 

i get the following error:

$ haddock Hadtest2.hs
Warning: Main: could not find link destinations for:
    GHC.Types.Int GHC.Base.String

Hadtest2.hs is a simplistic test program with some parts copied from the 
haddock manual:

module Main (square, this) where

-- | a constant
this :: String
this = "this"

-- |The 'square' function squares an integer.
square :: Int -> Int
square x = x * x

main = do 
	putStrLn $ "test " ++ show (square 4)
	return ()

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