diff --git a/configure b/configure
index ea85df38..f710546c 100755
--- a/configure
+++ b/configure
@@ -51,6 +51,9 @@ unix98_flag=""
 # mmap
 mmap_flag=""
 
+# function tracing
+func_flag=""
+
 
 #Functions
 set_melang_default_paths() {
@@ -108,6 +111,7 @@ get_params() {
             echo -e "\t--olevel=O|O1|O2|O3"
             echo -e "\t--select=[all|module1,module2,...]"
             echo -e "\t--disable-macro=[macro1,macro2,...]"
+            echo -e "\t--func"
             exit 0
         fi
         param_prefix=`echo $param|cut -d '=' -f 1`
@@ -124,6 +128,8 @@ get_params() {
             wasm=1
         elif [ $param_prefix == "--debug" ]; then
             debug=1
+        elif [ $param_prefix == "--func" ]; then
+            func_flag='-DMLN_FUNC_FLAG'
         elif [ $param_prefix == "--select" ]; then
             select_files=$param_suffix
         elif [ $param_prefix == "--disable-macro" ]; then
@@ -441,7 +447,7 @@ generate_Makefile() {
     if [ $wasm -eq 1 ]; then
         echo -e "FLAGS\t\t= -Iinclude -c $debug $olevel $llvm_flag -s -mmutable-globals -mnontrapping-fptoint -msign-ext -Wemcc" >> Makefile
     else
-        echo -e "FLAGS\t\t= -Iinclude -c -Wall $debug -Werror $olevel -fPIC $event_flag $sendfile_flag $writev_flag $unix98_flag $mmap_flag" >> Makefile
+        echo -e "FLAGS\t\t= -Iinclude -c -Wall $debug -Werror $olevel -fPIC $event_flag $sendfile_flag $writev_flag $unix98_flag $mmap_flag $func_flag" >> Makefile
     fi
     if ! case $sysname in MINGW*) false;; esac; then
         if [ $wasm -eq 0 ]; then
diff --git a/docs/book/cn/install.md b/docs/book/cn/install.md
index 7673c56f..f7ae9a2c 100644
--- a/docs/book/cn/install.md
+++ b/docs/book/cn/install.md
@@ -41,8 +41,9 @@ $ sudo make install
 - `--prefix` 设置Melon的安装路径。
 - `--melang-prefix` 设置Melon库中使用到的Melang脚本的安装路径。
 - `--cc` 设置Melon组件编译时所使用的C编译器。
-- `--enable-wasm` 启用webassembly模式，会编译安装webassembly格式的Melon库。
-- `--debug` 开启debug模式，若不开启，则生成的库不包含符号信息，也不会启用`__DEBUG__`宏。
+- `--enable-wasm` 启用`webassembly`模式，会编译安装webassembly格式的Melon库。
+- `--debug` 开启`debug`模式，若不开启，则生成的库不包含符号信息，也不会启用`__DEBUG__`宏。
+- `--func` 开启`func`模式，开启后会将`MLN_FUNC`和`MLN_FUNC_VOID`定义的函数在调用时启用入口和出口回调。
 - `--olevel=[O|O1|O2|O3|...]` 编译优化的级别，默认是`O3`。如果`=`后不写内容则为不开启优化。
 - `--select=[all | module1,module2,...]` 选择性编译部分模块，默认为`all`表示编译全部模块。模块名称可在各模块文档中给出。
 - `--disable-macro=[macro1,macro2,...]` 禁用`configure`检测到的当前操作系统支持的系统调用或宏，目前仅支持如下内容：
diff --git a/docs/book/en/install.md b/docs/book/en/install.md
index 98f879b2..c170218d 100644
--- a/docs/book/en/install.md
+++ b/docs/book/en/install.md
@@ -36,8 +36,9 @@ Shell script `configure` has the following parameters:
 - `--prefix` The installation path of Melon library
 - `--melang-prefix` The installation path of the Melang script files that Melon used
 - `--cc` Set the C compiler that used to compile Melon
-- `--enable-wasm` Enable webassembly mode to generate webassembly format library
-- `--debug` Enable debug mode. If omited the generated library will not contain symbol information and macro `__DEBUG__`
+- `--enable-wasm` Enable `webassembly` mode to generate webassembly format library
+- `--debug` Enable `debug` mode. If omited the generated library will not contain symbol information and macro `__DEBUG__`
+- `--func` Enable `func` mode. When enabled, the functions defined by `MLN_FUNC` and `MLN_FUNC_VOID` will enable entry and exit callbacks when called.
 - `--olevel=[O|O1|O2|O3|...]` The level of compilation optimization, the default is `O3`. The optimization is disabled if no content after `=`.
 - `--select=[all | module1,module2,...]` Selectively compile some modules. The default is `all` which means compiling all modules. Module names can be given in the document for each module.
 - `--disable-macro=[macro1,macro2,...]` disables the system calls or macros supported by the current operating system detected by `configure`. Currently, only the following is supported: