I can compile from ther client side but not the server

I'm using GCC 4.7.2 on Fedora 18 with IceGrid (Sorry for the long post, but I'm really stuck). And I can compile this code on the client side:

try
{
    player = PlayerPrx::checkedCast(communicator()->stringToProxy("player"));
}
catch(const Ice::NotRegisteredException&)
{
    IceGrid::QueryPrx query = IceGrid::QueryPrx::checkedCast(communicator()->stringToProxy("IceGrid/Query"));
    player = PlayerPrx::checkedCast(query->findObjectByType("::NetworkICE::Player"));
}
if(!player)
{
    cerr << argv[0] << ": couldn't find a `::NetworkICE::Player' object." << endl;
    return EXIT_FAILURE;
}

But on the server side I cant compile this:

try
{
    locator = PlayerLocatorPrx::checkedCast(communicator()->stringToProxy("PlayerLocator"));
}
catch(const Ice::NotRegisteredException&)
{
    IceGrid::QueryPrx query = IceGrid::QueryPrx::checkedCast(communicator()->stringToProxy("IceGrid/Query"));
    locator = PlayerLocatorPrx::checkedCast(query->findObjectByType("::NetworkICE::PlayerLocator"));
}
if(!locator)
{
    cerr << argv[0] << ": couldn't find a `::NetworkICE::PlayerLocator' object." << endl;
    return EXIT_FAILURE;
}

Ice::PropertiesPtr properties = communicator()->getProperties();
Ice::ObjectAdapterPtr adapter = communicator()->createObjectAdapter("PlayerAdapter");
Ice::Identity id = communicator()->stringToIdentity(properties->getProperty("Identity"));
PlayerPtr player = new PlayerI();
adapter->add(player, id);
adapter->activate();
communicator()->waitForShutdown();

I get this error from GCC on the catch

main.cpp|| undefined reference to `IceProxy::IceGrid::Query::findObjectByType(std::string const&, std::map<std::string, std::string, std::less<std::string>, std::allocator<std::pair<std::string const, std::string> > > const*)'|

I'm really don't understand why this isn't compiling for the server side since its the basic same steps from the client side. I need that the server acts like a client getting information on another server called PlayerLocator that will store on which server every Player is connected on the grid.

The include files are the same for client and server. <Ice/Ice.h> and <IceGrid/IceGrid.h>