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-rw-r--r--extmod/misc.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/extmod/misc.h b/extmod/misc.h
index 032fcba613..39bfd5ecb5 100644
--- a/extmod/misc.h
+++ b/extmod/misc.h
@@ -27,6 +27,13 @@
// This file contains cumulative declarations for extmod/ .
+#include <stddef.h>
#include "py/runtime.h"
MP_DECLARE_CONST_FUN_OBJ(mp_uos_dupterm_obj);
+
+#if MICROPY_PY_OS_DUPTERM
+void mp_uos_dupterm_tx_strn(const char *str, size_t len);
+#else
+#define mp_uos_dupterm_tx_strn(s, l)
+#endif