Compiling template function

[Nafai]

Hello I get linker error with files like these:

//function.h
template <typename T> void function(T*);

//function.cpp
template <typename T> void function(T* v)
{
...
}

// main.cpp
int main()
{
float v;
function(v);
}

g++ -o main main.o function.o <-- Linker error.

[Martin Gieseking]

> //function.h

template <typename T> void function(T*);

//function.cpp
template <typename T> void function(T* v)
{
...
}

// main.cpp
int main()
{
float v;
function(v);
}

Move the implementation of the template function to the header file so the
compiler can see it in main.cpp.

Martin

[John Harrison]

"Nafai" <na*******@yahoo.es> wrote in message
news:h7************************@telenews.teleline. es...

Hello I get linker error with files like these:

//function.h
template <typename T> void function(T*);

//function.cpp
template <typename T> void function(T* v)
{
...
}

All template code should go in header files.

john

[JKop]

Nafai posted:

Hello I get linker error with files like these:

//function.h
template <typename T> void function(T*);

//function.cpp
template <typename T> void function(T* v)
{
...
}

// main.cpp
int main()
{
float v;
function(v);
}

g++ -o main main.o function.o <-- Linker error.

Well, first thing that strikes me: Include "function.h" in
"main.cpp"!

#include "function.h"
Secondly, the entire template goes into the header file. Why? Because
it's dealt with entirely by the compiler, NOT the linker!

-JKop