luzer: compat

Author: ligurio

luzer/compat.c

@@ -2,7 +2,15 @@
 #include "lualib.h"
 #include "lauxlib.h"
 
-#if !defined(LUA_VERSION_NUM) || LUA_VERSION_NUM == 501
+/* PUC-Rio Lua uses lconfig_h as include guard for luaconf.h,
+ * LuaJIT uses luaconf_h. If you use PUC-Rio's include files
+ * but LuaJIT's library, you will need to define the macro
+ * COMPAT52_IS_LUAJIT yourself! */
+#if !defined(COMPAT52_IS_LUAJIT) && defined(luaconf_h)
+#define COMPAT52_IS_LUAJIT
+#endif
+
+#if !defined(LUA_VERSION_NUM) || (LUA_VERSION_NUM == 501 && !defined(COMPAT52_IS_LUAJIT))
 
 static int
 countlevels(lua_State *L) {

luzer/compat.h

@@ -1,7 +1,11 @@
 #ifndef LUZER_COMPAT_H_
 #define LUZER_COMPAT_H_
 
+#if !defined(LUA_VERSION_NUM) || (LUA_VERSION_NUM == 501 && !defined(COMPAT52_IS_LUAJIT))
+
 void luaL_traceback(lua_State *L, lua_State *L1,
 					const char *msg, int level);
 
+#endif
+
 #endif  // LUZER_COMPAT_H_