GCC RUNTIME LIBRARY EXCEPTION

Version 3.1, 31 March 2009

General information: http://www.gnu.org/licenses/gcc-exception.html

Copyright (C) 2009 Free Software Foundation, Inc. <http://fsf.org/>

Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.

This GCC Runtime Library Exception ("Exception") is an additional
permission under section 7 of the GNU General Public License, version 3
("GPLv3"). It applies to a given file (the "Runtime Library") that bears
a notice placed by the copyright holder of the file stating that the
file is governed by GPLv3 along with this Exception.

When you use GCC to compile a program, GCC may combine portions of
certain GCC header files and runtime libraries with the compiled
program. The purpose of this Exception is to allow compilation of
non-GPL (including proprietary) programs to use, in this way, the header
files and runtime libraries covered by this Exception.

0. Definitions.

  A file is an "Independent Module" if it either requires the Runtime
  Library for execution after a Compilation Process, or makes use of an
  interface provided by the Runtime Library, but is not otherwise based
  on the Runtime Library.

  "GCC" means a version of the GNU Compiler Collection, with or without
  modifications, governed by version 3 (or a specified later version) of
  the GNU General Public License (GPL) with the option of using any
  subsequent versions published by the FSF.

  "GPL-compatible Software" is software whose conditions of propagation,
  modification and use would permit combination with GCC in accord with
  the license of GCC.

  "Target Code" refers to output from any compiler for a real or virtual
  target processor architecture, in executable form or suitable for
  input to an assembler, loader, linker and/or execution phase.
  Notwithstanding that, Target Code does not include data in any format
  that is used as a compiler intermediate representation, or used for
  producing a compiler intermediate representation.

  The "Compilation Process" transforms code entirely represented in
  non-intermediate languages designed for human-written code, and/or in
  Java Virtual Machine byte code, into Target Code. Thus, for example,
  use of source code generators and preprocessors need not be considered
  part of the Compilation Process, since the Compilation Process can be
  understood as starting with the output of the generators or
  preprocessors.

  A Compilation Process is "Eligible" if it is done using GCC, alone or
  with other GPL-compatible software, or if it is done without using any
  work based on GCC. For example, using non-GPL-compatible Software to
  optimize any GCC intermediate representations would not qualify as an
  Eligible Compilation Process.

1. Grant of Additional Permission.

   You have permission to propagate a work of Target Code formed by
   combining the Runtime Library with Independent Modules, even if such
   propagation would otherwise violate the terms of GPLv3, provided that
   all Target Code was generated by Eligible Compilation Processes. You
   may then convey such a combination under terms of your choice,
   consistent with the licensing of the Independent Modules.

2. No Weakening of GCC Copyleft.

  The availability of this Exception does not imply any general
  presumption that third-party software is unaffected by the copyleft
  requirements of the license of GCC.
