This is Debian GNU/Linux' pre-packaged copy of libsigc++, a library implementing a typesafe callback framework in C++ by Karl Nelson Originally from ftp://download.sourceforge.net/pub/sourceforge/libsigc Copyright: Distribution of library and components is under the LGPL as listed in the file COPYING.LIB. Examples and tests are Public Domain. See /usr/share/common-licenses/LGPL for the full license.