https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91731
keroro.90 at hotmail dot it changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |keroro.90 at hotmail dot it --- Comment #8 from keroro.90 at hotmail dot it --- Steve workaround also worked for me (Fedora 32 + MPICH). I just had to replace setenv with export as follows: export PATH="~/work/x/bin:$PATH" export FFLAGS="-w -fallow-argument-mismatch -O2" Hope this helps.