logtool fails to cross build from source, because it does not pass
--host to ./configure. The easiest way of fixing that is using
dh_auto_configure. Even then, it configures again during dh_auto_build
via the upstream makefile as it treats a missing config.cache as a
reason to rerun ./configure without flags. Unfortunately, ./configure
does not create a config.cache. The attached patch makes logtool cross
buildable. Please consider applying it.

Helmut