test

        std::string tok;

        while (iss >> tok) {

            if (tok == "--") break;  // start of NAME=value overrides

            // The inherited flags themselves, as GNU make passes them on: the

            // first word holds the single-letter ones without a dash ("ks"),

            // long options follow. Kbuild tells its re-invoked sub-make apart

            // by the inherited --no-print-directory.

            if (tok == "--no-print-directory") { no_print_directory = true; continue; }

            if (tok == "--silent" || tok == "--quiet") { silent = true; continue; }

            if (tok == "--keep-going") { keep_going = true; continue; }

            if (tok == "--dry-run" || tok == "--just-print") { dry_run = true; continue; }

            if (tok == "--always-make") { always_make = true; continue; }

            if (tok[0] != '-' && tok.find('=') == std::string::npos) {

                for (char c : tok) {

                    if (c == 's') silent = true;

                    else if (c == 'k') keep_going = true;

                    else if (c == 'n') dry_run = true;

                    else if (c == 'B') always_make = true;

                }

                continue;

            }

            if (tok.rfind("-j", 0) == 0) {

                if (tok.size() > 2) {

                    int j = std::atoi(tok.c_str() + 2);