Which component controls automake.info ?

[Jeffrey Walton]

I'm trying to update Autoconf and Automake on an old CentOS system.
The build is failing with:

  MAKEINFO doc/automake.info
/home/scripts/automake-1.15.1/lib/missing: line 81: makeinfo: command not found
WARNING: 'makeinfo' is missing on your system.
         You should only need it if you modified a '.texi' file, or
         any other file indirectly affecting the aspect of the manual.
         You might want to install the Texinfo package:
         <http://www.gnu.org/software/texinfo/>
         The spurious makeinfo call might also be the consequence of
         using a buggy 'make' (AIX, DU, IRIX), in which case you might
         want to install GNU make:
         <http://www.gnu.org/software/make/>
gmake: *** [Makefile:2518: doc/automake.info] Error 127

According to ./configure --help, I can disable it with
--disable-FEATURE. The problem I am having is, I don't know what the
feature's name is.

I tried the obvious ones, like --disable-docs and --disable--texi.

What is the feature name of the documentation so I can disable it?

(It also seems like a bad idea to fail a build for a feature I don't
want. Maybe it would be more prudent to print a warning message
instead of failing the primary task).