Installing autoconf, automake and aclocal under Mountain Lion

Mountain Lion's XCode doesn't include autotools.

Jean-Sebastian Delfino hosts a script that works perfectly under Mountain Lion 10.8.5:

http://jsdelfino.blogspot.com/2012/08/autoconf-and-automake-on-mac-os-x.html

After executing the script you have to make sure that ~/devtools/autotools-bin/bin (or equivalent) appears in your path.