folgendes:

[code]
// mm_logger.hpp
#ifndef __MM_LOGGER_HPP__
#define __MM_LOGGER_HPP__

#include <ostream>
#include <string>
#include <ctime>

namespace mm {

class Logger {
private:
std::ostream& m_stream;
unsigned m_level;
public:
Logger(std::ostream& stream, const unsigned level) : m_stream(stream), m_level(level) {}
template <typename type> void LogMsg(const unsigned, const std::string, const std::string, const type&);
};

}

#endif // __MM_LOGGER_HPP__
[quote]

[code]
#include "mm_logger.hpp"

template <typename type>
void mm::Logger::LogMsg(const unsigned req,
const std::string sub,
const std::string msg,
const type& val) {
if(m_level >= req)
m_stream << "DATE, TIME " << sub << msg << val << std::endl;
}
[quote]

[code]
#include <iostream>
#include <string>

#include "logger/mm_logger.hpp"

const std::string LEX("LEXER");

int main(int argc, char *argv[])
{
mm::Logger log(std::cerr, 2);
log.LogMsg(1, LEX, "Das ist ein Test", 3.14);
system("PAUSE");
return EXIT_SUCCESS;
}
[quote]

[quote="MinGW 3.4.2"]
F:\source\projects\mm_rc1\main.o(.text+0x232) In function main': \[Linker error\] undefined reference tovoid mm::Logger::LogMsg<double>(unsigned int, std::string, std::string, double const&)'
F:\source\projects\mm_rc1\main.o(.text+0x22c) ld returned 1 exit status
F:\source\projects\mm_rc1\Makefile.win [Build Error] [mm.exe] Error 1
[quote]

Ich verwende DevCpp IDE, alle Datein sind im Projekt (mm_logger.cpp ist auch in der Makefile eingetragen) ... wo ist der Fehler?

MfG && THX

sorry für den Doppelpost, hier nochmal besser lesbar:

// mm_logger.hpp
#ifndef __MM_LOGGER_HPP__
#define __MM_LOGGER_HPP__

#include <ostream>
#include <string>
#include <ctime>

namespace mm {

class Logger {
private:
std::ostream& m_stream;
unsigned m_level;
public:
Logger(std::ostream& stream, const unsigned level) : m_stream(stream), m_level(level) {}
template <typename type> void LogMsg(const unsigned, const std::string, const std::string, const type&);
};

}

#endif // __MM_LOGGER_HPP__

#include "mm_logger.hpp"

template <typename type>
void mm::Logger::LogMsg(const unsigned req,
const std::string sub,
const std::string msg,
const type& val) {
if(m_level >= req)
m_stream << "DATE, TIME " << sub << msg << val << std::endl;
}

#include <iostream>
#include <string>

#include "logger/mm_logger.hpp"

const std::string LEX("LEXER");

int main(int argc, char *argv[])
{
mm::Logger log(std::cerr, 2);
log.LogMsg(1, LEX, "Das ist ein Test", 3.14);
system("PAUSE");
return EXIT_SUCCESS;
}

MinGW 3.4.2 schrieb:

F:\source\projects\mm_rc1\main.o(.text+0x232) In function main': \[Linker error\] undefined reference tovoid mm::Logger::LogMsg<double>(unsigned int, std::string, std::string, double const&)'
F:\source\projects\mm_rc1\main.o(.text+0x22c) ld returned 1 exit status
F:\source\projects\mm_rc1\Makefile.win [Build Error] [mm.exe] Error 1

Ich verwende DevCpp IDE, alle Datein sind im Projekt (mm_logger.cpp ist auch in der Makefile eingetragen) ... wo ist der Fehler?

MfG && THX