I needed to create this to prove to myself that it is possible (it is) so if this helps then I'm glad. As you might expect, a library wraps a bindings library which contains the C/C++/CMake project:
.
├── Cargo.lock
├── Cargo.toml
├── hello_lib
│ ├── Cargo.lock
│ ├── Cargo.toml
│ ├── libhello_bindings
│ │ ├── Cargo.lock
│ │ ├── Cargo.toml
│ │ ├── build.rs
│ │ ├── libhello
│ │ │ ├── CMakeLists.txt
│ │ │ ├── hello.c
│ │ │ └── proto.h
│ │ └── src
│ │ └── lib.rs
│ └── src
│ └── lib.rs
└── src
└── main.rs
the file build.rs is responsible for first executing the CMake build as well as generating the Rust FFI bindings which are used (and tested with cargo test)
in the hello_lib sub-crate.
- Cargo build scripts: https://web.mit.edu/rust-lang_v1.25/arch/amd64_ubuntu1404/share/doc/rust/html/cargo/reference/build-scripts.html
- cmake crate: https://docs.rs/cmake/latest/cmake/
- bindgen crate: https://crates.io/crates/bindgen/0.19.2
- bindgen documentation: https://rust-lang.github.io/rust-bindgen/
- Rust linkage: https://doc.rust-lang.org/reference/linkage.html