Also, does it also work with build systems like CMake flawlessly? (I know that you can use Zig as a build system, but I would still want to leverage the ecosystem of C++ libraries compatible with CMake.)
It should be possible to use Zig as clang replacement in traditional C/C++ build systems, just by replacing the compiler invocation with 'zig cc', although I heard this sometimes causes subtle problems because of the space between 'zig' and 'cc', so it probably needs to be wrapped with a script file or maybe alias.
It wraps clang, so it supports whatever clang supports, C++ included.
> Also, does it also work with build systems like CMake flawlessly?
I haven't personally tried it, but I'd expect that if all else fails you could add a step in build.zig to run CMake and then link against whatever library you just built.