std::cout << "simdjson v" << STRINGIFY(SIMDJSON_VERSION) << " is running the " << simdjson::active_implementation->name() << " implementation." << std::endl;

const char *expected_implementation = nullptr;

if (argc > 1) {

expected_implementation = argv[1];

} else {

expected_implementation = getenv("SIMDJSON_FORCE_IMPLEMENTATION");

if (!expected_implementation) {

std::cout << "No expected implementation argument and SIMDJSON_FORCE_IMPLEMENTATION is not set, success by default!" << std::endl;

return EXIT_SUCCESS;

}

std::cout << "No expected implementation argument, but SIMDJSON_FORCE_IMPLEMENTATION is set to " << expected_implementation << ", so we'll check for that." << std::endl;

}

if (strcmp(expected_implementation, simdjson::active_implementation->name().c_str())) {

std::cerr << "Wrong implementation! Expected " << expected_implementation << "." << std::endl;

return EXIT_FAILURE;

}

return EXIT_SUCCESS;

}