I do have an experimental set of meson.build files thatthat I quickly wrote and that enable me to build freetype on GNU/Linux
It may work on Windows as well, but I haven't tested it. And there's surely lots of other features of the current build system that are still lacking in this experimental port.
If anyone would like to take a look, I can publish it in my own git repo for a review and surely some further improvements.
cheers,
felipesanches