[Koha] Problem installing Yaz on AMD64

[Paul Yachnes]

I am attempting to install Koha on Ubuntu on an AMD64 machine.

At http://wiki.koha.org/doku.php?id=ubuntu_amd64, "Installing Koha on 
Ubuntu amd64," they say:

"..... if you’re planning on using the Zebra plugin then you should 
download the Yaz source tarball instead, and compile the packages 
yourself. (This is because installing Net::Z3950::ZOOM will fail because 
the version of Yaz is too old.)"

Having found this to be the case I have folllowed their instructions 
thus far:

"* Download the newest source tarball from ftp.indexdata.dk/pub/yaz and 
untar it.
* Install fakeroot and debhelper with apt-get
* cd into the untarred directory, and run “dpkg-buildpackage -rfakeroot -b”
* It will probably give you a list of dependent packages that are 
missing. Install them with apt-get, and repeat the last step."

I do not get a list of missing dependent packages. What I get at this 
point is:

dpkg-buildpackage: set CPPFLAGS to default value:
dpkg-buildpackage: set CFLAGS to default value: -g -O2
dpkg-buildpackage: set CXXFLAGS to default value: -g -O2
dpkg-buildpackage: set FFLAGS to default value: -g -O2
dpkg-buildpackage: set LDFLAGS to default value: -Wl,-Bsymbolic-functions
tail: cannot open `debian/changelog' for reading: No such file or directory
dpkg-buildpackage: failure: tail of debian/changelog gave error exit 
status 1

and I can go no further. Does anyone know what I need to do?

Paul