COPYING

The source code for libstdc++ and libgcc_s 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” below.

GNU General Public License version 3

Version 3, 29 June 2007

Copyright © 2007 Free Software Foundation, Inc. http://www.fsf.org/

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

Preamble

The GNU General Public License is a free, copyleft license for software and other kinds of works.

The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, the GNU 
General Public License is intended to guarantee your freedom to share and change all versions of a program—to make sure it remains free software for 
all its users. We, the Free Software Foundation, use the GNU General Public License for most of our software; it applies also to any other work 
released this way by its authors. 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 them 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 prevent others from denying you these rights or asking you to surrender the rights. Therefore, you have certain 
responsibilities if you distribute copies of the software, or if you modify it: responsibilities to respect the freedom of others.

For example, if you distribute copies of such a program, whether gratis or for a fee, you must pass on to the recipients the same freedoms that you 
received. 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.

Developers that use the GNU GPL protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this License giving you 
legal permission to copy, distribute and/or modify it.

For the developers’ and authors’ protection, the GPL clearly explains that there is no warranty for this free software. For both users’ and authors’ 
sake, the GPL requires that modified versions be marked as changed, so that their problems will not be attributed erroneously to authors of previous 
versions.

Some devices are designed to deny users access to install or run modified versions of the software inside them, although the manufacturer can do so. 
This is fundamentally incompatible with the aim of protecting users’ freedom to change the software. The systematic pattern of such abuse occurs in 
the area of products for individuals to use, which is precisely where it is most unacceptable. Therefore, we have designed this version of the GPL 
to prohibit the practice for those products. If such problems arise substantially in other domains, we stand ready to extend this provision to those 
domains in future versions of the GPL, as needed to protect the freedom of users.

Finally, every program is threatened constantly by software patents. States should not allow patents to restrict development and use of software on 
general-purpose computers, but in those that do, we wish to avoid the special danger that patents applied to a free program could make it 
effectively proprietary. To prevent this, the GPL assures that patents cannot be used to render the program non-free.

The precise terms and conditions for copying, distribution and modification follow.

TERMS AND CONDITIONS

0. Definitions.

“This License” refers to version 3 of the GNU General Public License.

“Copyright” also means copyright-like laws that apply to other kinds of works, such as semiconductor masks.

“The Program” refers to any copyrightable work licensed under this License. Each licensee is addressed as “you”. “Licensees” and “recipients” may be 
individuals or organizations.

To “modify” a work means to copy from or adapt all or part of the work in a fashion requiring copyright permission, other than the making of an 
exact copy. The resulting work is called a “modified version” of the earlier work or a work “based on” the earlier work.

A “covered work” means either the unmodified Program or a work based on the Program.

To “propagate” a work means to do anything with it that, without permission, would make you directly or secondarily liable for infringement under 
applicable copyright law, except executing it on a computer or modifying a private copy. Propagation includes copying, distribution (with or without 
modification), making available to the public, and in some countries other activities as well.

To “convey” a work means any kind of propagation that enables other parties to make or receive copies. Mere interaction with a user through a 
computer network, with no transfer of a copy, is not conveying.

An interactive user interface displays “Appropriate Legal Notices” to the extent that it includes a convenient and prominently visible feature that 
(1) displays an appropriate copyright notice, and (2) tells the user that there is no warranty for the work (except to the extent that warranties 
are provided), that licensees may convey the work under this License, and how to view a copy of this License. If the interface presents a list of 
user commands or options, such as a menu, a prominent item in the list meets this criterion.

1. Source Code.

The “source code” for a work means the preferred form of the work for making modifications to it. “Object code” means any non-source form of a work.

A “Standard Interface” means an interface that either is an official standard defined by a recognized standards body, or, in the case of interfaces 
specified for a particular programming language, one that is widely used among developers working in that language.

The “System Libraries” of an executable work include anything, other than the work as a whole, that (a) is included in the normal form of packaging 
a Major Component, but which is not part of that Major Component, and (b) serves only to enable use of the work with that Major Component, or to 
implement a Standard Interface for which an implementation is available to the public in source code form. A “Major Component”, in this context, 
means a major essential component (kernel, window system, and so on) of the specific operating system (if any) on which the executable work runs, or 
a compiler used to produce the work, or an object code interpreter used to run it.

