This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version  2.1  of  the  License, or (at your option) any later
version.

This library is distributed in the hope that it will be  useful,
but  WITHOUT  ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You  should  have  received  a copy of the GNU Lesser General Public
License along with this library; if not, write  to  the  Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110‐1301
USA

On Debian systems you can find a copy of the GNU Lesser General Public
License at /usr/share/common-licenses/LGPL-2.1.