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Re: building GMT: warnings and unresolved references: xdr_enum

Javier,

>Date: Tue, 20 Oct 1998 13:48:27 +0100 (WET DST)
>From: Javier Maldonado Miranda <address@hidden>
>Organization: Instituto Andaluz de Ciencias de la Tierra
>To: address@hidden
>Subject: Re: 19981014: NetCDF Spanish installation problems 
>Keywords: 199810201147.FAA27173

In the above message, you wrote:

> I'm trying to install GMT3.0 (do you know it?).

We've heard of it.

> This program needs your program netcdf. But I have found that when
> I try to compile this program with your libraries it gives some
> problems. GMT3.0 has some years and I don't know if your librarie
> netcdf.h is a new one. I've tried to get some help from the people
> that designed GMT, but I haven't had any answer yet. Maybe you can
> help me. I'm going to send you a file that shows the problems that
> appear at compilation time (comp_problems) and the problematic files.
> 
> 
> Thank you again in advance.
> 
> 
> Javier.
> 
> P.S: by the way, can I remove the directory from where I installed your 
> program?.

I'm not sure what you're asking.  You may remove the "src/" subdirectory
after successfully installing the netCDF package.  Is that what you're
asking?

> Javier Maldonado Miranda
> 
> Instituto Andaluz de Ciencias de la Tierra
> Facultad de Ciencias
> Avda. Fuentenueva s/n
> 18022 Granada
> Spain
> 
> tlf: + 34 910 50 47 10
> FAX: + 34 958 24 33 84
> e-mail: address@hidden
> 
> *********************************************************************
> 
> /opt/SUNWspro/bin/cc -O -I/usr/local/netcdf-2.4.2/include -DLIBDIR=3D\"/usr=
> /local/gmt/lib\"   -DSI  -c pslib.c
> ar cvr libpsl.a pslib.o
> r - pslib.o
> ar: writing libpsl.a
> ranlib libpsl.a
> /opt/SUNWspro/bin/cc -c -O -I/usr/local/netcdf-2.4.2/include -DLIBDIR=3D\"/=
> usr/local/gmt/lib\"   -DSI  gmt_init.c
> /opt/SUNWspro/bin/cc -c -O -I/usr/local/netcdf-2.4.2/include -DLIBDIR=3D\"/=
> usr/local/gmt/lib\"   -DSI  gmt_map.c
> /opt/SUNWspro/bin/cc -c -O -I/usr/local/netcdf-2.4.2/include -DLIBDIR=3D\"/=
> usr/local/gmt/lib\"   -DSI  gmt_plot.c
> /opt/SUNWspro/bin/cc -c -O -I/usr/local/netcdf-2.4.2/include -DLIBDIR=3D\"/=
> usr/local/gmt/lib\"   -DSI  gmt_support.c
> "gmt_support.c", line 1381: warning: argument #4 is incompatible with proto=
> type:
>         prototype: pointer to function(pointer to const void, pointer to co=
> nst void) returning int : "/usr/include/stdlib.h", line 120
>         argument : pointer to function(pointer to int, pointer to int) retu=
> rning int
> "gmt_support.c", line 1525: warning: argument #4 is incompatible with proto=
> type:
>         prototype: pointer to function(pointer to const void, pointer to co=
> nst void) returning int : "/usr/include/stdlib.h", line 120
>         argument : pointer to function(pointer to double, pointer to double=
> ) returning int
...

Although I don't know GMT all that well, I suspect that all the warning
messages may be safely ignored because the C compiler is converting (for
example) pointers to integers into pointers to voids as required by the
netCDF 2 interface.  Only the GMT authors, however, would know for
sure.

> /opt/SUNWspro/bin/cc -O -I/usr/local/netcdf-2.4.2/include -DLIBDIR=3D\"/usr=
> /local/gmt/lib\"   -DSI  blockmean.o -L. -lpsl -lgmt -L/usr/local/netcdf-2.=
> 4.2/lib -lnetcdf  -lm -o ./blockmean
> 
> xdr_enum                            /usr/local/netcdf-2.4.2/lib/libnetcdf.a=
> (var.o)
> xdr_float                           /usr/local/netcdf-2.4.2/lib/libnetcdf.a=
> (cdf.o)
> xdr_int                             /usr/local/netcdf-2.4.2/lib/libnetcdf.a=
> (cdf.o)
> xdr_vector                          /usr/local/netcdf-2.4.2/lib/libnetcdf.a=
> (sharray.o)
> xdr_u_long                          /usr/local/netcdf-2.4.2/lib/libnetcdf.a=
> (cdf.o)
> xdr_double                          /usr/local/netcdf-2.4.2/lib/libnetcdf.a=
> (cdf.o)
> xdr_long                            /usr/local/netcdf-2.4.2/lib/libnetcdf.a=
> (dim.o)
> xdr_opaque                          /usr/local/netcdf-2.4.2/lib/libnetcdf.a=
> (cdf.o)
> ld: error fatal: Errores de referencia de s=EDmbolo. No se escribi=F3 salid=
> a en ./blockmean
> *** Error code 1
> make: Fatal error: Command failed for target `blockmean'

The above is due to not referencing the network support library on the
link-line (which is where the xdr_* functions reside).  Try adding a
"-lnsl" argument to the link-line.

--------
Steve Emmerson   <http://www.unidata.ucar.edu>