$ cat Test.hs
import Graphics.UI.SDL

main = do
  t <- getTicks
  putStrLn $ show t

$ runhaskell Test.hs
Test.hs:
/Users/simon/.cabal/lib/SDL-0.6.2/ghc-6.12.3/HSSDL-0.6.2.o: unknown symbol `_SDL_FreeSurface'
Test.hs: Test.hs: unable to load package `SDL-0.6.2'
$ runhaskell -L/opt/local/lib -lSDL Test.hs
4110078002