#ifndef R_GCC_REQUIRED
#define R_GCC_REQUIRED

#include <rlib/sys/os.hpp>
#ifndef GCC
#define GCC 9876
#else
#error macro 'GCC' is already defined.
#endif
#if __COMPILER_ID__ != 9876
#error Gcc is required but not detected.
#endif

#undef GCC

#endif