qt5base-lts/config.tests/common/c++11/c++11.cpp

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#if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__) || defined(__INTEL_CXX11_MODE__)
// Compiler claims to support C++11, trust it
#else
#  error "__cplusplus must be >= 201103L, or one of __GXX_EXPERIMENTAL_CXX0X__ or __INTEL_CXX11_MODE__ must be defined"
#endif

#include <utility>
#if defined(__clang__)
#  if __has_feature(cxx_generalized_initializers)
//   On Mac OS X, the libstdc++ headers don't include <initializer_list>
//   This #include here forces a failure unless we're using libc++
#    include <initializer_list>
#  endif
#endif

int main(int, char **) { return 0; }