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960731: NetCDF 2.4.2: undefined XDR symbols on Solaris 2.5

Nello,

>Date: Wed, 31 Jul 1996 20:25:19 +0200 
>From: Super-User <address@hidden>
>Organization: IRPEM-CNR 
>To: Steve Emmerson <address@hidden>
>Subject: Re: 960731: NetCDF 2.4.2: undefined XDR symbols 
>Keywords: 199607301748.AA18939

In the above message you wrote:

> adria{root}-> uname -a
> SunOS adria 5.5 Generic sun4u sparc SUNW,Ultra-1
> adria{root}-> ar t /usr/lib/libc.a | grep xdr
> adria{root}-> ar t /usr/lib/libnsl.a | grep xdr
> xdr.o
> xdr_array.o
> xdr_float.o
> xdr_mem.o
> xdr_rec.o
> xdr_refer.o
> xdr_sizeof.o
> xdr_stdio.o
> rpcb_st_xdr.o
> yp_b_xdr.o
> yp_xdr.o
> nis_xdr.o
> nis_cback_xdr.o

So, there are no XDR functions in the default, C, runtime library.  I
wonder why the configure script thought there was.

> adria{root}-> configure --prefix=/usr/local
> creating cache ./config.cache
...
> checking for XDR library... -lnsl

The above line is the one that's relevant.  It looks like it worked this
time.

> checking XDR implementation... ok
...
> adria{root}-> make all
> 
> making `all' in directory /opt/util/netcdf/netcdf-2.4.2/src/port
...
> returning to directory /opt/util/netcdf/netcdf-2.4.2/src

Looks like you built the netCDF package OK.

> Yes, NrtCDF seems now to be correctly installed, but I still obtained
> the error message 
> ld: fatal: library -lnetcdf: not found
> when compiling a program using NetCDF library; then I tried to copy the
> file libnetcdf.a from the /usr/local/lib directory to the usr/lib
> directory, and recompiling the error massage is this one:
> Undefined                     first referenced
>  symbol                           in file
> xdr_enum                            /usr/lib/libnetcdf.a(array.o)
> xdr_float                           /usr/lib/libnetcdf.a(cdf.o)
> xdr_int                             /usr/lib/libnetcdf.a(array.o)
> xdr_vector                          /usr/lib/libnetcdf.a(sharray.o)
> xdr_u_long                          /usr/lib/libnetcdf.a(array.o)
> xdr_double                          /usr/lib/libnetcdf.a(cdf.o)
> xdr_long                            /usr/lib/libnetcdf.a(dim.o)
> xdr_opaque                          /usr/lib/libnetcdf.a(array.o)
> ld: fatal: Symbol referencing errors. No output written to ./oag
> *** Error code 1
> 
> What do you think?

I think that, when you build something that uses the netCDF library, you
need to specifiy the following on the link-line:

    -lnetcdf -lnsl

The first reference will obtain the netCDF libary (in /usr/lib) and the
seconds will obtain the requisite XDR functions (in /usr/lib/libnsl.x).

Please let me know if this helps.

--------
Steve Emmerson   <address@hidden>