Makeinfo required to build Automake 1.18

Hi!

I wanted to update the openSuse package for Automake to 1.18. But I get 
an error that makeinfo is not found. Past releases did no require 
makeinfo. Is this an oversight?

Kind regards,
Christoph


Build log:
> [   12s] + cd /home/abuild/rpmbuild/BUILD/automake-1.18-build
> [   12s] + /usr/bin/rm -rf /home/abuild/rpmbuild/BUILD/automake-1.18-build/BUILDROOT
> [   12s] + /usr/bin/mkdir -p /home/abuild/rpmbuild/BUILD/automake-1.18-build
> [   12s] + /usr/bin/mkdir /home/abuild/rpmbuild/BUILD/automake-1.18-build/BUILDROOT
> [   12s] + cd automake-1.18
> [   12s] + make install DESTDIR=/home/abuild/rpmbuild/BUILD/automake-1.18-build/BUILDROOT
> [   12s]   MAKEINFO doc/automake.info
> [   12s] /home/abuild/rpmbuild/BUILD/automake-1.18-build/automake-1.18/lib/missing: line 85: makeinfo: command not found
> [   12s] WARNING: 'makeinfo' is missing on your system.
> [   12s]          You should only need it if you modified a '.texi' file, or
> [   12s]          any other file indirectly affecting the aspect of the manual.
> [   12s]          You might want to install the Texinfo package:
> [   12s]          <https://www.gnu.org/software/texinfo/>
> [   12s]          The spurious makeinfo call might also be the consequence of
> [   12s]          using a buggy 'make' (AIX, DU, IRIX), in which case you might
> [   12s]          want to install GNU make:
> [   12s]          <https://www.gnu.org/software/make/>
> [   12s] make: *** [Makefile:2620: doc/automake.info] Error 127
> [   12s] error: Bad exit status from /var/tmp/rpm-tmp.VTu9bg (%install)



-- 
Most customers will not accept source code with compile errors in it.
                  Dan Saks, CppCon 2016 (https://youtu.be/D7Sd8A6_fYU)