A common configuration framework is available for simulators that want
to use it. The common framework exists to remove a lot of duplication
-in configure.in and Makefile.in, and it also provides a foundation for
+in configure.ac and Makefile.in, and it also provides a foundation for
enhancing the simulators uniformly (e.g. the more they share in common
the easier a feature added to one is added to all).
-The configure.in of a simulator using the common framework should look like:
+The configure.ac of a simulator using the common framework should look like:
--- snip ---
dnl Process this file with autoconf to produce a configure script.