porting arapck code to octave

[David Bateman]

David Bateman wrote:
> David Bateman wrote:
>> John W. Eaton wrote:
>>> | Why it doesn't work for you is a good question. Maybe there's a 
>>> buffer
>>> | overrun that in my case doesn't do any damage by chance? (Just a wild
>>> | guess).
>>>
>>> Both programs seem to work correctly for me.  I also thought it might
>>> be a buffer overrun that was only showing up on some systems (32- vs
>>> 64-bit pointers, for example) so I tried it on 32- and 64-bit sytems
>>> and it worked on both.  I also tried running it with valgrind and
>>> there were no complaints for the call to dssimp.  I'm using Octave
>>> 3.0.1 (64-bit system) and Octave 3.0.0 (32-bit system) on a Debian
>>> system with arpack from the Debian package.
>>>   
>> ok, rinse and repeat...
>>
>> I retried with various compilation and linking options and firstly it 
>> appears that if I link to the static library everything works fine. 
>> However if I have FFLAGS of "-fPIC -O2" and link arpack with
>>
>> g++ -shared -Wl,-soname -Wl,libarpack.so -o libarpack.so  SRC/*.o 
>> UTIL/*.o -llapack -lblas
>>
>> as I would have thought was necessary, I have problems.. In fact I 
>> can't seem to find any shared library version that I build that does 
>> work....
>>
>> D.
>>
>
> Ok, it seems that if I use the version of arpack from
>
> http://mathema.tician.de/dl/software/arpack-autotools
>
> that contains a few bug fixes and a build with libtool then I can get 
> eigs to work correctly... The reason I was building ARPACK myself in 
> the first place was that the version that seems to bee distributed 
> with debian isn't built with gfortran  with the version in testing.. 
> Will this still be the case in future versions of arpack on debian?
>
> Regards
> David
>
As this builds correctly and passes make check with the libtool version 
of the shared library, I pushed my patch to savannah..

D.


-- 
David Bateman                                dbateman at dbateman.org
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