Hello,
You are building libidn2 from a git checkout. It is a little more
complicated than running autoreconf, so the maintainer put a script
named "bootstrap". You should run that one. It will fetch many things
from the internet.
However, it looks like you want to compile a released version
Please add an option to fetch missing Autotools pieces online. Below,
there is no reason to torture me for these things. Autotools should be
able to find everything it needs on its own. If it can't find them
locally, then go get them from the network.
$ git clone
