> ../../../gcc-4.6.0/libgcc/../gcc/gcov-io.c: 38:31: error: > 'GCOV_IP_ADDRESS' undeclared here (not in a function) > > I need to declare GCOV_IP_ADRESS in any place? Yes. It can either be done within your program ie: #define GCOV_IP_ADRESS 127.0.0.1 Or on the gcc command line (using the -D option) ie: gcc -D GCOV_IP_ADRESS=127.0.0.1 Regards, Andrew