COMPCERT_LICENSE

All files in this distribution are part of the CompCert verified compiler.

The CompCert verified compiler is Copyright 2004, 2005, 2006, 2007,
2008, 2009, 2010, 2011, 2012, 2013 Institut National de Recherche en
Informatique et en Automatique (INRIA).

The CompCert verified compiler is distributed under the terms of the
INRIA Non-Commercial License Agreement given below.  This is a
non-free license that grants you the right to use the CompCert verified
compiler for educational, research or evaluation purposes only, but
prohibits commercial uses.

The following files in this distribution are dual-licensed both under
the INRIA Non-Commercial License Agreement and under the Free Software
Foundation GNU General Public License, either version 2 or (at your
option) any later version:

  all files in the lib/ directory

  common/AST.v
  common/Behaviors.v
  common/Errors.v
  common/Events.v
  common/Globalenvs.v
  common/Memdata.v
  common/Memory.v
  common/Memtype.v
  common/Smallstep.v
  common/Switch.v
  common/Values.v

  cfrontend/Clight.v
  cfrontend/ClightBigstep.v
  cfrontend/Cop.v
  cfrontend/Csem.v
  cfrontend/Cstrategy.v
  cfrontend/Csyntax.v
  cfrontend/Ctypes.v

  backend/Cminor.v
  backend/CMlexer.mli
  backend/CMlexer.mll
  backend/CMparser.mly
  backend/CMtypecheck.ml
  backend/CMtypecheck.mli

  all files in the cparser/ directory 
        (except those listed below which are under a BSD license)

  all files in the exportclight/ directory

  Makefile

A copy of the GNU General Public License version 2 is included below.
The choice between the two licenses for the files listed above is left
to the user.  If you opt for the GNU General Public License, these
files are free software and can be used both in commercial and
non-commercial contexts, subject to the terms of the GNU General
Public License.

The files contained in the flocq/ directory and its subdirectories are
taken from the Flocq project, http://flocq.gforge.inria.fr/
These files are Copyright 2010-2012 INRIA and distributed under the
terms of the GNU Lesser General Public Licence, either version 3 of
the licence, or (at your option) any later version.  A copy of the GNU
Lesser General Public Licence version 3 is included below.

The files contained in the runtime/ directory and its subdirectories
are Copyright 2013 INRIA and distributed under the terms of the BSD
license, included below.

Finally, the following files are taken from the CIL library:
    cparser/Cabs.ml
    cparser/Lexer.mli
    cparser/Lexer.mll
    cparser/Parser.mly
These files are Copyright 2001-2005 George C. Necula, Scott McPeak,
Wes Weimer and Ben Liblit, and are distributed under the terms of the
BSD license, included below.

----------------------------------------------------------------------

INRIA Non-Commercial License Agreement for the CompCert verified compiler

1. Background: Institut National de Recherche en Informatique et en
   Automatique (the "Provider") developed the CompCert verified
   compiler (the "Software") and seeks to distribute the Software for
   public use and benefit.

2. Grant: The Provider hereby grants to you a revocable, nonexclusive,
   nontransferable, royalty-free and worldwide license (the "License")
   to use the Software solely for educational, research, or evaluation
   purposes, in accordance with Paragraph 3 below and subject to the
   terms and conditions of this License Agreement (the
   "Agreement"). The License entitles you to use the Software to
   conduct research or education and to create Derivative Works solely
   for academic, non-commercial research endeavors of the Licensee (A
   "Derivative Work" is a work that is a modification of, enhancement
   to, derived from, or based upon the Software).

3. Limitations on Use: The License is limited to noncommercial
   use. Noncommercial use relates only to educational, research,
   personal or evaluation purposes. Any other use is commercial use.
   You may not use the Software in connection with any activities
   which purpose is to procure a commercial gain to you or others.

4. Limitations on Distribution: If you distribute the Software or any
   derivative works of the Software, you will distribute them under
   the same terms and conditions as in this License, and you will not
   grant other rights to the Software or derivative works that are
   different from those provided by this License.

