build/cmake/CheckFuncs_stub.c.in

#ifdef __STDC__
#include <limits.h>
#else
#include <assert.h>
#endif

int
main()
{
#if defined ${CHECK_STUB_FUNC_1} || defined ${CHECK_STUB_FUNC_2}
  return 0;
#else
this system have stub
  return 0;
#endif
}