The “Corresponding Source” for a work in object code form means all the source code needed to generate, install, and (for an executable work) run 
the object code and to modify the work, including scripts to control those activities. However, it does not include the work’s System Libraries, or 
general-purpose tools or generally available free programs which are used unmodified in performing those activities but which are not part of the 
work. For example, Corresponding Source includes interface definition files associated with source files for the work, and the source code for 
shared libraries and dynamically linked subprograms that the work is specifically designed to require, such as by intimate data communication or 
control flow between those subprograms and other parts of the work.

The Corresponding Source need not include anything that users can regenerate automatically from other parts of the Corresponding Source.

The Corresponding Source for a work in source code form is that same work.

2. Basic Permissions.

All rights granted under this License are granted for the term of copyright on the Program, and are irrevocable provided the stated conditions are 
met. This License explicitly affirms your unlimited permission to run the unmodified Program. The output from running a covered work is covered by 
this License only if the output, given its content, constitutes a covered work. This License acknowledges your rights of fair use or other 
equivalent, as provided by copyright law.

You may make, run and propagate covered works that you do not convey, without conditions so long as your license otherwise remains in force. You may 
convey covered works to others for the sole purpose of having them make modifications exclusively for you, or provide you with facilities for 
running those works, provided that you comply with the terms of this License in conveying all material for which you do not control copyright. Those 
thus making or running the covered works for you must do so exclusively on your behalf, under your direction and control, on terms that prohibit 
them from making any copies of your copyrighted material outside their relationship with you.

Conveying under any other circumstances is permitted solely under the conditions stated below. Sublicensing is not allowed; section 10 makes it 
unnecessary.

3. Protecting Users’ Legal Rights From Anti-Circumvention Law.

No covered work shall be deemed part of an effective technological measure under any applicable law fulfilling obligations under article 11 of the 
WIPO copyright treaty adopted on 20 December 1996, or similar laws prohibiting or restricting circumvention of such measures.

When you convey a covered work, you waive any legal power to forbid circumvention of technological measures to the extent such circumvention is 
effected by exercising rights under this License with respect to the covered work, and you disclaim any intention to limit operation or modification 
of the work as a means of enforcing, against the work’s users, your or third parties’ legal rights to forbid circumvention of technological measures.

4. Conveying Verbatim Copies.

You may convey 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; keep intact all notices stating that this License and any non-permissive terms added in accord 
with section 7 apply to the code; keep intact all notices of the absence of any warranty; and give all recipients a copy of this License along with 
the Program.

You may charge any price or no price for each copy that you convey, and you may offer support or warranty protection for a fee.

5. Conveying Modified Source Versions.

You may convey a work based on the Program, or the modifications to produce it from the Program, in the form of source code under the terms of 
section 4, provided that you also meet all of these conditions:

The work must carry prominent notices stating that you modified it, and giving a relevant date.

The work must carry prominent notices stating that it is released under this License and any conditions added under section 7. This requirement 
modifies the requirement in section 4 to “keep intact all notices”.

You must license the entire work, as a whole, under this License to anyone who comes into possession of a copy. This License will therefore apply, 
along with any applicable section 7 additional terms, to the whole of the work, and all its parts, regardless of how they are packaged. This License 
gives no permission to license the work in any other way, but it does not invalidate such permission if you have separately received it.

If the work has interactive user interfaces, each must display Appropriate Legal Notices; however, if the Program has interactive interfaces that do 
not display Appropriate Legal Notices, your work need not make them do so.

A compilation of a covered work with other separate and independent works, which are not by their nature extensions of the covered work, and which 
are not combined with it such as to form a larger program, in or on a volume of a storage or distribution medium, is called an “aggregate” if the 
compilation and its resulting copyright are not used to limit the access or legal rights of the compilation’s users beyond what the individual works 
permit. Inclusion of a covered work in an aggregate does not cause this License to apply to the other parts of the aggregate.

6. Conveying Non-Source Forms.

You may convey a covered work in object code form under the terms of sections 4 and 5, provided that you also convey the machine-readable 
Corresponding Source under the terms of this License, in one of these ways:

Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by the Corresponding Source 
fixed on a durable physical medium customarily used for software interchange.

Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by a written offer, valid for 
at least three years and valid for as long as you offer spare parts or customer support for that product model, to give anyone who possesses the 
object code either (1) a copy of the Corresponding Source for all the software in the product that is covered by this License, on a durable physical 
medium customarily used for software interchange, for a price no more than your reasonable cost of physically performing this conveying of source, 
or (2) access to copy the Corresponding Source from a network server at no charge.

Convey individual copies of the object code with a copy of the written offer to provide the Corresponding Source. This alternative is allowed only 
occasionally and noncommercially, and only if you received the object code with such an offer, in accord with subsection 6b.

Convey the object code by offering access from a designated place (gratis or for a charge), and offer equivalent access to the Corresponding Source 
in the same way through the same place at no further charge. You need not require recipients to copy the Corresponding Source along with the object 
code. If the place to copy the object code is a network server, the Corresponding Source may be on a different server (operated by you or a third 
party) that supports equivalent copying facilities, provided you maintain clear directions next to the object code saying where to find the 
Corresponding Source. Regardless of what server hosts the Corresponding Source, you remain obligated to ensure that it is available for as long as 
needed to satisfy these requirements.

Convey the object code using peer-to-peer transmission, provided you inform other peers where the object code and Corresponding Source of the work 
are being offered to the general public at no charge under subsection 6d.

A separable portion of the object code, whose source code is excluded from the Corresponding Source as a System Library, need not be included in 
conveying the object code work.

A “User Product” is either (1) a “consumer product”, which means any tangible personal property which is normally used for personal, family, or 
household purposes, or (2) anything designed or sold for incorporation into a dwelling. In determining whether a product is a consumer product, 
doubtful cases shall be resolved in favor of coverage. For a particular product received by a particular user, “normally used” refers to a typical 
or common use of that class of product, regardless of the status of the particular user or of the way in which the particular user actually uses, or 
expects or is expected to use, the product. A product is a consumer product regardless of whether the product has substantial commercial, industrial 
or non-consumer uses, unless such uses represent the only significant mode of use of the product.

“Installation Information” for a User Product means any methods, procedures, authorization keys, or other information required to install and 
execute modified versions of a covered work in that User Product from a modified version of its Corresponding Source. The information must suffice 
to ensure that the continued functioning of the modified object code is in no case prevented or interfered with solely because modification has been 
made.

If you convey an object code work under this section in, or with, or specifically for use in, a User Product, and the conveying occurs as part of a 
transaction in which the right of possession and use of the User Product is transferred to the recipient in perpetuity or for a fixed term 
(regardless of how the transaction is characterized), the Corresponding Source conveyed under this section must be accompanied by the Installation 
Information. But this requirement does not apply if neither you nor any third party retains the ability to install modified object code on the User 
Product (for example, the work has been installed in ROM).

The requirement to provide Installation Information does not include a requirement to continue to provide support service, warranty, or updates for 
a work that has been modified or installed by the recipient, or for the User Product in which it has been modified or installed. Access to a network 
may be denied when the modification itself materially and adversely affects the operation of the network or violates the rules and protocols for 
communication across the network.

Corresponding Source conveyed, and Installation Information provided, in accord with this section must be in a format that is publicly documented 
(and with an implementation available to the public in source code form), and must require no special password or key for unpacking, reading or 
copying.

7. Additional Terms.

“Additional permissions” are terms that supplement the terms of this License by making exceptions from one or more of its conditions. Additional 
permissions that are applicable to the entire Program shall be treated as though they were included in this License, to the extent that they are 
valid under applicable law. If additional permissions apply only to part of the Program, that part may be used separately under those permissions, 
but the entire Program remains governed by this License without regard to the additional permissions.

When you convey a copy of a covered work, you may at your option remove any additional permissions from that copy, or from any part of it. 
(Additional permissions may be written to require their own removal in certain cases when you modify the work.) You may place additional permissions 
on material, added by you to a covered work, for which you have or can give appropriate copyright permission.

