[ncl-install] MacOSx precompile error with later version of gcc

[Kevin Hallock]

Hi,

It seems like there may be a problem with gcc/gfortran on your machine. The precompiled builds of NCL for Mac OS X are built against a particular version of gcc/gfortran, and it looks like you’re using Xcode’s gcc and Homebrew’s gfortran. Please see the following links for more information:
http://ncl.ucar.edu/Download/macosx.shtml#InstallCompilers <http://ncl.ucar.edu/Download/macosx.shtml#InstallCompilers>
http://ncl.ucar.edu/Download/macosx.shtml#MissingLibs <http://ncl.ucar.edu/Download/macosx.shtml#MissingLibs>
http://hpc.sourceforge.net/ <http://hpc.sourceforge.net/>

If you already use Homebrew in /usr/local, you may not want to install the HPC gcc/gfortran package into the same directory as your Homebrew packages. Using the conda package manager to install NCL might be preferable in this situation: http://ncl.ucar.edu/Download/conda.shtml <http://ncl.ucar.edu/Download/conda.shtml>

I hope this helps,
Kevin

> On Nov 17, 2017, at 11:32 AM, Joffa Applegate <jmappleg at asu.edu> wrote:
> 
> Hello, tried installing precompiled ncl code and have library error message. 
> 
> ng4ex xy01n -clean
> dyld: Library not loaded: /usr/local/lib/libgomp.1.dylib
>   Referenced from: /usr/local/ncl-6.4.0/bin/ncargpath
>   Reason: image not found
> 
> Here’s config info:
> 
> molly:~ jma$ sw_vers -productVersion
> 10.12.6
> molly:~ jma$ uname -m
> x86_64
> molly:~ jma$ gcc --version
> Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
> Apple LLVM version 9.0.0 (clang-900.0.38)
> Target: x86_64-apple-darwin16.7.0
> Thread model: posix
> InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
> molly:~ jma$ gfortran --version
> GNU Fortran (Homebrew GCC 7.2.0) 7.2.0
> 
> Thank you!
> 
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