makefile: symbol(s) not found for architecture

[Margarida Faria]

Hello!

I'm trying to solve an issue with makefile.

I have a main.cpp and then addOn.cpp and addOn.hpp.
I'm just trying to do the simple makefile to compile this.

I have:

main: Main.o addOn.o
	g++ -o main Main.o addOn.o
 
Main.o: main.cpp  addOn.hpp
	g++ -c main.cpp
 
addOn.o: addOn.cpp addOn.hpp
	g++ -c addOn.cpp

But keep getting:

Undefined symbols for architecture x86_64:
  "addOn::~addOn()", referenced from:
      _main in Main.o
  "addOn::overallVerboseLvl", referenced from:
      addOn::setLevel(int)  in Log.o
      addOn::addOn()   in addOn.o
      addOn::addOn()   in addOn.o
      addOn::operator<<(char const*)in addOn.o
  "addOn::fileName", referenced from:
      addOn::setFile(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)in addOn.o
      addOn::addOn(int)in addOn.o
      addOn::addOn(int)in addOn.o
      addOn::addOn()   in addOn.o
      addOn::addOn()   in addOn.o
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status
make: *** [main] Error 1

Please let me know if you need the code for all this. But it gives no errors in xCode4.