book: document splitting a project into crates #763
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| in Rust ([Cargo is your only build system](../getting-started/4-cargo-executable.md)), simply add the crates as | ||
| dependencies of the top level binary crate in its Cargo.toml file. | ||
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| If your `main` function is in C++, you can only link one staticlib Rust crate into C++, otherwise linking |
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don't know if referring to the CXX section on linking between C++ and Rust is useful too? https://cxx.rs/build/other.html#linking-the-c-and-rust-together
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I think linking that would be too much information which isn't very relevant for the audience. Though that was helpful to realize extern crate is more appropriate than pub use
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depends on #598