Question

I have the following files:

listDriverTest.cpp
src/List.cpp
headers/List.h

The include in List.cpp is

#include "../headers/List.h"

The include in listDriverTest.cpp is

#include "headers/List.h"

When I compile with the following statement,

g++ listDriverTest.cpp "src/List.cpp"

I end up with a fair number of ‘undefined reference’ errors, e.g.

listDriverTest.cpp:(.text+0x81): undefined reference to `List<int>::List()'
listDriverTest.cpp:(.text+0x8f): undefined reference to `List<int>::add(int)'
listDriverTest.cpp:(.text+0x9d): undefined reference to `List<int>::add(int)'
...

How should I properly use includes and compile these three files in order for the compilation to work properly? I have gotten listDriverTest.cpp to compile and run properly with all the files in the same directory, but not when they’re broken up like this.

Answer 1

See my answer in Must a child of a template class also be a template class?.

It is probably a different question, but the same answer applies.