From bc327e3ea486d0e9316d208a8d13fe0ed13deb68 Mon Sep 17 00:00:00 2001
From: Dmitry Zaitsev <hhrhhr@users.noreply.github.com>
Date: Wed, 28 Jan 2015 22:38:06 +0300
Subject: [PATCH] compatibility with Lua 5.3

from http://www.lua.org/manual/5.3/manual.html#8.3

> Macros to project non-default integer types (luaL_checkint, luaL_optint, luaL_checklong, luaL_optlong) were deprecated
---
 lua_zlib.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lua_zlib.c b/lua_zlib.c
index 3f7186e..9d1f4a5 100644
--- a/lua_zlib.c
+++ b/lua_zlib.c
@@ -8,13 +8,18 @@
 /*
  * ** compatibility with Lua 5.2
  * */
-#if (LUA_VERSION_NUM == 502)
+#if (LUA_VERSION_NUM >= 502)
 #undef luaL_register
 #define luaL_register(L,n,f) \
                { if ((n) == NULL) luaL_setfuncs(L,f,0); else luaL_newlib(L,f); }
 
 #endif
 
+#if (LUA_VERSION_NUM >= 503)
+#undef luaL_optint
+#define luaL_optint(L,n,d)  ((int)luaL_optinteger(L,(n),(d)))
+#endif
+
 #define DEF_MEM_LEVEL 8
 
 typedef uLong (*checksum_t)        (uLong crc, const Bytef *buf, uInt len);