Hello, I just installed gcc-4.0.1 in Tiger and when I try to compile a simple test program from the command line, I get this : supports-mac-mini:~/desktop Support$ CC test.cpp /usr/bin/ld: Undefined symbols: std::basic_ostream<char, std::char_traits<char> >::operator<<(std::basic_ostream<char, std::char_traits<char> >& (*)(std::basic_ostream<char, std::char_traits<char> >&)) std::ios_base::Init::Init() std::ios_base::Init::~Init() std::cout std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&) std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*) ___gxx_personality_v0 collect2: ld returned 1 exit status Anyone know what it means? Thanks.