* WARNING: Future backward-incompatibilities!
+ - Starting from either the next minor version (1.12.2) or the next major
+ version (1.13), Automake will start warning if 'configure.in' is used
+ instead of 'configure.ac' as the Autoconf input. Future versions of
+ Automake will drop support for 'configure.in' altogether.
+
- Autoconf 2.65 or later will be required by the next major Automake
version (1.13). Until now, Automake has required Autoconf version
2.62 or later.