1 files changed, 5 insertions, 1 deletions

diff --git a/src/luasocket.h b/src/luasocket.h
index 3949421..608ff7b 100644
--- a/src/luasocket.h
+++ b/src/luasocket.h
@@ -11,7 +11,7 @@
 /*-------------------------------------------------------------------------*\
 * Current socket library version
 \*-------------------------------------------------------------------------*/
-#define LUASOCKET_VERSION    "LuaSocket 2.1.0"
+#define LUASOCKET_VERSION    "LuaSocket 2.1.1"
 #define LUASOCKET_COPYRIGHT  "Copyright (C) 1999-2011 Diego Nehab"
 #define LUASOCKET_AUTHORS    "Diego Nehab"
 
@@ -22,6 +22,10 @@
 #define LUASOCKET_API extern
 #endif
 
+#if LUA_VERSION_NUM     > 501 & !( defined LUA_COMPAT_MODULE)
+#       error Lua 5.2 requires LUA_COMPAT_MODULE defined for luaL_openlib
+#endif
+
 /*-------------------------------------------------------------------------*\
 * Initializes the library.
 \*-------------------------------------------------------------------------*/