eolianoe [1] filed a deletion request for g77 [2]: Very outdated and gcc-fortran in [core] [a] can compile Fortran77 code. [a] https://www.archlinux.org/packages/core/x86_64/gcc-fortran/ [1] https://aur.archlinux.org//account/eolianoe/ [2] https://aur.archlinux.org//pkgbase/g77/