>>>>> "Karl" == Karl M Hegbloom <karlheg(a)hegbloom.net&gt; writes: Karl> By the way, our "configure.in" is broken with autoconf 2.50, but of Karl> course still works with autoconf 2.13. (In Debian "sid" right now is Karl> both autoconf (2.50) and autoconf2.13.) Here is the error: autoconf-2.50 is a major change from 2.13. Upgrading _properly_ will be a lot of work. In particular, a lot of the redefinitions in configure.in are to change the behavior of configure in a way that's no longer necessary in the new autoconf. New macros introduced in autoconf 2.50 should also be used.