[vtk-developers] vtkNetCDF upgraded to 4.1.1

[Dave Partyka]

Thanks Sean, I'll take a look.

On Wed, Sep 8, 2010 at 4:56 PM, Sean McBride <sean at rogue-research.com>wrote:

> On Tue, 17 Aug 2010 15:11:12 -0400, Dave Partyka said:
>
> >I just upaded VTK's netcdf from 3.6.2 to 4.1.1. In addition to the
> >traditional C library I have also brought in the C++ version of the
> library
> >(vtkNetCDF_cpp). I spent time creating the proper DLL exports, allowing
> even
> >Windows developers to use the library! This provides a nicer API that
> >developers can use when writing new netcdf readers/writers. Also with
> netcdf
> >4.x we can now potentially use HDF5 based NetCDF files. See here for the
> >release notes for NetCDF 4. As always we value feedback from the
> community,
> >feel free to report any issues. In the mean time I will be monitoring the
> >dashboards.
>
> Dave,
>
> I believe there is some mangling missing after your change.  I just
> pulled VTK from git and my app, which links to both NetCDF and VTK, no
> longer links.  Error is:
>
> ld: duplicate symbol _nc_inq_type in /path1/libnetcdf.a(nc.o) and /path2/
> libvtkNetCDF.a(nc.c.o)
>
> If I do the following:
>
> nm libvtkNetCDF.a | grep " [TRD] "
>
> It lists several symbols that aren't prefixed by vtk_netcdf, namely:
>
> 0000000000003083 T _nc_inq_type
> 0000000000000043 T _nextUTF8
> 00000000000008ae T _nulldup
> 00000000000018ae T _utf8proc_NFC
> 0000000000001860 T _utf8proc_NFD
> 000000000000194a T _utf8proc_NFKC
> 00000000000018fc T _utf8proc_NFKD
> 0000000000001998 T _utf8proc_check
> 0000000000000343 T _utf8proc_codepoint_valid
> 0000000000000fd1 T _utf8proc_decompose
> 00000000000005d9 T _utf8proc_decompose_char
> 00000000000003c6 T _utf8proc_encode_char
> 0000000000000000 T _utf8proc_errmsg
> 000000000000054b T _utf8proc_get_property
> 00000000000000cf T _utf8proc_iterate
> 000000000000172b T _utf8proc_map
> 000000000000126a T _utf8proc_reencode
>
> nc_inq_type certainly should be in vtk_netcdf_mangle.h, not sure why/how
> you missed it.  My experience with updating VTK's freetype is that one
> must regenerate the symbol list on all the major platforms and merge the
> results.  Some symbols seem to only be exported on some OSes, see my
> comments in vtk_freetype_mangle.h.
>
> Not sure about the other symbols.  "utf8proc" looks like 3rd party code
> used by NetCDF itself.  I wonder if these symbols should not be exported
> at all, I'm guessing they are not part of NetCDF's public API.
>
> Cheers,
>
> --
> ____________________________________________________________
> Sean McBride, B. Eng                 sean at rogue-research.com
> Rogue Research                        www.rogue-research.com
> Mac Software Developer              Montréal, Québec, Canada
>
>
>
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