[MacPorts] #53031: macports ncl fails, mac install of ncarg works

[MacPorts]

#53031: macports ncl fails, mac install of ncarg works
--------------------+-------------------
 Reporter:  basmac  |      Owner:
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.3.5
 Keywords:  ncl     |       Port:  ncarg
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 Running the same script the macports /opt/local crashes with an error,
 whereas a separate default install of ncarg/ncl works from /usr/local.

 Attached is the log, running /opt/local ncl first then /usr/local ncl
 second using ( ncarg @6.3.0_8+gcc6 (active))

 macports fails on ElCap or new install on Sierra. The attached log is
 Sierra, but has the same error, on ElCap (ncarg @6.3.0_9+gcc5 (active))

 The library script ESMF_regridding.ncl are the same size in
 /usr/local/ncl/ as under /opt/local.

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Ticket URL: <https://trac.macports.org/ticket/53031>
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