Hello Robyn,
https://superuser.com/questions/1446192/macports-error-when-trying-to-select... https://superuser.com/questions/1446192/macports-error-when-trying-to-select-open-mp-fortan-for-mpi
I don’t know if they found their solution but could somebody answer this person and so solve my problem as well.
I am still trying to track this down.
I suspect that part of the reason is that macports updated its default gcc compiler from gcc8 to gcc9 which may cause this.
I can reproduce the problem on my MacPorts VM test setup but it being very slow have not been able to test it fully.
Reading the ports file https://github.com/macports/macports-ports/blob/master/science/openmpi/Portf... it would seem as if builds using gcc should contain the fortran bindings.
I would try;
sudo port uninstall gcc8 sudo port install gcc9 openmpi-gcc9
then try and see if
sudo port select --list mpi
Yours, Roland