fn check_dependencies()

in aws-lc-fips-sys/builder/cmake_builder.rs [390:428]
37 lines of code
12 McCabe index (conditional complexity)

    fn check_dependencies(&self) -> Result<(), String> {
        let mut missing_dependency = false;
        if target_os() == "windows" && !test_ninja_command() {
            eprintln!("Missing dependency: Ninja is required for FIPS on Windows.");
            missing_dependency = true;
        }
        if !test_go_command() {
            eprintln!("Missing dependency: Go is required for FIPS.");
            missing_dependency = true;
        }
        if !test_perl_command() {
            eprintln!("Missing dependency: perl is required for FIPS.");
            missing_dependency = true;
        }
        if target_os() == "windows"
            && target_arch() == "x86_64"
            && !test_nasm_command()
            && !is_no_asm()
        {
            eprintln!(
                "Consider setting `AWS_LC_FIPS_SYS_NO_ASM` in the environment for development builds.\
            See User Guide about the limitations: https://aws.github.io/aws-lc-rs/index.html"
            );
            eprintln!("Missing dependency: nasm is required for FIPS.");
            missing_dependency = true;
        }
        if let Some(cmake_cmd) = find_cmake_command() {
            env::set_var("CMAKE", cmake_cmd);
        } else {
            eprintln!("Missing dependency: cmake");
            missing_dependency = true;
        }

        if missing_dependency {
            return Err("Required build dependency is missing. Halting build.".to_owned());
        }

        Ok(())
    }