Hello David, > On 29 Jan 2022, at 11:14, dmainprice via Fortran <fortran@gcc.gnu.org> wrote:
> gfortran run on 64bit Mac ? Yes, gfortran has been running on (x86_64) 64bit Mac since macOS 10.6. > Any suggestions will F77 code run ? if it will compile with gfortran, then you could expect it to run, cheers Iain > > all the best and happy year > > David Mainprice > >