Hi, I have a curious problem! In my company we use gcc 3.0.2, and at home there is still 2.95.... Whenever I want to compile a module using stl vectors or fstream with 3.0.2, I get many unresolved external errors. The compiler seems to know the template, since drops the exact prototype of some ofstream methods and vector methods... At home I can compile it whithout problems: g++ stltest.cpp So I guess I have to set some new command line parameters ??

It would help to see some of the code causing the problem.

Also, make sure than the symbolic link to the C++ library isn''t pointing to the old library (the gcc 2.9x).