diff --git a/configure.ac b/configure.ac
index a7f92c8..4d40ac9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -5,7 +5,6 @@ AC_INIT([lua], [0.5.2b], [xsang.le@gmail.com])
 # [subdir-objects] if needed
 AM_INIT_AUTOMAKE([subdir-objects])
 
-: ${CFLAGS="-g -O0"}
 # dependencies
 # C compiler
 AC_PROG_CC
diff --git a/dist/lua-0.5.2b.tar.gz b/dist/lua-0.5.2b.tar.gz
index 37c6f20..e385464 100644
Binary files a/dist/lua-0.5.2b.tar.gz and b/dist/lua-0.5.2b.tar.gz differ
diff --git a/lua-api.c b/lua-api.c
index 866681c..156ff8e 100644
--- a/lua-api.c
+++ b/lua-api.c
@@ -1,4 +1,4 @@
-#include <antd/plugin.h>
+#define PLUGIN_IMPLEMENT 1
 #include "lua-api.h"
 
 static const struct luaL_Reg modules [] = {
diff --git a/lua-api.h b/lua-api.h
index 179ad21..27df369 100644
--- a/lua-api.h
+++ b/lua-api.h
@@ -2,6 +2,7 @@
 #define LUA_API_H
 #include <antd/handle.h>
 #include <antd/utils.h>
+#include <antd/plugin.h>
 #include "3rd/lua-5.3.4/lua.h"
 #include "3rd/lua-5.3.4/lauxlib.h"
 #include "3rd/lua-5.3.4/lualib.h"