[ncl-install] dyld: Library not loaded: /usr/local/lib/libgfortran.4.dylib

[Kevin Hallock]

Hi Chang,

Which method are you using to install NCL? Are you using a binary release from our website <https://www.earthsystemgrid.org/dataset/ncl.662.dap/file.html> or are you using conda <http://ncl.ucar.edu/Download/conda.shtml>?

The “ncl_ncarg-6.6.2-MacOS_10.14_64bit_gnu730.tar.gz” download from our website was built using libgfortran.4.dylib, specifically the gfortran-7.3-bin.tar.gz download on this page: http://hpc.sourceforge.net/ <http://hpc.sourceforge.net/>

If you would prefer to not install an older version of gfortran on your machine, you could try installing NCL using conda, which will install any dependency libraries (including libgfortran) it needs automatically.

I hope this helps,
Kevin

> On Oct 11, 2019, at 3:21 PM, Xi Chang via ncl-install <ncl-install at ucar.edu> wrote:
> 
> Dear NCL,
> 
> I am not able to install NCL 6.6.2 on my PC. There is no libgfortran.4.dylib for Mac Mojave... the only one that I have is libgfortran.5.dylib, so which ncl source code that I have to use?
> 
> Thank you
> Chang
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