[pkg-fso-maint] new debian/rules breaks cross compile?

[arne anka]

i used
fakeroot dpkg-buildpackage -b -aarmel
before successfully to build armel packages on my amd64 box.
today i encountered a strange debian/rules file in cellwriter -- instead  
of the usuall and easily adapted script it's now only a listing of global  
includes (how is one supposed to make changes for a specific  
package/build?):

#!/usr/bin/make -f

include /usr/share/cdbs/1/rules/debhelper.mk
include /usr/share/cdbs/1/class/autotools.mk
include /usr/share/cdbs/1/class/gnome.mk

# Only install the TODO into the package directory
DEB_INSTALL_DOCS_ALL := TODO

while this is weird enough, the created binary is not any longer armel but  
amd64!
any hints how to make at least cross compiling work again?