I have the following class.
template <class T>
class DivideConquerTask {
public:
DivideConquerTask() = delete;
DivideConquerTask(int problemSize, int branchingSize);
virtual ~DivideConquerTask();
DivideConquerTask(const DivideConquerTask& other) = delete;
DivideConquerTask& operator=(const DivideConquerTask& rhs) = delete;
DivideConquerTask(DivideConquerTask&& other) = delete;
DivideConquerTask& operator=(DivideConquerTask&& rhs) = delete;
...
and in cpp file
template <class T>
DivideConquerTask<T>::DivideConquerTask(int problemSize, int branchingSize) :
_problemSize { problemSize }, _branchingSize { branchingSize } {
}
template <class T>
DivideConquerTask<T>::~DivideConquerTask() {
/* Currently no resources managed. */
}
I then have a class:
class MergeSortTask final : public DivideConquerTask<int> {
public:
virtual ~MergeSortTask();
MergeSortTask(int data[], int problemSize, int branchingSize);
...
with cpp file
MergeSortTask::~MergeSortTask() {
}
MergeSortTask::MergeSortTask(int* data, int problemSize, int branchingSize) :
DivideConquerTask(problemSize, branchingSize), _data { data } {
}
and from this I get error messages:
undefined reference to Actors::DivideConquerTask<int>::~DivideConquerTask()
undefined reference toActors::DivideConquerTask::DivideConquerTask(int, int)
where Actors is the namespace everything is declared/defined in.
What's the problem here? Why can't it find my base constructor/destructor?
Note: I have omitted some trivial functions that are working fine.
