fn check_dependencies()

in aws-lc-sys/builder/cmake_builder.rs [389:424]
34 lines of code
13 McCabe index (conditional complexity)

    fn check_dependencies(&self) -> Result<(), String> {
        let mut missing_dependency = false;
        if target_os() == "windows" && target_arch() == "x86_64" {
            if is_no_asm() && Some(true) == allow_prebuilt_nasm() {
                eprintln!(
                    "Build environment has both `AWS_LC_SYS_PREBUILT_NASM` and `AWS_LC_SYS_NO_ASM` set.\
                Please remove one of these environment variables.
                See User Guide: https://aws.github.io/aws-lc-rs/index.html"
                );
            }
            if !is_no_asm() && !test_nasm_command() && !use_prebuilt_nasm() {
                eprintln!(
                    "Consider installing NASM or setting `AWS_LC_SYS_PREBUILT_NASM` in the build environment.\
                See User Guide: https://aws.github.io/aws-lc-rs/index.html"
                );
                eprintln!("Missing dependency: nasm");
                missing_dependency = true;
            }
            if target_arch() == "aarch64" && target_env() == "msvc" && !test_clang_cl_command() {
                eprintln!("Missing dependency: clang-cl");
                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(())
    }