Re: sd_nc* undefined references

From: Rick Grubin <grubin_at_nyahnyahspammersnyahnyah>
Date: Thu, 6 Mar 2008 08:43:29 -0700

Hi Jeff

>> Please edit the files
>> NclHDF.c
>> and
>> NclHDFEOS.c
>> located in the directory .../ni/src/ncl directory (relative to
>> your source code install root point) and remove the following line
>> from each:
>> #include <hdf/netcdf.h>
>
> Rick,
>
> The above change allowed me to compile NclHDFEOS.c. However, the
> compilation of NclHDF.c still complained about undefined
> variables. I tried some different things and found that moving the
>
> #include <hdf/netcdf.h>
>
> line above the
>
> #include <hdf/mfhdf.h>
>
> line and dropping the 'hdf/' part seems to have worked. i.e.:
>
> # diff -u NclHDF.c{.orig,}
> --- NclHDF.c.orig 2008-03-05 17:22:34.000000000 -0500
> +++ NclHDF.c 2008-03-06 09:45:00.000000000 -0500
> @@ -23,8 +23,8 @@
> #include <ncarg/hlu/NresDB.h>
> #include "defs.h"
> #define HAVE_NETCDF
> +#include <netcdf.h>
> #include <hdf/mfhdf.h>
> -#include <hdf/netcdf.h>
> #include "NclData.h"
> #include "NclFileInterfaces.h"
> #include <math.h>
>
> If for some reason, that is not the way to fix this, let me know.
> Otherwise I'll give this one a try.

It would seem that your directory .../include/hdf has a file
'netcdf.h' located there. This is likely due to the previous
install attempt, where '--enable-netcdf' was specified. Removing
this file should solve the problem. If not, it may be
necessary to reinstall HDF4.

If you find yourself removing any of the "hdf/" portions of an
include directive, your HDF installation is incorrect. The
file 'hdf/mfhdf.h' does include 'netcdf.h' within it, and if
there's a proper netCDF installation and NCL is configured to
find it, you will not see errors.

Apologies for this convolution, I know it's not clear -- it's a
vestige of a somewhat outdated install method. We are
working on improving this.

----
Rick Grubin NCAR/TDD/CISL/VETS
Visualization + Enabling Technologies
grubin_at_ucar.edu 303.497.1832

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Received on Thu Mar 06 2008 - 08:43:29 MST

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