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[Support #HAA-836654]: Installing NetCDF 3.6.3

Hi Maggie,

> I was wondering if I could get a little help. I've been trying to
> install NetCDF 3.6.3 on my Macbook Pro. I'm running Mac OSx 10.6, and
> my compiler is gfortran.
> 
> The actual install seems to go well. I get a message saying that
> NetCDF was successfully installed. But when I do "make check" there
> seems to be some problem with the library path.
> 
> Attached are the output from the .configure, make, sudo make install,
> and make check commands.

It looks like all the tests for the C and Fortran interfaces and ncgen
and ncdump utility programs worked fine.  The only problem occurred in
trying to link the C++ interface with g++:

> Making check in cxx
> make nctst tst_failure
> depbase=`echo nctst.o | sed 's|[^/]*$|.deps/&|;s|\.o$||'`;\
>         g++ -DHAVE_CONFIG_H -I. -I.. -I../fortran           -I../libsrc -g 
> -O2 -MT nctst.o -MD -MP -MF $depbase.Tpo -c -o nctst.o nctst.cpp &&\
>         mv -f $depbase.Tpo $depbase.Po
> /bin/sh ../libtool --tag=CXX --mode=link g++ -g -O2 -o nctst nctst.o 
> ../cxx/libnetcdf_c++.la ../libsrc/libnetcdf.la
> libtool: link: g++ -g -O2 -o nctst nctst.o -Wl,-bind_at_load 
> ../cxx/.libs/libnetcdf_c++.a ../libsrc/.libs/libnetcdf.a
> ld: warning: in ../libsrc/.libs/libnetcdf.a, file was built for unsupported 
> file format which is not the architecture being linked (x86_64)
> Undefined symbols:
>   "_nc_put_vara_short", referenced from:
>      NcVar::put(short const*, long const*)in libnetcdf_c++.a(netcdf.o)
>      NcVar::put(short const*, long, long, long, long, long)in 
> libnetcdf_c++.a(netcdf.o)

The specific problem is that the version of g++ you are using,
/usr/bin/g++, compiles 64-bit code for the x86_64 platform, but you're
linking against a 32-bit library for the 32-bit i386 platform.  (You
can check that is your platform by running the "arch" command.)

If you only need the C and Fortran netCDF interfaces, there is no need
to build the C++ netCDF API, becasue it's not used by any of the
utilities or most of the third-party applications built on netCDF.  So
if you can get by without the C++ API, just invoke "make distclean"
and rebuild, setting the CXX environment variable to '' first, to
specify no C++ API is desired, then running the configure script and
"make all check" and "sudo make install" again.

If you really need the C++ interface, you might be able to rebuild
with the environment variable CXXFLAGS="-m32" to specify that g++
should build 32-bit code, or alternatively by setting CXX="g++ -m32".

You could also try the most recent release, 4.1.1, configuring with
"--disable-netcdf-4 --disable-cxx" to indicate that you only want the
netCDF-3 version and you don't want the C++ interface.

--Russ

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



Ticket Details
===================
Ticket ID: HAA-836654
Department: Support netCDF
Priority: Normal
Status: Closed