C++Talk.NET

nivas · Guest

Hi.

I want to build a program which dynamically loads from a shared object
a template class.
Thus:
1. I am creating the shared_object.cpp, shared_object.h which defines
the <template> class 2. Build with g++ -shared -fPIC shared_object.cpp
-o libshared_object.so 3. Inlcude the shared_object.h in the sources of
the program 4. build the program with -lshared_object

Unfortunately it complains about undefined reference to the class.
Any help

Thanks
Nik

ondra.holub · Guest

I think you have definition of template methods in .cc (.cpp) file, not
in header. When you want to use templates, you have to write
definitions of template methods (functions) into header.