c825f470cb
redbear-ci / check (push) Has been cancelled
kf6-kwallet's kwalletbackend hard-requires LibGcrypt 1.5.0 for PBKDF2 key derivation and the GPG-backed wallet format. Vendor both libraries under the full-fork model (committed source/, offline-reproducible) and add libgcrypt to kf6-kwallet's dependencies. Release tarballs ship a pre-generated configure and a config.sub that already recognises the *-redox triple, so no autotools regeneration is needed at cook time. libgpg-error supplies a generic pthread-backed gpgrt_lock_t for Redox via its build script; the test-only redox.patch (tms/times stub) is baked into libgcrypt's source and kept alongside for future version bumps. Promoted from the stale recipes/wip copies (now .disabled).
1323 lines
61 KiB
Plaintext
1323 lines
61 KiB
Plaintext
This is gpgrt.info, produced by makeinfo version 6.8 from gpgrt.texi.
|
||
|
||
This manual is for Libgpg-error (version 1.55, 7 November 2023), which
|
||
is a library for code used by all GnuPG related packages.
|
||
|
||
Copyright (C) 2014, 2022 g10 Code GmbH
|
||
|
||
Permission is granted to copy, distribute and/or modify this
|
||
document 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. The text of the
|
||
license can be found in the section entitled "GNU General Public
|
||
License".
|
||
INFO-DIR-SECTION Libraries
|
||
START-INFO-DIR-ENTRY
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* libgpg-error: (gpgrt). Error codes and common code for GnuPG.
|
||
END-INFO-DIR-ENTRY
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||
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||
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File: gpgrt.info, Node: Top, Next: Introduction, Up: (dir)
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||
|
||
The Libgpg-error Library
|
||
************************
|
||
|
||
This manual is for Libgpg-error (version 1.55, 7 November 2023), which
|
||
is a library for code used by all GnuPG related packages.
|
||
|
||
Copyright (C) 2014, 2022 g10 Code GmbH
|
||
|
||
Permission is granted to copy, distribute and/or modify this
|
||
document 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. The text of the
|
||
license can be found in the section entitled "GNU General Public
|
||
License".
|
||
|
||
* Menu:
|
||
|
||
* Introduction:: What is Libgpg-error.
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||
* Preparation:: What you should do before using the library.
|
||
* Generalities:: General library functions and data types.
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||
* Tools:: Utility tools
|
||
|
||
Appendices
|
||
|
||
* Library Copying:: The GNU Lesser General Public License
|
||
says how you can copy and share Libgpg-error.
|
||
* Copying:: The GNU General Public License says how you
|
||
can copy and share some parts of Libgpg-error.
|
||
|
||
Indices
|
||
|
||
* Concept Index:: Index of concepts and programs.
|
||
* Function and Data Index:: Index of functions, variables and data types.
|
||
|
||
|
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File: gpgrt.info, Node: Introduction, Next: Preparation, Prev: Top, Up: Top
|
||
|
||
1 Introduction
|
||
**************
|
||
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Libgpg-error is a library to provide error codes for GnuPG and relates
|
||
software as well as some other general purpose functions. It is planned
|
||
to eventually rename this library to "gpgrt" (for GnuPG RunTime).
|
||
|
||
* Menu:
|
||
|
||
* Getting Started:: How to use this manual.
|
||
* Features:: A glance at Libgpg-error’s features.
|
||
* Overview:: Overview about the library.
|
||
|
||
|
||
File: gpgrt.info, Node: Getting Started, Next: Features, Up: Introduction
|
||
|
||
1.1 Getting Started
|
||
===================
|
||
|
||
This manual documents the Libgpg-error library application programming
|
||
interface (API). The goal is to that all functions and data types
|
||
provided by the library are explained. However, for now this is only a
|
||
stub and not very useful.
|
||
|
||
|
||
File: gpgrt.info, Node: Features, Next: Overview, Prev: Getting Started, Up: Introduction
|
||
|
||
1.2 Features
|
||
============
|
||
|
||
TBD
|
||
|
||
|
||
File: gpgrt.info, Node: Overview, Prev: Features, Up: Introduction
|
||
|
||
1.3 Overview
|
||
============
|
||
|
||
The Libgpg-error library is fully thread-safe, where it makes sense to
|
||
be thread-safe.
|
||
|
||
TBD
|
||
|
||
|
||
File: gpgrt.info, Node: Preparation, Next: Generalities, Prev: Introduction, Up: Top
|
||
|
||
2 Preparation
|
||
*************
|
||
|
||
To use Libgpg-error, you have to perform some changes to your sources
|
||
and the build system. The necessary changes are small and explained in
|
||
the following sections. At the end of this chapter, it is described how
|
||
the library is initialized, and how the requirements of the library are
|
||
verified.
|
||
|
||
* Menu:
|
||
|
||
* Header:: What header file you need to include.
|
||
* Building sources:: How to build sources using the library.
|
||
* Building sources using Automake:: How to build sources with the help of Automake.
|
||
* Initializing the library:: How to initialize the library.
|
||
* Multi-Threading:: How Libgpg-error can be used in a MT environment.
