compile problem with template class.

20 Jul 2003

      Hi,

why this simple codes fail to compile (error during linking)?
/************************ Kelas.h **********************/
template<typename T>
class Kelas {
    public:
        Kelas();
        int getInt() const;
};

/************************ Kelas.cpp **********************/
#include "Kelas.h"

template<typename T>
Kelas<T>::Kelas() {

}

template<typename T>
int Kelas<T>::getInt() const {
    return 100;
}

/*********************** coba.cpp ***************************/
#include <iostream>
#include "Kelas.h"
using namespace::std;

int main() {
    Kelas<int> k;
    cout << k.getInt() << endl;
}
/*********************** end of coba.cpp ***************************/

Compilation:
1. "g++ -c Kelas.cpp" success.
2. "g++ -c coba.cpp" success.
3. "g++ -o haha coba.o Kelas.o -L." failed:
      coba.o(.text+0x18): In function `main':
      : undefined reference to `Kelas<int>::Kelas[in-charge]()'
      coba.o(.text+0x32): In function `main':
      : undefined reference to `Kelas<int>::getInt() const'
      collect2: ld returned 1 exit status

TIA.

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compile problem with template class.

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