Comment by ablob
2 hours ago
You don't need a build system to share code.
You can share with header files and respective (shared) object files regardless of the build system you're using. Likewise you could just share the source. None of this needs a build system.
I was just being a bit sardonic because the C++ ecosystem is so fragmented that something like tokio couldn't really exist. It would be one of three executors in boost, abseil, or folly, and you would never see the kind of downstream ecosystem build on top of them because C++ shops are allergic to external dependencies.