|
||
|
||
|
||
File: gpgrt.info, Node: Header, Next: Building sources, Up: Preparation
|
||
|
||
2.1 Header
|
||
==========
|
||
|
||
All interfaces (data types and functions) of the library are defined in
|
||
the header file 'gpg-error.h'. You must include this in all source
|
||
files using the library, either directly or through some other header
|
||
file, like this:
|
||
|
||
#include <gpg-error.h>
|
||
|
||
Note well that the header file is platform specific and may only be
|
||
used on the platform for which it has been build.
|
||
|
||
The name space of Libgpg-error is 'gpg_*' and 'gpgrt*' for function
|
||
and type names and 'GPG_*' and 'GPGRT_*' for other symbols. In addition
|
||
the same name prefixes with one prepended underscore are reserved for
|
||
internal use and should never be used by an application.
|
||
|
||
Certain parts of gpg-error.h may be included by defining these macros:
|
||
|
||
'GPG_ERR_ENABLE_GETTEXT_MACROS'
|
||
Define to provide macros to map the internal gettext API to
|
||
standard names. This has only an effect on Windows platforms.
|
||
|
||
'GPGRT_ENABLE_ES_MACROS'
|
||
Define to provide "es_" macros for the estream functions.
|
||
|
||
|
||
File: gpgrt.info, Node: Building sources, Next: Building sources using Automake, Prev: Header, Up: Preparation
|
||
|
||
2.2 Building sources
|
||
====================
|
||
|
||
If you want to compile a source file including the 'gpg-error.h' header
|
||
file, you must make sure that the compiler can find it in the directory
|
||
hierarchy. This is accomplished by adding the path to the directory in
|
||
which the header file is located to the compilers include file search
|
||
path (via the '-I' option).
|
||
|
||
However, the path to the include file is determined at the time the
|
||
source is configured. To solve this problem, Libgpg-error ships with a
|
||
pkg-config file: gpg-error.pc.
|
||
|
||
The options that need to be added to the compiler invocation at
|
||
compile time are output by the '--cflags' option to 'pkg-config'. The
|
||
following example shows how it can be used at the command line:
|
||
|
||
gcc -c foo.c $(pkg-config --cflags gpg-error)
|
||
|
||
Adding the output of 'pkg-config --cflags gpg-error' to the
|
||
compiler’s command line will ensure that the compiler can find the
|
||
Libgpg-error header file.
|
||
|
||
A similar problem occurs when linking the program with the library.
|
||
Again, the compiler has to find the library files. For this to work,
|
||
the path to the library files has to be added to the library search path
|
||
(via the '-L' option). For this, the option '--libs' to 'pkg-config'
|
||
can be used. The example shows how to link 'foo.o' with the
|
||
Libgpg-error library to a program 'foo'.
|
||
|
||
gcc -o foo foo.o $(pkg-config --libs gpg-error)
|
||
|
||
Of course you can also combine both examples to a single command by
|
||
specifying both options to 'pkg-config':
|
||
|
||
gcc -o foo foo.c $(pkg-config --cflags --libs gpg-error)
|
||
|
||
For GnuPG and its friends, which are usually needed to be built
|
||
earlier in a stage of OS bootstrap, Libgpg-error ships the small helper
|
||
program 'gpgrt-config'. This helper program is a sort of 'pkg-config'
|
||
replacement for limited environment, supporting cross compilation, as
|
||
well as multilib and multi-arch installation. Note that 'gpgrt-config'
|
||
is not for general use for other programs. 'gpgrt-config' requires
|
||
invocation with the option '--lib=' so that it locates the appropriate
|
||
path to 'gpg-error.pc'.
|
||
|
||
|
||
File: gpgrt.info, Node: Building sources using Automake, Next: Initializing the library, Prev: Building sources, Up: Preparation
|
||
|
||
2.3 Building sources using Automake
|
||
===================================
|
||
|
||
It is much easier if you use GNU Automake instead of writing your own
|
||
Makefiles. If you do that, you do not have to worry about finding and
|
||
invoking the 'pkg-config' or 'gpgrt-config' script at all. Libgpg-error
|
||
provides an extension to Automake that does all the work for you. That
|
||
is offered by 'gpg-error.m4'.
|
||
|
||
-- Macro: AM_PATH_GPG_ERROR ([MINIMUM-VERSION], [ACTION-IF-FOUND],
|
||
[ACTION-IF-NOT-FOUND])
|
||
Check whether Libgpg-error (at least version MINIMUM-VERSION, if
|
||
given) exists on the host system. If it is found, execute
|
||
ACTION-IF-FOUND, otherwise do ACTION-IF-NOT-FOUND, if given.
|
||
|
||
Additionally, the function defines 'GPG_ERROR_CFLAGS' to the flags
|
||
needed for compilation of the program to find the 'gpg-error.h'
|
||
header file, and 'GPG_ERROR_LIBS' to the linker flags needed to
|
||
link the program to the Libgpg-error library.
|
||
|
||
This macro searches for 'gpgrt-config' along the PATH.
