> so then my glib question: what is the purpose of this project?

The whole point is to massively simplify integrating those libraries into Zig projects by explicitly not having to deal with external build systems or separate C/C++ compiler toolchains.

> Is the grpc makefile no bueno?

Does it work out-of-the-box on Windows? That's usually the first question when encountering a Makefile (and just looking at the first lines of the Makefile, it doesn't, instead it needs to run inside mings: https://github.com/grpc/grpc/blob/a63b3a4d949a7057a0e5443e7a...).

With Zig you usually only need the Zig toolchain, which runs just fine in a regular Windows cmd.exe.