建立工程，成功创建两个虚拟串口

source/OpenAMP/libmetal/lib/include/metal/errno.h

@@ -0,0 +1,24 @@
+/*
+ * * Copyright (c) 2019 STMicrolectonics , Xilinx Inc. and Contributors. All rights reserved.
+ * *
+ * * SPDX-License-Identifier: BSD-3-Clause
+ * */
+
+/*
+ * * @file      metal/errno.h
+ * * @brief     error specific primitives for libmetal.
+ * */
+
+#ifndef __METAL_ERRNO__H__
+#define __METAL_ERRNO__H__
+
+#if defined (__CC_ARM)
+# include <metal/compiler/mdk-arm/errno.h>
+#elif defined (__ICCARM__)
+# include <metal/compiler/iar/errno.h>
+#else
+#include <errno.h>
+#endif
+
+#endif /* __METAL_ERRNO__H__ */
+