fn verify_bindgen()

in aws-lc-fips-sys/builder/main.rs [640:679]

• 40 lines of code
• 11 McCabe index (conditional complexity)

fn verify_bindgen() -> Result<(), String> {
    let result = execute_command("bindgen".as_ref(), &["--version".as_ref()]);
    if !result.status {
        if !result.executed {
            eprintln!(
                "Consider installing the bindgen-cli: \
            `cargo install --force --locked bindgen-cli`\
            \n\
            See our User Guide for more information about bindgen:\
            https://aws.github.io/aws-lc-rs/index.html"
            );
        }
        return Err("External bindgen command failed.".to_string());
    }
    let mut major_version: u32 = 0;
    let mut minor_version: u32 = 0;
    let mut patch_version: u32 = 0;
    let bindgen_version = result.stdout.split(' ').nth(1);
    if let Some(version) = bindgen_version {
        let version_parts: Vec<&str> = version.trim().split('.').collect();
        if version_parts.len() == 3 {
            major_version = version_parts[0].parse::<u32>().unwrap_or(0);
            minor_version = version_parts[1].parse::<u32>().unwrap_or(0);
            patch_version = version_parts[2].parse::<u32>().unwrap_or(0);
        }
    }
    // We currently expect to support all bindgen versions >= 0.69.3
    if major_version == 0 && (minor_version < 69 || (minor_version == 69 && patch_version < 3)) {
        eprintln!(
            "bindgen-cli was used. Detected version was: \
            {major_version}.{minor_version}.{patch_version} \n\
        If this is not the latest version, consider upgrading : \
        `cargo install --force --locked bindgen-cli`\
        \n\
        See our User Guide for more information about bindgen:\
        https://aws.github.io/aws-lc-rs/index.html"
        );
    }
    Ok(())
}