[Haskell-cafe] parsec error message

i get the following error message new.o:fake:(.text+0x85): undefined reference to `parseczm2zi0_TextziParserCombin atorsziParsecziChar_oneOf_closure' new.o:fake:(.rodata+0x4): undefined reference to `parseczm2zi0_TextziParserCombi natorsziParsecziChar_oneOf_closure' collect2: ld returned 1 exit status when compiling the following code module Main where import System.Environment import Text.ParserCombinators.Parsec hiding (spaces) symbol = oneOf "!$%&|*+-/:<=>?@^_~" main = do return 1 any help is greatly appreciated. i am running ghc-6.6 on a windows xp machine.