The automatic autoreconf in the above patch is generally best, but if you baulk at that I can confim that the attached more conservative dh-autotools-dev patch also fixes the ftbfs for arm64.
Wookey -- Principal hats: Linaro, Emdebian, Wookware, Balloonboard, ARM http://wookware.org/
diff -Nru libasyncns-0.8/debian/control libasyncns-0.8/debian/control diff -Nru libasyncns-0.8/debian/rules libasyncns-0.8/debian/rules --- libasyncns-0.8/debian/rules 2011-07-30 20:23:25.000000000 +0100 +++ libasyncns-0.8/debian/rules 2013-10-08 09:53:00.000000000 +0100 @@ -7,7 +7,7 @@ export LDFLAGS=-Wl,--as-needed %: - dh $@ + dh $@ --with autotools-dev override_dh_auto_configure: dh_auto_configure -- --docdir=/usr/share/doc/libasyncns-dev
