https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88141
--- Comment #5 from Joshua Morrison <jmm4077 at rit dot edu> --- It seems as though I misconfigured the repository when I pulled it via Git. The line endings were being switched to CRLF instead of just LF, and that in turn caused makeinfo to give the errors I was getting during the build. Sorry about that, it was just a mistake on my part when pulling the repo.