g77 is in the ancient gcc33 / gcc34 compiler
normally called something like " gcc33-compat "
77 IS NOT!!!!! in the current gcc4.8 or 4.9
that version is FORTRAN is f90 and up
PS and if you are wondering that "77" stands for the YEAR 1977
( great year for movies http://www.imdb.com/title/tt0075648/
that years FORTRAN standard