Linker meckert, ich weiß aber nicht was fehlt

Hi !

Folgenden Code hab ich geschrieben (iss bei weitem nocht nicht fertig):
MapData.h:

#ifndef MAPDATA_H
#define MAPDATA_H

#include "SDL.h"

class MapData {
    public:
    MapData();
    ~MapData();

    double version;
    int mapWidth;
    int mapHeight;
    Uint8 mapBpp;
    char* pixelData;
    char* maskData;

};

#endif

MapData.cpp:

#include "MapData.h"

MapData::MapData() {}
MapData::~MapData() {}

LevelLoader.h:

#ifndef LEVELLOADER_H
#define LEVELLOADER_H

#include "SDL.h"
#include "MapData.h"

class LevelLoader {
    public:

    void loadLevel( char* filename );
};

#endif

LevelLoader.cpp:

#include "LevelLoader.h"
#include <iostream>
#include <fstream>

using namespace std;

void LevelLoader::loadLevel( char* filename ) {
    ifstream* infile = new ifstream();
}

int main( int argc, char** argv ) {
}

Beim Kompilieren erhalte ich folgenden Fehler:

tom@aa1es4pu6b84qts:~/Eigene Dateien/Programmieren/C++ Workspace/Game> make
gcc `sdl-config --libs` -lSDL_image -std=c99 MapData.o LevelLoader.o -o LevelLoader
LevelLoader.o(.text+0xf): In function `LevelLoader::loadLevel(char*)':
: undefined reference to `operator new(unsigned)'
LevelLoader.o(.text+0x24): In function `LevelLoader::loadLevel(char*)':
: undefined reference to `std::basic_ifstream<char, std::char_traits<char> >::basic_ifstream[in-charge]()'
LevelLoader.o(.text+0x49): In function `LevelLoader::loadLevel(char*)':
: undefined reference to `operator delete(void*)'
LevelLoader.o(.text+0xa6): In function `__static_initialization_and_destruction_0(int, int)':
: undefined reference to `std::ios_base::Init::Init[in-charge]()'
LevelLoader.o(.text+0xd5): In function `__tcf_0':
: undefined reference to `std::ios_base::Init::~Init [in-charge]()'
LevelLoader.o(.eh_frame+0x12): undefined reference to `__gxx_personality_v0'
collect2: ld returned 1 exit status
make: *** [LevelLoader] Fehler 1

Mein Makefile sieht so aus:

cc = gcc
linkerFlags = -c `sdl-config --cflags`
compileFlags = `sdl-config --libs` -lSDL_image

LevelLoader : LevelLoader.o MapData.o
        $(cc) $(compileFlags) -std=c99 MapData.o LevelLoader.o -o LevelLoader

LevelLoader.o : LevelLoader.cpp
        $(cc) $(linkerFlags) LevelLoader.cpp

MapData.o : MapData.cpp
        $(cc) $(linkerFlags) MapData.cpp

Thx
Tom

Ponto

Benutze g++ anstatt gcc.

Danke...