Rust Programming Cookbook

How to do it...

Let's create some bindings in just a few steps:

1. Open rust-tinyexpr/Cargo.toml and add the appropriate build dependencies:

[build-dependencies]bindgen = "0.49"

2. Create a new rust-tinyexpr/build.rs file and add the following content to create a custom build of the C library:

use std::env;use std::env::var;use std::path::PathBuf;const HEADER_FILE_NAME: &'static str = "../tinyexpr/tinyexpr.h";fn main() {    let project_dir = var("CARGO_MANIFEST_DIR").unwrap();    println!("cargo:rustc-link-search={}/../tinyexpr/",      project_dir);    println!("cargo:rustc-link-lib=static=tinyexpr");    if cfg!(target_env = "msvc") {        println!("cargo:rustc-link-         lib=static=legacy_stdio_definitions");    }        let bindings = bindgen::Builder::default() .header(HEADER_FILE_NAME) ...