[Haskell-cafe] Using m4 as a preprocessor

Hello, today I tried to compile a Haskell program using m4 as preprocessor, with the {-# OPTIONS_GHC -F -pgmF m4 #-} pragma on top of a .hs file. I didn't add anything else, there are no ''' or '`' in the source. Upon compiling, ghc (7.8.3) complains: m4: cannot open `/tmp/ghc10655_0/ghc10655_1.hspp': No such file or directory I searched the net for a solution, but no dice (apparently there are no Haskell programs using -F -pgmF m4?), so I am writing here. Any ideas on what is wrong?