import RT-Thread@9217865c without bsp, libcpu and components/net

components/libc/posix/io/stdio/libc.h

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2017/10/15     bernard      the first version
+ */
+
+#ifndef __RTT_LIBC_H__
+#define __RTT_LIBC_H__
+
+#include <rtconfig.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int libc_system_init(void);
+#ifdef RT_USING_POSIX_STDIO
+int libc_stdio_get_console(void);
+int libc_stdio_set_console(const char* device_name, int mode);
+#endif /* RT_USING_POSIX_STDIO */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif