Hello Mario,
It does seem that your suspicion is correct; it appears that I do have both gcc-10 and gfortran-10 installed, and the Macports selection is being overridden. See the attached text files you requested.
Thank you.
To fix this you can edit the file
configs/sim/OptionList
and also (the path might be a bit fuzzy):
simfactory/mdb/optionlists/generic-mp-10.cfg
and replace all gcc-10, g++-10 and gfortran-10 by the -9 flavors or by adding the -fXXX options that I had mentioned before.
Afterwards you will have to run:
simfactory/bin/sim build --reconfig
which will instruct simfactory to update the build options using the values in configs/sim/OptionList .
Yours, Roland