Notwithstanding any other provision of this License, for material you add to a covered work, you may (if authorized by the copyright holders of that 
material) supplement the terms of this License with terms:

Disclaiming warranty or limiting liability differently from the terms of sections 15 and 16 of this License; or

Requiring preservation of specified reasonable legal notices or author attributions in that material or in the Appropriate Legal Notices displayed 
by works containing it; or

Prohibiting misrepresentation of the origin of that material, or requiring that modified versions of such material be marked in reasonable ways as 
different from the original version; or

Limiting the use for publicity purposes of names of licensors or authors of the material; or

Declining to grant rights under trademark law for use of some trade names, trademarks, or service marks; or

Requiring indemnification of licensors and authors of that material by anyone who conveys the material (or modified versions of it) with contractual 
assumptions of liability to the recipient, for any liability that these contractual assumptions directly impose on those licensors and authors.

All other non-permissive additional terms are considered “further restrictions” within the meaning of section 10. If the Program as you received it, 
or any part of it, contains a notice stating that it is governed by this License along with a term that is a further restriction, you may remove 
that term. If a license document contains a further restriction but permits relicensing or conveying under this License, you may add to a covered 
work material governed by the terms of that license document, provided that the further restriction does not survive such relicensing or conveying.

If you add terms to a covered work in accord with this section, you must place, in the relevant source files, a statement of the additional terms 
that apply to those files, or a notice indicating where to find the applicable terms.

Additional terms, permissive or non-permissive, may be stated in the form of a separately written license, or stated as exceptions; the above 
requirements apply either way.

8. Termination.

You may not propagate or modify a covered work except as expressly provided under this License. Any attempt otherwise to propagate or modify it is 
void, and will automatically terminate your rights under this License (including any patent licenses granted under the third paragraph of section 11).

However, if you cease all violation of this License, then your license from a particular copyright holder is reinstated (a) provisionally, unless 
and until the copyright holder explicitly and finally terminates your license, and (b) permanently, if the copyright holder fails to notify you of 
the violation by some reasonable means prior to 60 days after the cessation.

Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you of the violation by some 
reasonable means, this is the first time you have received notice of violation of this License (for any work) from that copyright holder, and you 
cure the violation prior to 30 days after your receipt of the notice.

Termination of your rights under this section does not terminate the licenses of parties who have received copies or rights from you under this 
License. If your rights have been terminated and not permanently reinstated, you do not qualify to receive new licenses for the same material under 
section 10.

9. Acceptance Not Required for Having Copies.

You are not required to accept this License in order to receive or run a copy of the Program. Ancillary propagation of a covered work occurring 
solely as a consequence of using peer-to-peer transmission to receive a copy likewise does not require acceptance. However, nothing other than this 
License grants you permission to propagate or modify any covered work. These actions infringe copyright if you do not accept this License. 
Therefore, by modifying or propagating a covered work, you indicate your acceptance of this License to do so.

10. Automatic Licensing of Downstream Recipients.

Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run, modify and propagate that 
work, subject to this License. You are not responsible for enforcing compliance by third parties with this License.

An “entity transaction” is a transaction transferring control of an organization, or substantially all assets of one, or subdividing an 
organization, or merging organizations. If propagation of a covered work results from an entity transaction, each party to that transaction who 
receives a copy of the work also receives whatever licenses to the work the party’s predecessor in interest had or could give under the previous 
paragraph, plus a right to possession of the Corresponding Source of the work from the predecessor in interest, if the predecessor has it or can get 
it with reasonable efforts.

You may not impose any further restrictions on the exercise of the rights granted or affirmed under this License. For example, you may not impose a 
license fee, royalty, or other charge for exercise of rights granted under this License, and you may not initiate litigation (including a 
cross-claim or counterclaim in a lawsuit) alleging that any patent claim is infringed by making, using, selling, offering for sale, or importing the 
Program or any portion of it.

11. Patents.

A “contributor” is a copyright holder who authorizes use under this License of the Program or a work on which the Program is based. The work thus 
licensed is called the contributor’s “contributor version”.

A contributor’s “essential patent claims” are all patent claims owned or controlled by the contributor, whether already acquired or hereafter 
acquired, that would be infringed by some manner, permitted by this License, of making, using, or selling its contributor version, but do not 
include claims that would be infringed only as a consequence of further modification of the contributor version. For purposes of this definition, 
“control” includes the right to grant patent sublicenses in a manner consistent with the requirements of this License.

Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the contributor’s essential patent claims, to make, use, 
sell, offer for sale, import and otherwise run, modify and propagate the contents of its contributor version.

In the following three paragraphs, a “patent license” is any express agreement or commitment, however denominated, not to enforce a patent (such as 
an express permission to practice a patent or covenant not to sue for patent infringement). To “grant” such a patent license to a party means to 
make such an agreement or commitment not to enforce a patent against the party.

If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of the work is not available for anyone to copy, 
free of charge and under the terms of this License, through a publicly available network server or other readily accessible means, then you must 
either (1) cause the Corresponding Source to be so available, or (2) arrange to deprive yourself of the benefit of the patent license for this 
particular work, or (3) arrange, in a manner consistent with the requirements of this License, to extend the patent license to downstream 
recipients. “Knowingly relying” means you have actual knowledge that, but for the patent license, your conveying the covered work in a country, or 
your recipient’s use of the covered work in a country, would infringe one or more identifiable patents in that country that you have reason to 
believe are valid.

If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate by procuring conveyance of, a covered work, and 
grant a patent license to some of the parties receiving the covered work authorizing them to use, propagate, modify or convey a specific copy of the 
covered work, then the patent license you grant is automatically extended to all recipients of the covered work and works based on it.

A patent license is “discriminatory” if it does not include within the scope of its coverage, prohibits the exercise of, or is conditioned on the 
non-exercise of one or more of the rights that are specifically granted under this License. You may not convey a covered work if you are a party to 
an arrangement with a third party that is in the business of distributing software, under which you make payment to the third party based on the 
extent of your activity of conveying the work, and under which the third party grants, to any of the parties who would receive the covered work from 
you, a discriminatory patent license (a) in connection with copies of the covered work conveyed by you (or copies made from those copies), or (b) 
primarily for and in connection with specific products or compilations that contain the covered work, unless you entered into that arrangement, or 
that patent license was granted, prior to 28 March 2007.

Nothing in this License shall be construed as excluding or limiting any implied license or other defenses to infringement that may otherwise be 
available to you under applicable patent law.

12. No Surrender of Others’ Freedom.

If 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 convey a covered work so as to satisfy simultaneously your obligations under this License and 
any other pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to terms that obligate you to collect 
a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be 
to refrain entirely from conveying the Program.

13. Use with the GNU Affero General Public License.

Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of 
the GNU Affero General Public License into a single combined work, and to convey the resulting work. The terms of this License will continue to 
apply to the part which is the covered work, but the special requirements of the GNU Affero General Public License, section 13, concerning 
interaction through a network will apply to the combination as such.

14. Revised Versions of this License.

The Free Software Foundation may publish revised and/or new versions of the GNU 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 that a certain numbered version of the GNU General Public License 
“or any later version” applies to it, you have the option of following the terms and conditions either of that numbered version or of any later 
version published by the Free Software Foundation. If the Program does not specify a version number of the GNU General Public License, you may 
choose any version ever published by the Free Software Foundation.

If the Program specifies that a proxy can decide which future versions of the GNU General Public License can be used, that proxy’s public statement 
of acceptance of a version permanently authorizes you to choose that version for the Program.

Later license versions may give you additional or different permissions. However, no additional obligations are imposed on any author or copyright 
holder as a result of your choosing to follow a later version.

15. Disclaimer of Warranty.

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.

16. Limitation of Liability.

IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 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.

17. Interpretation of Sections 15 and 16.

If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing 
courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a 
warranty or assumption of liability accompanies a copy of the Program in return for a fee.

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 state 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 3 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, see http://www.gnu.org/licenses/.
  
Also add information on how to contact you by electronic and paper mail.

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

program Copyright (C) year name of author
This program 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, your program’s commands 
might be different; for a GUI interface, you would use an “about box”.

You should also get your employer (if you work as a programmer) or school, if any, to sign a “copyright disclaimer” for the program, if necessary. 
For more information on this, and how to apply and follow the GNU GPL, see http://www.gnu.org/licenses/.

The GNU 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. But first, please read http://www.gnu.org/philosophy/why-not-lgpl.html.

==========================================================================================================================

GCC RUNTIME LIBRARY EXCEPTION

Version 3.1, 31 March 2009

Copyright (C) 2009 Free Software Foundation, Inc.

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.