getopt.add_option('m', "module", module_type, GetOpt::OPTIONAL_ARG).bind_seen_count(as_module).set_help("Compile as unspecialized module");
getopt.add_option('t', "target-version", target_version, GetOpt::REQUIRED_ARG).set_help("Specify target GLSL version", "VER");
getopt.add_option('o', "out-file", out_filename, GetOpt::REQUIRED_ARG).set_help("Write output to file instead of stdout", "FILE");
getopt.add_option('m', "module", module_type, GetOpt::OPTIONAL_ARG).bind_seen_count(as_module).set_help("Compile as unspecialized module");
getopt.add_option('t', "target-version", target_version, GetOpt::REQUIRED_ARG).set_help("Specify target GLSL version", "VER");
getopt.add_option('o', "out-file", out_filename, GetOpt::REQUIRED_ARG).set_help("Write output to file instead of stdout", "FILE");