error LNK2019: unresolved external symbol _luaJIT_setmode

Question

I have this piece of code (file luascript.cpp):

bool LuaInterface::initState()
{
    m_luaState = luaL_newstate();
    if(!m_luaState)
        return false;

    luaL_openlibs(m_luaState);
#ifdef __LUAJIT__
    luaJIT_setmode(m_luaState, 0, LUAJIT_MODE_ENGINE | LUAJIT_MODE_ON);
#endif

    registerFunctions();
    if(!loadDirectory(getFilePath(FILE_TYPE_OTHER, "lib/"), false, true))
        std::clog << "[Warning - LuaInterface::initState] Cannot load " << getFilePath(FILE_TYPE_OTHER, "lib/") << std::endl;

    lua_newtable(m_luaState);
    lua_setfield(m_luaState, LUA_REGISTRYINDEX, "EVENTS");
    m_runningEvent = EVENT_ID_USER;
    return true;
}

the declaration (file luajit.h):

LUA_API int luaJIT_setmode(lua_State *L, int idx, int mode);

and the error is:

1>luascript.obj : error LNK2019: unresolved external symbol _luaJIT_setmode referenced in function "public: virtual bool __thiscall LuaInterface::initState(void)" (?initState@LuaInterface@@UAE_NXZ)
1>C:\Users\GUIAKI\Documents\trunk.r5918\vc10\Debug\tfs.exe : fatal error LNK1120: 1 unresolved externals

How can I solve it?

Answer 1

Simply remove that line.

You can't link against plain Lua, if you keep it. And if you link against LuaJIT, the JIT compiler is enabled by default, anyway. That line of code is utterly pointless.