> Both Flang and LFortra are in development. GFortran is currently the most adva...

> Both Flang and LFortra are in development. GFortran is currently the most advanced open source compiler.

Most of these tiny programs do at-least compile with ifc —

— fewer of them compile with gfortran —

— and fewer still compile with flang —

No doubt there's something ifc specific about the programs, or something obvious to a Fortran programmer but…