From c183233d07076821ac1b66cf158c65e853ed3060 Mon Sep 17 00:00:00 2001
From: zy <zhangyang@geedgenetworks.com>
Date: Tue, 5 Dec 2023 00:49:31 -0500
Subject: [PATCH] update readme

---
 README.md | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 506abc6..8db9f89 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,7 @@ changelog
 11.13 用户接口 cancel_all_watch -> cancel_watch, 每个进程互不干扰.
 11.28 完全重构,更新文档.
 12.1  一个编译问题,添加说明.
+12.5  编译问题补充
 ```
 
 ## 说明
@@ -60,7 +61,16 @@ make && insmod source/variable_monitor.ko
 
 编译问题:
 - 找不到 `libunwind.h` 头文件
-  - centos系 `sudo yum install libunwind-devel.x86_64`
+
+```shell
+# centos 系 确保启用了 epel 
+# sudo dnf install -y epel-release
+# sudo dnf makecache
+sudo yum install -y libunwind-devel.x86_64
+# debian 系
+sudo apt-get update && apt-get install -y elfutils
+sudo apt-get update && apt-get install -y libunwind8
+```
 
 ### 宏定义