cmake US_HAVE_STD_HASH_STRUCT examples

MITK/MITK Modules/CppMicroServices/CMakeLists.txt :269 

CHECK_CXX_SOURCE_COMPILES("#include <unordered_map>\nstruct A { friend struct std::hash<int>; }; int main() { return 0; }"
                              US_HAVE_STD_HASH_STRUCT)

MITK/MITK Modules/CppMicroServices/CMakeLists.txt :289 

CHECK_CXX_SOURCE_COMPILES("#include <tr1/unordered_map>\nstruct A { friend struct std::hash<int>; }; int main() { return 0; }"
                              US_HAVE_STD_HASH_STRUCT)