The test cases were failing on 64bit systems because the sizeof
code operated on the pointer size which is 8 and longer than the
size that was intended to be used for comparing it.
the dh_autoreconf application did not honor the sourcedirectory
option back then. Override the target and call autoreconf from
the right directory.
The libdbi development package is called libdbi0-dev. Use this name
for Debian stable but it should work for Ubuntu as well.
Holger Hans Peter Freyther