Hello, template definitions must be present to their callers, ie when gcc finishes preprocessing prova91.cpp, it must see the contents of prova92.cpp (where you define prova). The conventional method of doing this is a bit weird, but something like this: change prova92.h to read: #ifndef _prova92_h #define _prova92_h template <class T> void prova(T k); #include "prova92.cpp" #endif To compile, you just compile prova91.cpp, and everything gets pulled in as needed. Hope that helps, Dara __________________________________ Do you Yahoo!? Free Pop-Up Blocker - Get it now http://companion.yahoo.com/
