Hi all (again), Xcode again. Seem like gcc optimize methods away, which are needed by code in another file. This means, I get Link errors. I ll try to discribe this as good as I could without the whole code : File1.h template <class t> class a { ... virtual bool isBig(); } File1.cpp template<class t> bool a<t>::isBig() { return false; } dummyfunctionfora() { a<char> aA; bool b; b = aA.isBig; } File2.cpp #include "File1.h" ... b = aA.isBig(); ... What I did : template class a is defined in File1, and only be used by a dummy function, which is not called. ( I try this that the compiler generates the needed code). This runs fine with CW and VS. But with gcc (xcode 2.1) this could lead into a link error. How could I solve this ? Is there any smarter way to make sure the template class is compiled for the types I want ? Is there a way to stop gcc from optimize my methods away ? The normal (xcode for gcc) setting for Optimizing I tried (different counts of link error, but never none). Thanks, Kristian Kratzenstein -------------------------------------------- Kristian Kratzenstein Gettorf Kristian.Kratzenstein@xxxxxxxxxxx --------------------------------------------