[Hat] Problems with configure

Hello, Im trying to install hat in GNU/Linux, and i got this error when running ./configure: Configuring for hat... [ 2.01 ] -------- Looking for already-installed Haskell compilers: Looking for ghc... found 6.2.2 WARNING: hat-2.02 needs a version of ghc >= 5.04. Looking for nhc98... (not found) Looking for hmake... head: `-1' option is obsolete; use `-n 1' since this will be removed in the future found 3.08 ERROR: hat needs at least one of ghc or nhc98. The confusing part for me is that i already have ghc located in: /usr/bin/ghc, and apparently the binary is found according to the first message, nevertheless, it exist with that error. Any help appreciated, Regards,