Peter, I don’t know if this is your problem too, but I had to uninstall f77 which doesn’t support the fortran 90 stuff, and let gfortran handle it. Then, I had success. It would be good if someone could confirm or deny this, as I still feel a beginner.
Cheers,
Kasper
You should also be able to force the used compiler. I put some instructions here:
https://github.com/obspy/obspy/wiki/Installation-via-PyPi-from-source#fortran-compiler-issues
Please update if it somehow doesn’t work!
For the dev version we have docker based test containers which in a certain sense also document how to install ObsPy on various platforms:
https://github.com/obspy/obspy/tree/master/misc/docker_tests
Cheers!
Lion