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Unfortunately Apple does not ship with gfortran. Get the gfortran dmg image from: https://gcc.gnu.org/wiki/GFortranBinaries
- http://coudert.name/software/gfortran-4.8.2-Lion.dmg for 10.7:
- for 10.8: http://coudert.name/software/gfortran-4.8.2-MountainLion.dmg
- for 10.9: http://coudert.name/software/gfortran-4.8.2-Mavericks.dmg
- for 10.10: http://coudert.name/software/gfortran-4.9.2-Yosemite.dmg
- for 10.11: http://coudert.name/software/gfortran-6.1-ElCapitan.dmg
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