Regarding bug 389343. The problem lies in m4/acx_with_gssapi.m4. It seems the solution from bug 389347 would fix the problem. On not quite related note: would be nice, if the local implementation of bug 220040 would be fixed at the same time.
Does the recent change in status of bug 267619 mean the maintainer decided not to bother ?
please retry with 1.12.12-r12
Seems IMHO fixed.