Re: Shared object error

Hi Kay,

Its hard to know where/what is dragging in this symbol "In_", especially without seeing the fortran code. As for the use of the wrapit77 comand below, the output redirection ">!" is C-shell notation whereas ">|" is bash notation (isn't that an unfortunate incompatibility!), and since you are ending up with a file named "!", I'm guessing you are using bash.

Hope that helps…
Rick

On May 28, 2014, at 5:37 PM, Kay Shelton <kay.shelton@gmail.com> wrote:

> Hello NCL-talkers,
>
> I was wondering if you may be able to provide some assistance with an issue I am having when trying to load a shared object into NCL.
>
> I have a Fortran 77 subroutine, which appears to compile just fine with various WRAPIT commands (eg the default WRAPIT, and with the -fPIC and -m64 options). However, when I load the .so into NCL I receive the following error:
>
> Copyright (C) 1995-2013 - All Rights Reserved
> University Corporation for Atmospheric Research
> NCAR Command Language Version 6.1.2
> The use of this software is governed by a License Agreement.
> See http://www.ncl.ucar.edu/ for more details.
> warning:An error occurred loading the external file ./sub.lines.so, file not loaded
> ./sub.lines.so: undefined symbol: ln_
>
> Note this is the second .so I am loading in this script, the first suffers no such issues. I have attempted to locate the "ln_" on my system but only get the following:
>
> /usr/local/MATLAB/R2013a/help/econ/exact_soln_minus_euler_approx.png
>
> I am guessing this is not what I am looking for. I have run through the troubleshooting tips associated with both WRAPIT and with loading shared objects, but have found no solutions. The only thing I have come up against (and here I may well be applying this technique completely inappropriately) occurred when I attempted to use "wrapit77", following this example http://www.ncl.ucar.edu/Document/Manuals/Ref_Manual/NclExtend.shtml#wrapit77 . When I ran wrapit77 < wrapper_input >! wrapper_W.c (using my .f file as the wrapper_input, with appropriate wrapper text), all I ended up with was a file named "!", so no .c was created, but no error was shown.
>
> Consequently I am a little at a loss, although I am sure I may have made a simple error somewhere. Note I have also tried creating the shared object by putting the wrapper text into a separate .stub file. This method creates the .so just fine, but I get the same undefined symbol error as before when attempting to run the NCL script.
>
> Any suggestions would be very welcome.
>
> Thanks,
> Kay
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Received on Thu May 29 10:44:01 2014