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[netCDF #YBC-350032]: two different version of netcdf

> Thanks Russ, I need the two different version, because 3.6.3 is functional
> with CMAQ 4.7.1 and IOAPI, but I got some trouble with newer netcdf
> versions. NEtcdf 4.1.1 is required by the brazilian CCATT-BRAMS  air
> quality model.  I need to work with both fully funcional models on my
> workstation. I just got an additional question, how could choose or switch
> the netcdf version I want to use?

OK, one way to switch between versions would be to create a symbolic link to
the root directory of the version you want to use, such as

  ln -s /usr/netcdf3 /usr/netcdf

or 

  ln -s /usr/netcdf4 /usr/netcdf

Now you could reference the include file and library to use on the compiler
command using something like

  gcc myprog.c -o myprog -I/usr/netcdf/include -L/usr/netcdf/lib -lnetcdf ...

and it would link to either the netCDF-3 or netCDF-4 library, depending on 
the value of the symbolic link /usr/netcdf at compile/link time.

--Russ

> address@hidden> wrote:
> 
> > > Good day, could you help me how to install two different versions of
> > netcdf
> > > in the same computer on linux plataform?
> > >
> > > Version 3.6.3 and 4.1.1
> >
> > you would have to install the different versions in different root
> > directories,
> > using different --prefix=... options when configuring the software as the
> > first
> > step in building it.
> >
> > For example, you might use
> >
> >   ./configure --prefix=/usr/netcdf3 other-options ...
> >
> > for the 3.6.3 version and
> >
> >   ./configure --prefix=/usr/netcdf4 other-options ...
> >
> > for the 4.1.1 version.
> >
> > But netCDF-4 is compatible with netCDF-3.  It supports the netCDF-3
> > formats for
> > both reading and writing, and includes all the netCDF-3 function calls in a
> > backward-compatible way.  So nay program that works with netCDF-3 should
> > work in
> > exactly the same way (except for some fixed bugs) using netCDF-4.  So you
> > should
> > not have to install two different versions of the library.
> >
> > Is there a reason you need both the old version and the new version that
> > compatibly
> > extends the old version?
> >
> > --Russ
> >
> > Russ Rew                                         UCAR Unidata Program
> > address@hidden                      http://www.unidata.ucar.edu
> >
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: YBC-350032
> > Department: Support netCDF
> > Priority: Normal
> > Status: Closed
> >
> >
> 
> 
> --
> *Alexander Rincón Pérez*
> Asistente de Investigaciòn
> Grupo de Investigación en Calidad del Aire
> Departamento de Ingeniería Química y Ambiental
> Universidad Nacional de Colombia
> Calle 44 45-67 Bloque B5, Piso 4
> 111321 Bogotá, Colombia
> Tel. +57 (1) 3165000 Exts. 10620,
> 
> 

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



Ticket Details
===================
Ticket ID: YBC-350032
Department: Support netCDF
Priority: Normal
Status: Closed