I ran referenced cross-build script using default answers to all questions except languages (C only) and repository (EasySW, I think).
Download went fine, and binutils begans to build. A few thousand lines later, it complained:
WARNING: `makeinfo' is missing on your system. [... rest of tirade snipped ...]
And stoped soon thereafter. (See attached cut/paste of last few lines of stdout/stderr.)
But makeinfo *is* installed. See the attached files for other pertinent info.