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GCC Runtime Library Copyright and License Agreement

The source code is distributed under the GNU General Public License version 3, with the addition under section 7 of an exception described in the "GCC Runtime Library Exception, version 3.1" as follows (or see the file COPYING.RUNTIME):

 

 

GCC RUNTIME LIBRARY EXCEPTION

 

Version 3.1, 31 March 2009

 

Copyright (C) 2009 Free Software Foundation, Inc.

www.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.

 

 

Hopefully that text is self-explanatory. If it isn't, you need to speak to your lawyer, or the Free Software Foundation.

See Also

copyright

GNU General Public License version 3

 


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