Data Compression Library (zlib), version 1.2.11

zlib is a general purpose data compression library.

Optionally used in Qt Core and and development tools. Configure with -system-zlib to avoid.

The sources can be found in qt5.13.1-src/qtbase/src/3rdparty/zlib.

Project Homepage, upstream version: 1.2.11

  (C) 1995-2017 Jean-loup Gailly and Mark Adler

zlib License.

  This software is provided 'as-is', without any express or implied
    warranty.  In no event will the authors be held liable for any damages
    arising from the use of this software.

    Permission is granted to anyone to use this software for any purpose,
    including commercial applications, and to alter it and redistribute it
    freely, subject to the following restrictions:

    1. The origin of this software must not be misrepresented; you must not
       claim that you wrote the original software. If you use this software
       in a product, an acknowledgment in the product documentation would be
       appreciated but is not required.
    2. Altered source versions must be plainly marked as such, and must not be
       misrepresented as being the original software.
    3. This notice may not be removed or altered from any source distribution.

    Jean-loup Gailly        Mark Adler

  If you use the zlib library in a product, we would appreciate *not* receiving
  lengthy legal documents to sign.  The sources are provided for free but without
  warranty of any kind.  The library has been entirely written by Jean-loup
  Gailly and Mark Adler; it does not include third-party code.

  If you redistribute modified sources, we would appreciate that you include in
  the file ChangeLog history information documenting your changes.  Please read
  the FAQ for more information on the distribution of modified source versions.