problem with readline (mac os x)

Here's the relevant bits : checking for readline in -lreadline... yes checking for rl_readline_version... yes checking for rl_begin_undo_group... no configure: error: readline not found, so this package cannot be built Looks like it found readline, and then decided it didn't ? I'm having fairly consisten problems with cabal packages needing symlinks in /usr/local to work properly, i.e. it can't seem to find libraries in /sw/lib where fink puts them. Is that a cabal problem or a ghc issue ? Brian