update set_config_header api

1 files changed, 5 insertions, 0 deletions

diff --git a/manual.md b/manual.md
index 1ae28a1c..f2200ef7 100644
--- a/manual.md
+++ b/manual.md
@@ -1381,6 +1381,11 @@ target("test")
     add_options("wchar")
 ```
 
+2.1.8 之后版本，支持针对每个局部配置文件，单独设置版本号，优先于全局的[set_version](#set_version)，例如：
+
+```lua
+    set_config_header("$(buildir)/config.h", {prefix = "TB_CONFIG", version = "2.1.8", build = "%Y%m%d%H%M"})
+```
 
 ##### target:set_pcheader