https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61831
--- Comment #21 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- > Ok, Dominique, you mean: compile everything with 4.9.1, then recompile > commands.f90 with 4.9.0 Yes > and build the executable with 4.9.0? At this point 4.9.0 or 4.9.1 should not matter. So if you use 'make' again I assume it will use 4.9.1.