checking for gfind... no
checking for find... /usr/xpg4/bin/find
checking for sort... /usr/xpg4/bin/sort
checking for GHC version date... given 7.9.20140322
checking for ghc... /opt/ghc-7.6.3/bin/ghc
checking version of ghc... unknown
configure: error: Cannot determine the version of /opt/ghc-7.6.3/bin/ghc.  Is it really GHC?