From 25b29a1ade3ec81f13760124bf9635dc5dee5225 Mon Sep 17 00:00:00 2001
From: Jiacheng Guo <gjc@google.com>
Date: Wed, 22 Apr 2020 14:20:33 +0800
Subject: [PATCH] [platform] fix errno undefined on some libc (#4865)

---
 src/lib/platform/exit_code.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/lib/platform/exit_code.c b/src/lib/platform/exit_code.c
index acac14e2d..370b3b639 100644
--- a/src/lib/platform/exit_code.c
+++ b/src/lib/platform/exit_code.c
@@ -68,7 +68,11 @@ const char *otExitCodeToString(uint8_t aExitCode)
         break;
 
     case OT_EXIT_ERROR_ERRNO:
+#ifdef errno
         retval = strerror(errno);
+#else
+        retval = "ErrorNo";
+#endif
         break;
 
     default: