Ubuntu下最简单的Cmake编译多个C和C++工程的

  const char features[] = {“\n“
“C_FEATURE:“
#if （__GNUC__ * 100 + __GNUC_MINOR__） >= 404
“1“
#else
“0“
#endif
“c_function_prototypes\n“
“C_FEATURE:“
#if （__GNUC__ * 100 + __GNUC_MINOR__） >= 404 && defined（__STDC_VERSION__） && __STDC_VERSION__ >= 199901L
“1“
#else
“0“
#endif
“c_restrict\n“
“C_FEATURE:“
#if （__GNUC__ * 100 + __GNUC_MINOR__） >= 406 && defined（__STDC_VERSION__） && __STDC_VERSION__ >= 201000L
“1“
#else
“0“
#endif
“c_static_assert\n“
“C_FEATURE:“
#if （__GNUC__ * 100 + __GNUC_MINOR__） >= 404 && defined（__STDC_VERSION__） && __STDC_VERSION__ >= 199901L
“1“
#else
“0“
#endif
“c_variadic_macros\n“

};

int main（int argc char** argv） { （void）argv; return features[argc]; }