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. 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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 software--to make sure the software is free for all its users. This General Public License applies to most of the Free Software Foundation's software and to any other program whose authors commit to using it. (Some other Free Software Foundation software is covered by the GNU Lesser General Public License instead.) You can apply it to your programs, too. When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for this service if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs; and that you know you can do these things. To protect your rights, we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights. These restrictions translate to certain responsibilities for you if you distribute copies of the software, or if you modify it. For example, if you distribute copies of such a program, whether gratis or for a fee, you must give the recipients all the rights that you have. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights. We protect your rights with two steps: (1) copyright the software, and (2) offer you this license which gives you legal permission to copy, distribute and/or modify the software. Also, for each author's protection and ours, we want to make certain that everyone understands that there is no warranty for this free software. If the software is modified by someone else and passed on, we want its recipients to know that what they have is not the original, so that any problems introduced by others will not reflect on the original authors' reputations. Finally, any free program is threatened constantly by software patents. We wish to avoid the danger that redistributors of a free program will individually obtain patent licenses, in effect making the program proprietary. To prevent this, we have made it clear that any patent must be licensed for everyone's free use or not licensed at all. 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 cost of physically performing source distribution, a complete machine-readable copy of the corresponding source code, to be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, c) Accompany it with the information you received as to the offer to distribute corresponding source code. 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These actions are prohibited by law if you do not accept this License. Therefore, by modifying or distributing the Program (or any work based on the Program), you indicate your acceptance of this License to do so, and all its terms and conditions for copying, distributing or modifying the Program or works based on it. 6. Each time you redistribute the Program (or any work based on the Program), the recipient automatically receives a license from the original licensor to copy, distribute or modify the Program subject to these terms and conditions. You may not impose any further restrictions on the recipients' exercise of the rights granted herein. You are not responsible for enforcing compliance by third parties to this License. 7. If, as a consequence of a court judgment or allegation of patent infringement or for any other reason (not limited to patent issues), conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot distribute so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not distribute the Program at all. For example, if a patent license would not permit royalty-free redistribution of the Program by all those who receive copies directly or indirectly through you, then the only way you could satisfy both it and this License would be to refrain entirely from distribution of the Program. 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If the distribution and/or use of the Program is restricted in certain countries either by patents or by copyrighted interfaces, the original copyright holder who places the Program under this License may add an explicit geographical distribution limitation excluding those countries, so that distribution is permitted only in or among countries not thus excluded. In such case, this License incorporates the limitation as if written in the body of this License. 9. The Free Software Foundation may publish revised and/or new versions of the General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. Each version is given a distinguishing version number. If the Program specifies a version number of this License which applies to it and "any later version", you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of this License, you may choose any version ever published by the Free Software Foundation. 10. If you wish to incorporate parts of the Program into other free programs whose distribution conditions are different, write to the author to ask for permission. For software which is copyrighted by the Free Software Foundation, write to the Free Software Foundation; we sometimes make exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally. 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 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 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. Copyright (C) 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 school, if any, to sign a "copyright disclaimer" for the program, if 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. , 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. 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