Thinking like that leads down the same rabbit hole where autoconf/automake disappeared, only using bourne and m4 (!). Just in case you want to compile your code

Thinking like that leads down the same rabbit hole where autoconf/automake disappeared, only using bourne and m4 (!). Just in case you want to compile your code on a decade-old copy of HP-UX. Or I suppose some shiny new distro that is using zsh as /bin/sh.