strange message while installing tsa-4.2.4.tar.gz package

[Sergei Steshenko]

Hello,

while installing tsa-4.2.4.tar.gz package I've noticed the following strange 
messages:


make: /usr/local/MATLAB/R2010b/bin/mexext: Command not found
make: Entering directory 
`/mnt/sdb8/sergei/AFSWD_debug/build/octave_forge_bundle/oct-eXZ1Jq/tsa/src'
make: /usr/local/MATLAB/R2010b/bin/mexext: Command not found
make: Nothing to be done for `mex4o'.
...
/home/qemu/octave-3.6.1/tsa-4.2.4/i686-pc-linux-gnu-api-v48+/covm_mex.mex: 
failed to load: 
/home/qemu/octave-3.6.1/tsa-4.2.4/i686-pc-linux-gnu-api-v48+/covm_mex.mex: 
wrong ELF class: ELFCLASS64
.

Any idea what this all can be ?

I.e., for example, why Matlab is called during Octave package installation ?

What is that "ELFCLASS64" ? My machine is a 32 bit one.

Thanks,
  Sergei.