Re: need test run on Mac

[John W. Eaton]

On 02/28/2014 10:10 AM, John W. Eaton wrote:
> On 02/27/2014 10:25 PM, Dmitri A. Sergatskov wrote:
>
> > I usually compile against the reference blas and then use LD_PRELOAD
> > trick to overload shared library symbols.
>
> If you use LD_PRELOAD, then I would expect it to fail with any BLAS
> because the default XERBLA will be loaded before Octave has a chance
> to load its own version of that function.
>
> Here is what I see on my system:
>
>    $ ldd /usr/bin/octave | grep blas
>            libblas.so.3 => /usr/lib/libblas.so.3 (0x00007fd78ceb5000)
>    coredump:2901> LD_PRELOAD=/usr/lib/libblas.so.3 /usr/bin/octave -qf
>    octave:1> foo
>     ** On entry to barf   parameter number -7 had an illegal value
>
>    $
>
> I.e., Octave exits immediately because that's what the default XERBLA
> does.
>
> Hmm, is there some way we can prevent this from happening and still
> have Octave link correctly?  Currently, xerbla is in liboctave.  I'll
> see what happens if we link it directly with the main Octave
> executable instead of putting it in a separate shared library.

Could you please try the attached change and see whether it fixes the 
problem for you?

Thanks,

jwe

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