# ccache copyright and license

version 3.2.5

## Overall license

The license for ccache as a whole is as follows:

      This program is free software; you can redistribute it and/or modify it under
      the terms of the GNU General Public License as published by the Free Software
      Foundation; either version 3 of the License, or (at your option) any later
      version.

      This program 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 General Public License for more details.

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

The full license text can be found in GPL-3.0.txt and at http://www.gnu.org/licenses/gpl-3.0.html.

## Copyright and authors

ccache is a collective work with contributions from many people, listed in AUTHORS.txt and at http://ccache.samba.org/authors.html. Subsequent additions by contributing authors are implicitly licensed to the public under the same terms (GNU GPL version 3 or later), but the contributing authors retain copyrights on their portions of the work.

The copyright for ccache as a whole is as follows:

      Copyright (C) 2002-2007 Andrew Tridgell
      Copyright (C) 2009-2016 Joel Rosdahl

## Files derived from other sources

The ccache distribution contain some files from other sources and some have been modified for use in ccache. These files all carry attribution notices, and may qualify as “separate and independent works in themselves” for purposes of the GPL: that is, if separated from the ccache sources, they may be usable under less restrictive terms.

### getopt_long.[hc]

This implementation of `getopt_long()` was copied from PostgreSQL and has the following license text:

      Portions Copyright (c) 1987, 1993, 1994
      The Regents of the University of California.  All rights reserved.

      Portions Copyright (c) 2003
      PostgreSQL Global Development Group

      Redistribution and use in source and binary forms, with or without
      modification, are permitted provided that the following conditions
      are met:
      1. Redistributions of source code must retain the above copyright
         notice, this list of conditions and the following disclaimer.
      2. Redistributions in binary form must reproduce the above copyright
         notice, this list of conditions and the following disclaimer in the
         documentation and/or other materials provided with the distribution.
      3. Neither the name of the University nor the names of its contributors
         may be used to endorse or promote products derived from this software
         without specific prior written permission.

      THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
      ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
      IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
      ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
      FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
      DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
      OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
      HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
      LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
      OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
      SUCH DAMAGE.

### hashtable*.[hc]

This code comes from http://www.cl.cam.ac.uk/~cwc22/hashtable/ with the following license:

      Copyright (c) 2002, 2004, Christopher Clark
      All rights reserved.

      Redistribution and use in source and binary forms, with or without
      modification, are permitted provided that the following conditions are met:

        * Redistributions of source code must retain the above copyright notice,
          this list of conditions and the following disclaimer.

        * Redistributions in binary form must reproduce the above copyright notice,
          this list of conditions and the following disclaimer in the documentation
          and/or other materials provided with the distribution.

        * Neither the name of the original author; nor the names of any
          contributors may be used to endorse or promote products derived from this
          software without specific prior written permission.

      THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
      AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
      IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
      ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
      LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
      CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
      SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
      INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
      CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
      ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
      POSSIBILITY OF SUCH DAMAGE.

### m4/feature_macros.m4

This Autoconf M4 snippet comes from Python 2.6’s `configure.in` with the following license:

      A. HISTORY OF THE SOFTWARE
      ==========================

      Python was created in the early 1990s by Guido van Rossum at Stichting
      Mathematisch Centrum (CWI, see http://www.cwi.nl) in the Netherlands
      as a successor of a language called ABC.  Guido remains Python's
      principal author, although it includes many contributions from others.

      In 1995, Guido continued his work on Python at the Corporation for
      National Research Initiatives (CNRI, see http://www.cnri.reston.va.us)
      in Reston, Virginia where he released several versions of the
      software.

      In May 2000, Guido and the Python core development team moved to
      BeOpen.com to form the BeOpen PythonLabs team.  In October of the same
      year, the PythonLabs team moved to Digital Creations (now Zope
      Corporation, see http://www.zope.com).  In 2001, the Python Software
      Foundation (PSF, see http://www.python.org/psf/) was formed, a
      non-profit organization created specifically to own Python-related
      Intellectual Property.  Zope Corporation is a sponsoring member of
      the PSF.

