We converted our product (which I'd say is medium-sized - it's not a sprawling enterprise codebase but it's the work of a team over many years) to use Meson for

We converted our product (which I'd say is medium-sized - it's not a sprawling enterprise codebase but it's the work of a team over many years) to use Meson for its C / C++ components and I've been very pleased with it. It's pretty straightforward to understand, has good documentation and it's fast.