Re: problems for installation

From: David Brown <dbrown_at_nyahnyahspammersnyahnyah>
Date: Fri, 5 Jun 2009 12:42:25 -0600

Hi Phil,

It is likely that you have version of the libgfortran shared library
that is incompatible with the gfortran version that PyNGL depends on.
I will quote a message from Mary Haley that addresses this issue:

> You are running into the (infamous) libgfortran problem.
> Between versions of gfortran (4.1.x, 4.2.x, and 4.3.x), things are not
> compatible. That is, if you have an application built with gfortran
> 4.1.x, and it depends on libgfortran, then you can't use the
> libgfortran that comes with 4.3.x.
> I've attached for you to try. This is
> the one that comes with gfortran 4.1.
> Be sure to unlink the other one that you have pointing to
> Rename the attached one to, and then setenv
> LD_LIBRARY_PATH to include the path to it, and see if this works.
> Or, you can just put it in the same directory where your
> "" resides.

So follow the directions above with the attached libgfortran binary.
Hopefully it will work on Fedora Core 10. Let us know if you have

On Jun 4, 2009, at 11:44 PM, Phil Wei wrote:

> Dear collegue:
> I've installed pyNgl in my computer with a Fedora Core 10 system,
> prior to installing gfortran. I put all of the gcc 4.4.0 library in
> the diretory of /usr/lib. Then I began to import ngl. A message
> came out as following:
> >>> import Ngl
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "/usr/lib/python2.5/site-
> packages/PyNGL/", line 38, in <module>
> import fplib
> ImportError: /usr/lib/python2.5/site-packages/PyNGL/
> undefined symbol: _gfortran_pow_r8_i4
> What's going on this? Thank you for your answer in advance!
> --
> Phil Wei
> Assistant professor
> Department of Environmental Information and Engineering
> Cheng Chung Institute of Technology, National Defense University
> TEL: +886-3-3804210ext15
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Received on Fri Jun 05 2009 - 12:42:25 MDT

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