      All Python releases are Open Source (see http://www.opensource.org for
      the Open Source Definition).  Historically, most, but not all, Python
      releases have also been GPL-compatible; the table below summarizes
      the various releases.

          Release         Derived     Year        Owner       GPL-
                          from                                compatible? (1)

          0.9.0 thru 1.2              1991-1995   CWI         yes
          1.3 thru 1.5.2  1.2         1995-1999   CNRI        yes
          1.6             1.5.2       2000        CNRI        no
          2.0             1.6         2000        BeOpen.com  no
          1.6.1           1.6         2001        CNRI        yes (2)
          2.1             2.0+1.6.1   2001        PSF         no
          2.0.1           2.0+1.6.1   2001        PSF         yes
          2.1.1           2.1+2.0.1   2001        PSF         yes
          2.2             2.1.1       2001        PSF         yes
          2.1.2           2.1.1       2002        PSF         yes
          2.1.3           2.1.2       2002        PSF         yes
          2.2.1           2.2         2002        PSF         yes
          2.2.2           2.2.1       2002        PSF         yes
          2.2.3           2.2.2       2003        PSF         yes
          2.3             2.2.2       2002-2003   PSF         yes
          2.3.1           2.3         2002-2003   PSF         yes
          2.3.2           2.3.1       2002-2003   PSF         yes
          2.3.3           2.3.2       2002-2003   PSF         yes
          2.3.4           2.3.3       2004        PSF         yes
          2.3.5           2.3.4       2005        PSF         yes
          2.4             2.3         2004        PSF         yes
          2.4.1           2.4         2005        PSF         yes
          2.4.2           2.4.1       2005        PSF         yes
          2.4.3           2.4.2       2006        PSF         yes
          2.4.4           2.4.3       2006        PSF         yes
          2.5             2.4         2006        PSF         yes
          2.5.1           2.5         2007        PSF         yes
          2.5.2           2.5.1       2008        PSF         yes
          2.5.3           2.5.2       2008        PSF         yes
          2.6             2.5         2008        PSF         yes
          2.6.1           2.6         2008        PSF         yes

      Footnotes:

      (1) GPL-compatible doesn't mean that we're distributing Python under
          the GPL.  All Python licenses, unlike the GPL, let you distribute
          a modified version without making your changes open source.  The
          GPL-compatible licenses make it possible to combine Python with
          other software that is released under the GPL; the others don't.

      (2) According to Richard Stallman, 1.6.1 is not GPL-compatible,
          because its license has a choice of law clause.  According to
          CNRI, however, Stallman's lawyer has told CNRI's lawyer that 1.6.1
          is "not incompatible" with the GPL.

      Thanks to the many outside volunteers who have worked under Guido's
      direction to make these releases possible.

      B. TERMS AND CONDITIONS FOR ACCESSING OR OTHERWISE USING PYTHON
      ===============================================================

      PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
      --------------------------------------------

      1. This LICENSE AGREEMENT is between the Python Software Foundation
      ("PSF"), and the Individual or Organization ("Licensee") accessing and
      otherwise using this software ("Python") in source or binary form and
      its associated documentation.

      2. Subject to the terms and conditions of this License Agreement, PSF hereby
      grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce,
      analyze, test, perform and/or display publicly, prepare derivative works,
      distribute, and otherwise use Python alone or in any derivative version,
      provided, however, that PSF's License Agreement and PSF's notice of copyright,
      i.e., "Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Python
      Software Foundation; All Rights Reserved" are retained in Python alone or in any
      derivative version prepared by Licensee.

      3. In the event Licensee prepares a derivative work that is based on
      or incorporates Python or any part thereof, and wants to make
      the derivative work available to others as provided herein, then
      Licensee hereby agrees to include in any such work a brief summary of
      the changes made to Python.

      4. PSF is making Python available to Licensee on an "AS IS"
      basis.  PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
      IMPLIED.  BY WAY OF EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND
      DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
      FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON WILL NOT
      INFRINGE ANY THIRD PARTY RIGHTS.

      5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
      FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
      A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON,
      OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.

