In Xcode 4.5, what is “Compiler Default” for “C++ Standard Library” and “C++ Language Dialect”?

Question

What is the value of \"Compiler Default\" for \"C++ Standard Library\" and \"C++ Language Dialect\" in Xcode 4.5?

My guess is libstdc++ and GNU++98, but it would be

Answer 1

Here is the best way to find out:

 #include <iostream>

int main()
{
#ifdef _LIBCPP_VERSION
    std::cout << "Using libc++\n";
#else
    std::cout << "Using libstdc++\n";
#endif
#ifdef __GXX_EXPERIMENTAL_CXX0X__
#if __cplusplus == 1
    std::cout << "Language mode = gnu++11\n";
#else
    std::cout << "Language mode = c++11\n";
#endif
#else
#if __cplusplus == 1
    std::cout << "Language mode = gnu++98\n";
#else
    std::cout << "Language mode = c++98\n";
#endif
#endif
}

Just build a test project with the compiler defaults and run it.