Rust

Location: examples/rust/

Rust reads environment variables at compile time with option_env!():

examples/rust/main.rs

fn main() {
    // VERSION will be set by the compiler during build via environment variable
    let version = option_env!("VERSION").unwrap_or("0.0.0");

    println!("Sample Rust Application");
    println!("Version: {}", version);
}

examples/rust/Makefile (excerpt)

build:
    VERSION=$$(versionator version); \
    VERSION="$$VERSION" rustc -o sample-app main.rs

Run it

$ cd examples/rust && just run
Getting version from versionator...
Building sample application with version: 0.0.16
Build completed: sample-app
./sample-app
Sample Rust Application
Version: 0.0.16

Source Code

• main.rs
• justfile
• Makefile
• Containerfile