      6. This License Agreement will automatically terminate upon a material
      breach of its terms and conditions.

      7. Nothing in this License Agreement shall be deemed to create any
      relationship of agency, partnership, or joint venture between PSF and
      Licensee.  This License Agreement does not grant permission to use PSF
      trademarks or trade name in a trademark sense to endorse or promote
      products or services of Licensee, or any third party.

      8. By copying, installing or otherwise using Python, Licensee
      agrees to be bound by the terms and conditions of this License
      Agreement.

      BEOPEN.COM LICENSE AGREEMENT FOR PYTHON 2.0
      -------------------------------------------

      BEOPEN PYTHON OPEN SOURCE LICENSE AGREEMENT VERSION 1

      1. This LICENSE AGREEMENT is between BeOpen.com ("BeOpen"), having an
      office at 160 Saratoga Avenue, Santa Clara, CA 95051, and the
      Individual or Organization ("Licensee") accessing and otherwise using
      this software in source or binary form and its associated
      documentation ("the Software").

      2. Subject to the terms and conditions of this BeOpen Python License
      Agreement, BeOpen hereby grants Licensee a non-exclusive,
      royalty-free, world-wide license to reproduce, analyze, test, perform
      and/or display publicly, prepare derivative works, distribute, and
      otherwise use the Software alone or in any derivative version,
      provided, however, that the BeOpen Python License is retained in the
      Software, alone or in any derivative version prepared by Licensee.

      3. BeOpen is making the Software available to Licensee on an "AS IS"
      basis.  BEOPEN MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
      IMPLIED.  BY WAY OF EXAMPLE, BUT NOT LIMITATION, BEOPEN MAKES NO AND
      DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
      FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF THE SOFTWARE WILL NOT
      INFRINGE ANY THIRD PARTY RIGHTS.

      4. BEOPEN SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF THE
      SOFTWARE FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS
      AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THE SOFTWARE, OR ANY
      DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.

      5. This License Agreement will automatically terminate upon a material
      breach of its terms and conditions.

      6. This License Agreement shall be governed by and interpreted in all
      respects by the law of the State of California, excluding conflict of
      law provisions.  Nothing in this License Agreement shall be deemed to
      create any relationship of agency, partnership, or joint venture
      between BeOpen and Licensee.  This License Agreement does not grant
      permission to use BeOpen trademarks or trade names in a trademark
      sense to endorse or promote products or services of Licensee, or any
      third party.  As an exception, the "BeOpen Python" logos available at
      http://www.pythonlabs.com/logos.html may be used according to the
      permissions granted on that web page.

      7. By copying, installing or otherwise using the software, Licensee
      agrees to be bound by the terms and conditions of this License
      Agreement.

      CNRI LICENSE AGREEMENT FOR PYTHON 1.6.1
      ---------------------------------------

      1. This LICENSE AGREEMENT is between the Corporation for National
      Research Initiatives, having an office at 1895 Preston White Drive,
      Reston, VA 20191 ("CNRI"), and the Individual or Organization
      ("Licensee") accessing and otherwise using Python 1.6.1 software in
      source or binary form and its associated documentation.

      2. Subject to the terms and conditions of this License Agreement, CNRI
      hereby grants Licensee a nonexclusive, royalty-free, world-wide
      license to reproduce, analyze, test, perform and/or display publicly,
      prepare derivative works, distribute, and otherwise use Python 1.6.1
      alone or in any derivative version, provided, however, that CNRI's
      License Agreement and CNRI's notice of copyright, i.e., "Copyright (c)
      1995-2001 Corporation for National Research Initiatives; All Rights
      Reserved" are retained in Python 1.6.1 alone or in any derivative
      version prepared by Licensee.  Alternately, in lieu of CNRI's License
      Agreement, Licensee may substitute the following text (omitting the
      quotes): "Python 1.6.1 is made available subject to the terms and
      conditions in CNRI's License Agreement.  This Agreement together with
      Python 1.6.1 may be located on the Internet using the following
      unique, persistent identifier (known as a handle): 1895.22/1013.  This
      Agreement may also be obtained from a proxy server on the Internet
      using the following URL: http://hdl.handle.net/1895.22/1013".

