From e4beb9c0f7d72786b9ace6830bf7b3a9e75a9637 Mon Sep 17 00:00:00 2001
From: bernard <bernard.xiong@rt-thread.com>
Date: Wed, 18 Oct 2017 17:27:48 +0800
Subject: [PATCH] [Kernel] Add more setting checking for RT_USING_POSIX.

---
 include/rtdebug.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/rtdebug.h b/include/rtdebug.h
index 9cd6c5e0e6..e600320361 100644
--- a/include/rtdebug.h
+++ b/include/rtdebug.h
@@ -28,6 +28,15 @@
 #if !defined(RT_USING_DFS) || !defined(RT_USING_DFS_DEVFS)
 #error "POSIX poll/select, stdin need file system(RT_USING_DFS) and device file system(RT_USING_DFS_DEVFS)"
 #endif
+
+#if defined(RT_USING_LWIP) && !defined(RT_USING_DFS_NET)
+#error "POSIX poll/select, stdin need file BSD socket API(RT_USING_DFS_NET)"
+#endif
+
+#if !defined(RT_USING_LIBC)
+#error "POSIX layer need standard C library(RT_USING_LIBC)"
+#endif
+
 #endif
 
 #ifdef RT_USING_POSIX_TERMIOS
-- 
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