From c7aa6f0619318a3730fc4f4689d2cd2e72efed52 Mon Sep 17 00:00:00 2001
From: mysterywolf <920369182@qq.com>
Date: Fri, 2 Oct 2020 12:00:52 +0800
Subject: [fix bug] #3902

---
 components/libc/compilers/common/readme.md | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/readme.md b/components/libc/compilers/common/readme.md
index cb91d95f45..0cd56272ff 100644
--- a/components/libc/compilers/common/readme.md
+++ b/components/libc/compilers/common/readme.md
@@ -1 +1,10 @@
-This folder is "common" for armlibc newlibc and dlib. It's not "common" for minilibc.
\ No newline at end of file
+# Attention : 
+
+1. This folder is "common" for armlibc newlibc and dlib. It's not "common" for minilibc.
+
+2. If you want to add new .c files, please do not forget to fix SConscript file too. eg:
+
+```python
+if GetDepend('RT_USING_POSIX') == False:
+        SrcRemove(src, ['unistd.c'])
+```
\ No newline at end of file
-- 
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