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Re: 950717: appending to a netCDF using C++ interface

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  • Subject: Re: 950717: appending to a netCDF using C++ interface
  • Date: Tue, 18 Jul 1995 08:47:17 -0600
Vivian,

> > This bug in the C++ interface was fixed by the patch number 4 for netCDF
> > 2.3.2.  You can obtain this patch from 
> > 
> >     ftp://ftp.unidata.ucar.edu/pub/netcdf/2.3.2-patch4
> > 
> > or you can get an already-patched version of the whole source distribution
> > from
> > 
> >     ftp://ftp.unidata.ucar.edu/pub/netcdf/netcdf-232pl4.tar.Z
> 
> Well, we got the already-patched version of the whole source distribution,
> but it gives us the following compiler error when we try to make library
> from the c++ directory:
> 
> kiwi:chao> make library
> CC -c -g -I../libsrc  netcdf.cc
> CC: "ncvalues.hh", line 20: error:  ncbyte redefined: typedef char  and 
> typedef unsigned char  (1695)
> make: *** [netcdf.o] Error 1
> 
> We are using the HP 700 series c++ compiler and the HPUX 9.05 OS.  Which 
> typedef should we remove?  We have both c and c++ netcdf users.

You have to run the "configure" script first before running "make", so that
libsrc/netcdf.h gets created from libsrc/netcdf.h.in.  The libsrc/netcdf.h
that is included in the patched distribution appears to be an old version
containing the erroneous typedef for ncbyte that was supposedly corrected
with patch 3.  There should be no typedef for ncbyte in netcdf.h, just in
netcdf.hh.  As it says in the comments at the top of the source for patch 4:

    Note that after applying patch3, you *must* remake the netCDF library from
    scratch (from the `configure' step), because the libsrc/netcdf.h file is
    regenerated by the `configure' script from one of the files changed by this
    patch.

I'm sorry about the complexity of building netCDF after these patches,
but we're currently preparing netCDF version 2.4 that will have these
problems fixed (and probably introduce interesting new problems :-).

I just tried building from netcdf-232pl4.tar.Z on an HP-UX 9.05 system
beginning with the "configure" step, and it worked fine.

--Russ

______________________________________________________________________________

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