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[netCDF #XXC-119083]: C++ netcdf

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  • Subject: [netCDF #XXC-119083]: C++ netcdf
  • Date: Wed, 10 Oct 2007 14:50:11 -0600
Hi Bob,

The examples are all compiled and run when "make check" is invoked in
building netCDF version 3.6.2 and later snapshots.  In particular, you
should see something like the following in the output from "make
check":

   ...
  make[3]: Entering directory `/shecky/n362_test/examples/CXX'
  *** SUCCESS writing example file simple_xy.nc!
  PASS: simple_xy_wr
  *** SUCCESS reading example file simple_xy.nc!
  PASS: simple_xy_rd
  *** SUCCESS writing example file sfc_pres_temp.nc!
  PASS: sfc_pres_temp_wr
  *** SUCCESS reading example file sfc_pres_temp.nc!
  PASS: sfc_pres_temp_rd
  *** SUCCESS writing example file pres_temp_4D.nc!
  PASS: pres_temp_4D_wr
  *** SUCCESS reading example file pres_temp_4D.nc!
  PASS: pres_temp_4D_rd

  *** Testing that CXX examples produced same files as C examples.
  *** checking simple_xy.nc...
  *** checking sfc_pres_temp.nc...
  *** checking pres_temp_4D.nc...
  *** All CXX example comparisons worked!
   ...

Output from building and testing netCDF 3.6.2 on a Linux system using
g++, showing the above examples worked, is here:
 
http://www.unidata.ucar.edu/software/netcdf/builds/3_6_2/nc3_make_distcheck_out.txt

The way the compilers are invoked in the output from make check is
pretty complicated, but for me this is all that's necessary, assuming
I have installed netCDF in /usr/local/ :

  g++ -I/upc/netcdf/include pres_temp_4D_wr.cpp -o pres_temp_4D_wr \
   -L/upc/netcdf/lib -lnetcdf_c++ -lnetcdf

If you get a bunch of undefined symbols when you do this, maybe your
library was built with a different compiler than g++.  Unfortunately,
libraries built with different C++ compilers are not necessarily
interoperable, due to different "name mangling" schemes for creating
the names of overloaded methods.

The C++ interface is supported.  In the future we will be upgrading it
to support Exceptions, namespaces, and templates, based on some work a
student did for us this summer.

You should be able to use all PGI comp[ilers for building netCDF, if
you don't want to use GNU compilers.

--Russ

Russ Rew                                         UCAR Unidata Program
address@hidden                     http://www.unidata.ucar.edu



Ticket Details
===================
Ticket ID: XXC-119083
Department: Support netCDF
Priority: Normal
Status: Closed