flameout using f77

[Randy Bush]

very 7.0-current many ports hit the following

    checking for f77... f77
    checking whether we are using the GNU Fortran 77 compiler... Bad system call (core dumped)
    no
    checking whether f77 accepts -g... Bad system call (core dumped)
    no
    checking the maximum length of command line arguments... (cached) 262144

any clue?

randy