+//\r
+// We already have "no-ui" in out Configure invocation.\r
+// but the code still fails to compile.\r
+// Ref: https://github.com/openssl/openssl/issues/8904\r
+//\r
+// This is defined in CRT library(stdio.h).\r
+//\r
+#ifndef BUFSIZ\r
+#define BUFSIZ 8192\r
+#endif\r
+\r