solana-program-library/themis/client_ristretto/build.rs

use std::process::Command;

fn main() {
    println!("cargo:warning=(not a warning) Building BPF themis program");
    Command::new("cargo")
        .arg("build-bpf")
        .status()
        .expect("Failed to build BPF themis program")
        .success();
}