aclocal and ./configure

If you ever have a ./configure file, you need to be sure that you have automake and autoconf installed; however, that does not mean that it will work. Today I received this error:

aclocal.m4:14: error: this file was generated for autoconf 2.61.
You have another version of autoconf.  If you want to use that,
you should regenerate the build system entirely.
aclocal.m4:14: the top level

The solution is to do the following to rebuild the autoconf dependencies:

autoreconf && ./configure