> Even if someone uploads Rust bindings to C or C++ code to crates.io, as a library user you would still need to manually install the C/C++ library on your end,

> Even if someone uploads Rust bindings to C or C++ code to crates.io, as a library user you would still need to manually install the C/C++ library on your end, along with a compiler. Not if the library comes with your system. One can use this macro to generate a more "ergonomic" "safe libc" crate, that just introduces UB in safe Rust.