      3. In the event Licensee prepares a derivative work that is based on
      or incorporates Python 1.6.1 or any part thereof, and wants to make
      the derivative work available to others as provided herein, then
      Licensee hereby agrees to include in any such work a brief summary of
      the changes made to Python 1.6.1.

      4. CNRI is making Python 1.6.1 available to Licensee on an "AS IS"
      basis.  CNRI MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
      IMPLIED.  BY WAY OF EXAMPLE, BUT NOT LIMITATION, CNRI MAKES NO AND
      DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
      FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON 1.6.1 WILL NOT
      INFRINGE ANY THIRD PARTY RIGHTS.

      5. CNRI SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
      1.6.1 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
      A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 1.6.1,
      OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.

      6. This License Agreement will automatically terminate upon a material
      breach of its terms and conditions.

      7. This License Agreement shall be governed by the federal
      intellectual property law of the United States, including without
      limitation the federal copyright law, and, to the extent such
      U.S. federal law does not apply, by the law of the Commonwealth of
      Virginia, excluding Virginia's conflict of law provisions.
      Notwithstanding the foregoing, with regard to derivative works based
      on Python 1.6.1 that incorporate non-separable material that was
      previously distributed under the GNU General Public License (GPL), the
      law of the Commonwealth of Virginia shall govern this License
      Agreement only as to issues arising under or with respect to
      Paragraphs 4, 5, and 7 of this License Agreement.  Nothing in this
      License Agreement shall be deemed to create any relationship of
      agency, partnership, or joint venture between CNRI and Licensee.  This
      License Agreement does not grant permission to use CNRI trademarks or
      trade name in a trademark sense to endorse or promote products or
      services of Licensee, or any third party.

      8. By clicking on the "ACCEPT" button where indicated, or by copying,
      installing or otherwise using Python 1.6.1, Licensee agrees to be
      bound by the terms and conditions of this License Agreement.

              ACCEPT

      CWI LICENSE AGREEMENT FOR PYTHON 0.9.0 THROUGH 1.2
      --------------------------------------------------

      Copyright (c) 1991 - 1995, Stichting Mathematisch Centrum Amsterdam,
      The Netherlands.  All rights reserved.

      Permission to use, copy, modify, and distribute this software and its
      documentation for any purpose and without fee is hereby granted,
      provided that the above copyright notice appear in all copies and that
      both that copyright notice and this permission notice appear in
      supporting documentation, and that the name of Stichting Mathematisch
      Centrum or CWI not be used in advertising or publicity pertaining to
      distribution of the software without specific, written prior
      permission.

      STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
      THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
      FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
      FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
      WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
      ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
      OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

### murmurhashneutral2.[hc]

This fast hash implementation is released to the public domain by Austin Appleby. See http://murmurhash.googlepages.com.

### snprintf.c and m4/snprintf.m4

This implementation of `snprintf()` and similar functions was downloaded from http://www.jhweiss.de/software/snprintf.html and has the following license:

      Copyright (c) 1995 Patrick Powell.

      This code is based on code written by Patrick Powell <papowell@astart.com>.
      It may be used for any purpose as long as this notice remains intact on all
      source code distributions.

      Copyright (c) 2008 Holger Weiss.

      This version of the code is maintained by Holger Weiss <holger@jhweiss.de>.
      My changes to the code may freely be used, modified and/or redistributed for
      any purpose. It would be nice if additions and fixes to this file (including
      trivial code cleanups) would be sent back in order to let me include them in
      the version available at <http://www.jhweiss.de/software/snprintf.html>.
      However, this is not a requirement for using or redistributing (possibly
      modified) versions of this file, nor is leaving this notice intact mandatory.

### zlib/*.[hc]

This is a bundled subset of zlib 1.2.8 from http://zlib.net with the following license:

      Copyright (C) 1995-2013 Jean-loup Gailly and Mark Adler

      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
      jloup@gzip.org          madler@alumni.caltech.edu