5. Ownership: The Software and the accompanying documentation are
   licensed, not sold, to you. The Software is a proprietary product
   of the Provider and is protected under French copyright law and
   international treaty revisions. The Provider retains all rights not
   specifically granted to you hereunder, including ownership of the
   Software and all copyrights, trade secrets, or other intellectual
   property rights in the Software and any accompanying information.

6. Publication Credit: You agree to acknowledge the INRIA CompCert
   research project with appropriate citations in any publication or
   presentation containing research results obtained in whole or in
   part through the use of the Software.

7. Term of License: The License is effective upon receipt by you of
   the Software and shall continue until terminated. The License will
   terminate immediately without notice by the Provider if you fail to
   comply with the terms and conditions of this Agreement. Upon
   termination of this License, you shall immediately discontinue all
   use of the Software provided hereunder, and return to the Provider
   or destroy the original and all copies of all such Software. All of
   your obligations under this Agreement shall survive the termination
   of the License.

8. Warranty: THE PROVIDER MAKES NO REPRESENTATIONS ABOUT THE
   SUITABILITY, USE, OR PERFORMANCE OF THIS SOFTWARE OR ABOUT ANY
   CONTENT OR INFORMATION MADE ACCESSIBLE BY THE SOFTWARE, FOR ANY
   PURPOSE. THE SOFTWARE IS PROVIDED "AS IS," WITHOUT EXPRESS OR
   IMPLIED WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED
   WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
   NONINFRINGEMENT WITH RESPECT TO THE SOFTWARE. THE PROVIDER IS NOT
   OBLIGATED TO SUPPORT OR ISSUE UPDATES TO THE SOFTWARE.

9. Limitation on Liability: This Software is provided free of charge
   and, accordingly, the Provider shall not be liable under any theory
   for any damages suffered by you or any user of the Software. UNDER
   NO CIRCUMSTANCES SHALL PROVIDER BE LIABLE TO YOU OR ANY OTHER
   PERSON FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR
   CONSEQUENTIAL DAMAGES OF ANY CHARACTER INCLUDING, WITHOUT
   LIMITATION, DAMAGES FOR LOSS OF GOODWILL, WORK STOPPAGE, COMPUTER
   FAILURE OR MALFUNCTION, OR ANY AND ALL OTHER ECONOMIC LOSS OR
   COMMERCIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THIS
   SOFTWARE, EVEN IF PROVIDER SHALL HAVE BEEN INFORMED OF THE
   POSSIBILITY OF SUCH DAMAGES, OR FOR ANY THIRD-PARTY CLAIMS.

10. Disputes: The Parties agree to attempt to settle amicably any
   controversy or claim arising under this Agreement or a breach of
   this Agreement. Thereafter, both parties agree that all disputes
   between them arising out of or relating to this Agreement, shall
   be submitted to non-binding mediation unless the parties mutually
   agree otherwise. All parties agree to exercise their best effort
   in good faith to resolve all disputes in mediation. This Agreement
   shall be governed and construed in accordance with the laws of
   France.

11. Entire Agreement: This Agreement contains the entire agreement
   between the parties with respect to the subject matter hereof, and
   it shall not be modified or amended except by an instrument in
   writing signed by both parties hereto.

----------------------------------------------------------------------

                      GNU GENERAL PUBLIC LICENSE
                         Version 2, June 1991

 Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

			    Preamble

  The licenses for most software are designed to take away your
freedom to share and change it.  By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
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Foundation's software and to any other program whose authors commit to
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  When we speak of free software, we are referring to freedom, not
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  To protect your rights, we need to make restrictions that forbid
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  For example, if you distribute copies of such a program, whether
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  Finally, any free program is threatened constantly by software
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  The precise terms and conditions for copying, distribution and
modification follow.

		    GNU GENERAL PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License.  The "Program", below,
refers to any such program or work, and a "work based on the Program"
means either the Program or any derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language.  (Hereinafter, translation is included without limitation in
the term "modification".)  Each licensee is addressed as "you".

Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope.  The act of
running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the
Program (independent of having been made by running the Program).
Whether that is true depends on what the Program does.

  1. You may copy and distribute verbatim copies of the Program's
source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep intact all the
notices that refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License
along with the Program.

You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.

  2. You may modify your copy or copies of the Program or any portion
of it, thus forming a work based on the Program, and copy and
distribute such modifications or work under the terms of Section 1
above, provided that you also meet all of these conditions:

    a) You must cause the modified files to carry prominent notices
    stating that you changed the files and the date of any change.

    b) You must cause any work that you distribute or publish, that in
    whole or in part contains or is derived from the Program or any
    part thereof, to be licensed as a whole at no charge to all third
    parties under the terms of this License.

    c) If the modified program normally reads commands interactively
    when run, you must cause it, when started running for such
    interactive use in the most ordinary way, to print or display an
    announcement including an appropriate copyright notice and a
    notice that there is no warranty (or else, saying that you provide
    a warranty) and that users may redistribute the program under
    these conditions, and telling the user how to view a copy of this
    License.  (Exception: if the Program itself is interactive but
    does not normally print such an announcement, your work based on
    the Program is not required to print an announcement.)

These requirements apply to the modified work as a whole.  If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
themselves, then this License, and its terms, do not apply to those
sections when you distribute them as separate works.  But when you
distribute the same sections as part of a whole which is a work based
on the Program, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the
entire whole, and thus to each and every part regardless of who wrote it.

Thus, it is not the intent of this section to claim rights or contest
your rights to work written entirely by you; rather, the intent is to
exercise the right to control the distribution of derivative or
collective works based on the Program.

In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
a storage or distribution medium does not bring the other work under
the scope of this License.

  3. You may copy and distribute the Program (or a work based on it,
under Section 2) in object code or executable form under the terms of
Sections 1 and 2 above provided that you also do one of the following:

    a) Accompany it with the complete corresponding machine-readable
    source code, which must be distributed under the terms of Sections
    1 and 2 above on a medium customarily used for software interchange; or,

    b) Accompany it with a written offer, valid for at least three
    years, to give any third party, for a charge no more than your
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    c) Accompany it with the information you received as to the offer
    to distribute corresponding source code.  (This alternative is
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The source code for a work means the preferred form of the work for
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If distribution of executable or object code is made by offering
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  4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License.  Any attempt
otherwise to copy, modify, sublicense or distribute the Program is
void, and will automatically terminate your rights under this License.
However, parties who have received copies, or rights, from you under
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  5. You are not required to accept this License, since you have not
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If any portion of this section is held invalid or unenforceable under
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It is not the purpose of this section to induce you to infringe any
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This section is intended to make thoroughly clear what is believed to
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  8. If the distribution and/or use of the Program is restricted in
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original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
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the limitation as if written in the body of this License.

  9. The Free Software Foundation may publish revised and/or new versions
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Each version is given a distinguishing version number.  If the Program
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  10. If you wish to incorporate parts of the Program into other free
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			    NO WARRANTY

  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
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  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.

		     END OF TERMS AND CONDITIONS

	    How to Apply These Terms to Your New Programs

  If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.

  To do so, attach the following notices to the program.  It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.

    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>

    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 2 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.

Also add information on how to contact you by electronic and paper mail.

If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:

    Gnomovision version 69, Copyright (C) year name of author
    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License.  Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.

You should also get your employer (if you work as a programmer) or your
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necessary.  Here is a sample; alter the names:

  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
  `Gnomovision' (which makes passes at compilers) written by James Hacker.

  <signature of Ty Coon>, 1 April 1989
  Ty Coon, President of Vice

This General Public License does not permit incorporating your program into
proprietary programs.  If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library.  If this is what you want to do, use the GNU Lesser General
Public License instead of this License.

----------------------------------------------------------------------

                   BSD License

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,
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3. The names of the contributors may not be used to endorse or promote
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

----------------------------------------------------------------------

                  GNU LESSER GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007

 Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
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