You should do "dpkg-source -x xyz_1.2.dsc". This command will unpack xyz-1.2.orig.tar.gz
and apply xyz_1.2.diff.gz. Only then you should apply your patch and then do
'dpkg-buildpackage'.
Thanks for reply.It works. Thanks again.
-- Iyi calismalar.Basarilar... Semih Gokalp Istanbul/Turkiye