Comments on building GrADS from source

[Don Hooper]

Most any NetCDF library from version 2 or 3 will work.  Version 3.6.0-p1
is remarkable as it is the first to work with files larger than 2 Gbytes
(not that GrADS can...).  The udunits API is stable, so the only reason
to prefer a version there is so certain bug fixes are included.  Anything
since 1.11 is probably OK.  The thing with HDF is, version 5 scared me as
there were massive changes.  I think the NetCDF API within HDF is still
version_2-style, so the problem with HDF5 is I think the library names
changed for the NetCDF interface, as I recall (it's been several years).

As far as I know, the readline API is stable, so I doubt version numbering
there is a big deal.   I suspect the OPeNDAP stuff is where, as previously
suggested, we will encounter the most issues.

-Hoop
> From owner-gradsusr at LIST.CINECA.IT  Thu Oct 27 19:41:15 2005
> From: Tom Pollard <tomp at EARTHLINK.NET>
>
> Hi Jennifer,
>
> Thanks for continuing to respond.
>
> You wrote:
> > You have hit the nail on the head. I, too, am unable to recompile
> > libgadods with libdap 3.5.2.
>
> It's not that mysterious why it doesn't work - the libdap API has
> apparently changed.  The gadods sources are trying to load header
> files from libdap that don't exist in libdap 3.5.2.
>
> > I will see if I can get the authors of those two libraries to make
> > their software play nice.
>
> Ok, but what version of libdap /does/ work with this libgadods?  What
> are the version numbers for the libraries currently distributed
> through supplibs?  I think it would be nice if this information was
> included in a README in the supplibs downloads, along with URLs for
> the original source distributions.
>
>
> > Other required libs depend on which features you want. Standard are
> > HDF, NetCDF, gd,
> > png, zlib, udunits, and readline.
>
> The list I have so far is the following:
> (These are the current version numbers.  I know that in some cases
> earlier versions must actually be required.)
>
> HDF 4.2r1
> gadods
> libdap 3.5.2
> libnc-dap 3.5.2
> netcdf 3.6.0-p1
> libwww 5.4.0
> rx 1.5
> udunits 1.12.4
> readline 5.0.005
> zlib 1.2.3
> gd 1.8.4
> libpng 1.2.8_2
> jpeg 6b
>
>
> Thanks,
>
> Tom
>
> >> Well, they're not all built yet.  It would help a lot if there were a
> >> list of just what additional libraries were required, and which
> >> versions you've been using.  For instance, it looks like the
> >> libgadods sources from ftp://grads.iges.org/grads/Supplibs/1.9/src/
> >> libgadods-src.tar.gz require an older version of libdap than the
> >> current release (libdap 3.5.2).