Generally they are undefined references to several expressions like:
`std::basic_string<char, std::char_traits<char>, std::allocator<char>
>::append(char const*, unsigned int)'
in Signal.cpp for instance. Further files listed up are TimeValue.cpp
Looks like something is broken in your compiler installation. These
symbols should live in libstdc++. Everything is fine for me here (gcc
3.4.6 on x86-32/linux)