int main(int argc, char **argv) {
char *option[] = { "test.exe", //it doesn't have meaning, just dummy
                   "--gtest_output=xml:filename" };
int argc1 = 2;
  ::testing::InitGoogleTest(&argc1, option);
  return RUN_ALL_TESTS();
}

::testing::GTEST_FLAG(output) = "xml:filename";