Andre Kirchner <supercroc1974@xxxxxxxxx> writes: > What is this undefined reference to > `__gxx_personality_v0, and how do I fix it? > The following is the code of main.cpp, Connecot.h and > Connector.cpp if it may help you to find the problem. __gxx_personality_v0 is an internal symbol used by g++. It is defined inside the C++ standard library libstdc++. When you try to make an executable with 'gcc' it only links against the standard C libraries (not libstdc++) so you have to have to use g++ to link everything correctly for C++. -- Brian Gough Network Theory Ltd, Publishing "An Introduction to GCC" --- http://www.network-theory.co.uk/