+m4_ifdef([AC_TYPE_UINT8_T], [AC_TYPE_UINT8_T])
+m4_ifdef([AC_TYPE_UINT16_T], [AC_TYPE_UINT16_T])
+m4_ifdef([AC_TYPE_INT32_T], [AC_TYPE_INT32_T])
+m4_ifdef([AC_TYPE_UINT32_T], [AC_TYPE_UINT32_T])
+m4_ifdef([AC_TYPE_UINT64_T], [AC_TYPE_UINT64_T])
+m4_ifdef([AC_TYPE_SIZE_T], [AC_TYPE_SIZE_T])
+m4_ifdef([AC_HEADER_STDBOOL], [AC_HEADER_STDBOOL])
+