| # Command Line Usage |
| |
| Install the `bindgen` executable with `cargo`: |
| |
| ```bash |
| $ cargo install bindgen |
| ``` |
| |
| The `bindgen` executable is installed to `~/.cargo/bin`. You have to add that |
| directory to your `$PATH` to use `bindgen`. |
| |
| `bindgen` takes the path to an input C or C++ header file, and optionally an |
| output file path for the generated bindings. If the output file path is not |
| supplied, the bindings are printed to `stdout`. |
| |
| If we wanted to generated Rust FFI bindings from a C header named `input.h` and |
| put them in the `bindings.rs` file, we would invoke `bindgen` like this: |
| |
| ```bash |
| $ bindgen input.h -o bindings.rs |
| ``` |
| |
| For more details, pass the `--help` flag: |
| |
| ```bash |
| $ bindgen --help |
| ``` |
