Re: Compilation error in ls-hdf5.cc

[dbateman]

Jaroslav Hajek-2 wrote:
> 
> On Tue, Jan 20, 2009 at 12:54 PM, Ivan Sutoris <address@hidden>
> wrote:
>> Hi
>>
>> I have been trying to compile development version of Octave in
>> openSUSE 11.1. (after some problems in Cygwin, I decided to try real
>> Linux distro :) ) The compilation throws error in file /src/ls-hdf5.cc
>> (errors attached as text file), however HDF5 should be installed
>> correctly (it is detected with configure script). I got HDF from
>> distro's repositories [1], which provide version 1.8.1. That
>> (according to HDF website) is quite recent, with some changes when
>> compared to 1.6.x releases. Now,  I don't use (and I am not familiar
>> with) HDF, so I just configured and compiled octave without it, but I
>> guess this could be a problem for others (if the problem is indeed
>> incompatibility with new version), so I thought I should bring it to
>> attention.
>>
>> Regards
>> Ivan Sutoris
>>
>> [1]
>> http://rpmfind.net/linux/RPM/opensuse/11.1/i586/hdf5-devel-1.8.1-29.7.i586.html
>>
> 
> This is a known problem. Octave will only work with hdf 1.6, because
> no one has so far cared to update the relevant code to the newer
> version.
> 
> 
> -- 
> RNDr. Jaroslav Hajek
> computing expert
> Aeronautical Research and Test Institute (VZLU)
> Prague, Czech Republic
> url: www.highegg.matfyz.cz
> 
> 

It should be relatively simple to fix the code to support both 1.6 and 1.8
versions of HDF5. The only API changes that affect Octave as far as I can
see are



> Functions with Changed Syntax
> The following function syntaxes have changed; the affected return values
> and parameter are noted as underscored red text.
> 
> C functions:
> H5Fget_obj_count
>     ssize_t H5Fget_obj_count( hid_t file_id, unsigned int types )
> 
> H5Fget_obj_ids
>     ssize_t H5Fget_obj_ids( hid_t file_id, unsigned int types,
>             size_t max_objs, hid_t *obj_id_list ) 
> 

so a little bit of autoconf magic and some ifdef's in the code should fix
the issue. I'll see if I can supply a patch.

D.
-- 
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