[MINC-users] minc "make check" error -- not just a Snow Leopard problem

[EJ Nikelski]

Hi Peter and List,

   Peter, I think you might be onto something here.  The ldd
equivalent is called otool, and I've taken a look. The latest version
that I built with Claude links hdf5 and netcdf as dynamic -- all other
libs are statically linked into the executable (minc, volume_io).  In
the previous build, we had a very different configuration:
dynamic=(volume_io, minc2, hdf5), all the rest linked as static
(including netcdf). Apple seems to prefer linking dynamically, if it
can find a dynamic lib, else it grabs the static.

What would be the suggested optimal linking? hdf5 and netcdf dynamic
and all of the mincy libs linked statically with the executable.  BTW,
running "make check" with the latest library configuration seems to
given me a different error. Progress?

-jim


On Thu, Feb 24, 2011 at 2:45 PM, Peter Neelin <peter.neelin at gmail.com> wrote:
> On Thu, Feb 24, 2011 at 1:45 PM, EJ Nikelski <nikelski at bic.mni.mcgill.ca> wrote:
>
>>   So, given the thumbs down from Peter, I looked a bit closer. As it
>> turns out, on Snow Leopard, even after ncopts=0 prior to the call to
>> ncvarid(), ncvarid() receives the default ncopts() value of 3 (i.e.,
>> display error message and *do not return* to calling program. So the
>> error return handling code is never entered.  Funnily enough, as this
>> works correctly under Linux, this *does* appear to be a Snow Leopard
>> problem after all.
>
> I wondered if there might be some funkiness with dynamically-loaded
> libraries in which ncopts is not truly global. Minc changes the
> variable but this is not seen by ncvarid() loaded from a different
> library. Could minc be defining its own ncopts? (Anyone know much
> about the weirdnesses of building shared libraries in Mac OS X?)
>
> I am assuming that we are dealing with shared libraries here - is that
> true? Or is the binary statically linked? (Does Snow Leopard have an
> ldd?)
>
> Peter
> --
> Peter Neelin
> (peter.neelin at gmail.com)
> _______________________________________________
> MINC-users at bic.mni.mcgill.ca
> http://www.bic.mni.mcgill.ca/mailman/listinfo/minc-users
>



-- 
=================================
Jim Nikelski, Ph.D.
Postdoctoral Research Fellow
Bloomfield Centre for Research in Aging
Lady Davis Institute for Medical Research
Sir Mortimer B. Davis - Jewish General Hospital
McGill University