Question

I m trying to compile this code and linking fails with the following error:
this is how i m compiling it;

g++ logtester.cc -I/home/foo/include -L/home/foo/lib -llog4cxx


/tmp/ccADKreY.o(.text+0x120): In function `main': undefined reference to `FrameworkLogger::getInstance()'
collect2: ld returned 1 exit status    

Why? how can i fix it?

#include <log4cxx/logger.h>
#include <log4cxx/xml/domconfigurator.h>

using namespace log4cxx;
using namespace log4cxx::xml;
using namespace log4cxx::helpers;

class FrameworkLogger
{
    private:
        FrameworkLogger();
        LoggerPtr logger;

    public: 
        static LoggerPtr getInstance();

};

(Another file:)

#include "FrameworkLogger.h"
#include <iostream>

LoggerPtr FrameworkLogger::getInstance()
{
    std::cout<<"test";
}

(Yet another file:)

#include "FrameworkLogger.h"
#include <iostream>

using namespace std;

int main(){
//      LoggerPtr logger =
        FrameworkLogger::getInstance();
        std::cout<<"test";
}

Answer 1

This sounds like a linker error. Ensure that you are properly linking all of your object files