autoupdate(1) on Linux
The text dafd93a455a6, as Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch) shipped it.
Update a configure.in to a newer Autoconf
Flags it lists
-
--debug -
--force -
--help -
--include -
--prepend-include -
--verbose -
--version -
-B -
-I -
-V -
-d -
-f -
-h -
-v