# dpkg --list|grep libsig
ii  libsigc++-1.2-5c2           1.2.7-2                             type-safe Signal Framework for C++ - runtime
ii  libsigc++-2.0-0c2a          2.0.17-2                            type-safe Signal Framework for C++ - runtime
ii  libsigc++-2.0-dev           2.0.17-2                            type-safe Signal Framework for C++ - develop
ii  libsigc++-dev               1.0.4-9.1                           Type-safe Signal Framework for C++ - develop
ii  libsigc++0c2                1.0.4-9.1                           Type-safe Signal Framework for C++ - runtime