When people compare C++ with Rust, quite often the only thing measured is performance where depending in your cxx compiler Rust (or rather, llvm) may lose sometimes.

What is often forgotten is the ecosystem.

To build a cxx project you'll probably need to learn CMake and ninja; maybe Buck or Bazel too. If your project has eternal dependencies you may have to figure out yourself how tl link everything together using whatever build tools the authors were using. For docs, you'll have to learn and use doxygen; for style formatting, something like a clang-format and its presets and options; for linting, something like clang-tidy or cpplint, etc. For testing, probably catch2 or one of similar frameworks. There's no universal concept of "package" or "version", you're completely on your own here; most open source cxx repos that have dependencies just add them as git submodules.

In Rust, cargo build to build, cargo doc to generate docs, cargo test to run tests, cargo publish to push your crate to the index; cargo fmt to format the code and cargo clippy to lint it - that's it, we're done.