Here's line 8135: $output =~ s/^((#.*)?\n)*\K/.POSIX:\n\n/; Ah. I'll get rid of the \K, once I remember/look up what it does :). (Jacob, if you have any advice, that would be great.)
A simple fix would be for Automake to require Perl 5.10; Nah, we shouldn't require a jump in Perl versions just for this. I was using the release tarball. Oh. Seems like that's another (not new, I guess) problem. help2man shouldn't be required to build from a tarball, as I understand it. Thanks, Karl