Zproject is not a build system. It's more like package.json esque thing for C. We used it on a past and it was capable to generate auto tools (or c make) build

Zproject is not a build system. It's more like package.json esque thing for C. We used it on a past and it was capable to generate auto tools (or c make) build recipes, Debian or rpm packaging, ffi bindings and more. But you're right it got almost zero traction outside of zeromq.