CHECK_CXX_SOURCE_COMPILES(
    "
    #include <memory>
    #include <algorithm>

    // Check the version language macro, but skip MSVC because
    // MSVC reports 199711 even in MSVC 2017.
    #if __cplusplus < 201402L && !defined(_MSC_VER) && !defined(__INTEL_COMPILER)
    #  error \"insufficient support for C++14\"
    #endif

    int main()
    {
      auto ptr = std::make_unique<int>(42);
      constexpr int max = std::max(0, 1);
      (void) ptr;
      (void) max;
      return 0;
    }
    "
    DEAL_II_HAVE_CXX14_FEATURES)