Tool for generating GNU Standards-compliant Makefiles Formula was removed
Last versions were

Revision: 1

automake@1.12 requires the following formula to be installed:
autoconf 2.69 Automatic configure script builder

Recent formula history

FX Coudert automake@1.12: remove
ilovezfs Use “squiggly” heredocs.
ilovezfs automake@1.12: swap GNU url and mirror.
Mike McQuaid automake@1.12: don't make keg-only.
Mike McQuaid automake@1.12: import from homebrew/versions.

Formula code at GitHub