LICENSE

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

The CompCert verified compiler is Copyright by Institut National de 
Recherche en Informatique et en Automatique (INRIA) and
AbsInt Angewandte Informatik GmbH.

The CompCert verified compiler is distributed under the terms of the
INRIA Non-Commercial License Agreement given below or under the terms
of a Software Usage Agreement of AbsInt Angewandte Informatik GmbH.
The latter is a separate contract document.

The INRIA Non-Commercial License Agreement 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 
any commercial uses.

For commercial use you need a Software Usage Agreement from 
AbsInt Angewandte Informatik GmbH.

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

  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 2010-2013 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 2013-2014 INRIA and 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

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		    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
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the term "modification".)  Each licensee is addressed as "you".

Activities other than copying, distribution and modification are not
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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
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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
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    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
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    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
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on the Program, the distribution of the whole must be on the terms of
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Thus, it is not the intent of this section to claim rights or contest
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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
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  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
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This section is intended to make thoroughly clear what is believed to
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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
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		     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
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    <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
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    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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    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.,
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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
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    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
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The hypothetical commands `show w' and `show c' should show the appropriate
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You should also get your employer (if you work as a programmer) or your
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  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.

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

                  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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  If the Library as you received it specifies that a proxy can decide
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