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Re: 20010806: netcdf 3.5.0 C++ interface warnings with AIX xlC

>To: netCDF Support <address@hidden>
>cc: Mary Haley <address@hidden>
>From: Charlie Zender <address@hidden>
>Subject: netcdf 3.5.0 C++ interface warnings with AIX xlC 
>Organization: UCAR/Unidata
>Keywords: 200108061648.f76GmE116074

Hi Charlie,

> Mary Haley built netcdf 3.5.0 on babyblue and temporarily 
> installed it in /usr/local/apps/netcdf-3.5 while we check it out
> for problems.
> When compiling code that uses the C++ interface with xlC the
> following warning messages always result.
> The message is very explicit and perhaps making this modification to
> netcdfcpp.h will improve ISO conformance and cause the message to 
> go away. Then again, maybe it won't and the problem is on my end.
> 
> Thanks,
> Charlie
> 
> /home/babyblue/zender/c++$ xlC -DAIX -qmaxmem=8192 -I. -I $HOME/include 
> -I$NETCDF_INC -I/usr/local/include -c spc_slr.cc -o $MY_OBJ_DIR/spc_slr.o
> "/usr/local/apps/netcdf-3.5/include/netcdfcpp.h", line 157.5: 1540-0070 (W) 
> The friend declaration must use the "class" keyword.  "friend class NcFile".
> "/usr/local/apps/netcdf-3.5/include/netcdfcpp.h", line 360.3: 1540-0070 (W) 
> The friend declaration must use the "class" keyword.  "friend class NcFile".
> "/usr/local/apps/netcdf-3.5/include/netcdfcpp.h", line 391.3: 1540-0070 (W) 
> The friend declaration must use the "class" keyword.  "friend class NcFile".
> 

Thanks, this problem and a couple of others are fixed in our latest
beta release at

  ftp://ftp.unidata.ucar.edu/pub/netcdf/netcdf-3.5.1-beta.tar.Z

From the RELEASE_NOTES:

                Added support for eight-byte integers in Fortran90
                interface.  This permits using F90 with Cray
                platforms, for example.

                Increased advisory limits in C netcdf.h and Fortran
                netcdf.inc for maximum number of dimensions,
                variables, and attributes.

                Changed C++ declarations "friend NcFile" to "friend
                class NcFile" in cxx/netcdfcpp.h to avoid conform to
                standard.

--Russ