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I'm compiling WRF on my personal machine to play around, I've done it successfully on another computer of mine. Then I did a fresh install of Ubuntu Gnome 16.04. This time I want to know why I'm doing what.

So in my previous installation notes I wrote to myself I should download gfortran and g77. Whats the difference? Is gfortran just the language and g77 a compiler and what's g95?

If anyone wants add why netcdf is such a struggle to download that would help to, it took me a couple of days to get it right.

Thanks

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g77 is the original GNU Fortran compiler - it is now deprecated in favor of gfortran. For a discussion of some of the differences and their implications see Where has g77 gone to?

g95 is The other GCC-based Fortran compiler. It is maintained as an independent project, outside of the GNU/GCC compiler collection. gfortran was originally forked from the g95 codebase.

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