|
||
|
||
You can use the defined Autoconf variables like this in your
|
||
'Makefile.am':
|
||
|
||
AM_CPPFLAGS = $(GPG_ERROR_CFLAGS)
|
||
LDADD = $(GPG_ERROR_LIBS)
|
||
|
||
|
||
File: gpgrt.info, Node: Initializing the library, Next: Multi-Threading, Prev: Building sources using Automake, Up: Preparation
|
||
|
||
2.4 Initializing the library
|
||
============================
|
||
|
||
Before the library can be used, it should initialize itself. This is
|
||
achieved by invoking the function 'gpgrt_check_version' described below.
|
||
|
||
Also, it is often desirable to check that the version of Libgpg-error
|
||
used is indeed one which fits all requirements. Even with binary
|
||
compatibility, new features may have been introduced, but due to problem
|
||
with the dynamic linker an old version may actually be used. So you may
|
||
want to check that the version is okay right after program startup.
|
||
|
||
-- Function: const char * gpgrt_check_version (const char *REQ_VERSION)
|
||
|
||
The function 'gpgrt_check_version' initializes some subsystems used
|
||
by Libgpg-error and must be invoked before any other function in
|
||
the library. *Note Multi-Threading::.
|
||
|
||
Furthermore, this function returns the version number of the
|
||
library. It can also verify that the version number is higher than
|
||
a certain required version number REQ_VERSION, if this value is not
|
||
a null pointer.
|
||
|
||
|
||
File: gpgrt.info, Node: Multi-Threading, Prev: Initializing the library, Up: Preparation
|
||
|
||
2.5 Multi-Threading
|
||
===================
|
||
|
||
TBD.
|
||
|
||
|
||
File: gpgrt.info, Node: Generalities, Next: Tools, Prev: Preparation, Up: Top
|
||
|
||
3 Generalities
|
||
**************
|
||
|
||
TBD. (Description of the error function may be taken from Libgcrypt.)
|
||
|
||
|
||
File: gpgrt.info, Node: Tools, Next: Library Copying, Prev: Generalities, Up: Top
|
||
|
||
4 Tools
|
||
*******
|
||
|
||
* Menu:
|
||
|
||
* gpg-error-config:: Print required compiler flags
|
||
* gpgrt-config:: Helper tool for querying installed libraries
|
||
|
||
|
||
File: gpgrt.info, Node: gpg-error-config, Next: gpgrt-config, Up: Tools
|
||
|
||
4.1 Print required compiler flags
|
||
=================================
|
||
|
||
'gpg-error-config' is a tool that is used to configure to determine the
|
||
compiler and linker flags that should be used to compile and link
|
||
programs that use Libgpg-error.
|
||
|
||
This tool is now obsolete. Instead, please use pkg-config with
|
||
gpg-error.pc for your new program, or use gpg-error.m4 which uses
|
||
gpgrt-config and gpg-error.pc internally.
|
||
|
||
'gpg-error-config' accepts the following options:
|
||
|
||
'--mt'
|
||
Provide output appropriate for multithreaded programs. '--mt' is
|
||
only useful when combined with other options, and must be the first
|
||
option if present.
|
||
|
||
'--version'
|
||
Print the currently installed version of Libgpg-error on the
|
||
standard output.
|
||
|
||
'--libs'
|
||
Print the linker flags that are necessary to link a program using
|
||
Libgpg-error.
|
||
|
||
'--cflags'
|
||
Print the compiler flags that are necessary to compile a program
|
||
using Libgpg-error.
|
||
|
||
'--prefix=PREFIX'
|
||
If specified, use PREFIX instead of the installation prefix that
|
||
Libgpg-error was built with when computing the output for the
|
||
'--cflags' and '--libs' options. This option is also used for the
|
||
exec prefix if '--exec-prefix' was not specified. This option must
|
||
be specified before any '--libs' or '--cflags' options.
|
||
|
||
'--exec-prefix=PREFIX'
|
||
If specified, use PREFIX instead of the installation exec prefix
|
||
that Libgpg-error was built with when computing the output for the
|
||
'--cflags' and '--libs' options. This option must be specified
|
||
before any '--libs' or '--cflags' options.
|
||
|
||
|
||
File: gpgrt.info, Node: gpgrt-config, Prev: gpg-error-config, Up: Tools
|
||
|
||
4.2 gpgrt-config - Helper tool for querying installed libraries.
|
||
================================================================
|
||
|
||
'gpgrt-config' is a script tool that is used by the autoconf macros
|
||
shipped with gnupg software (e.g., AM_PATH_GPG_ERROR and AM_PATH_GPGME)
|
||
to determine the compiler and linker flags that should be used to
|
||
compile and link programs that use the specific library (e.g.,
|
||
libgpg-error or libgpgme). 'gpgrt-config' uses pkg-config .pc files as
|
||
data source.
|
||
|
||
Apart from options 'gpgrt-config' accepts a single argument 'module'
|
||
specifying the basename (without the ".pc"-suffix) of the pkg-config
|
||
file to be used as input. 'module' will default to 'gpg-error' if it is
|
||
not specified.
|
||
|
||
'gpgrt-config' accepts the following options:
|
||
|
||
'--libdir=LIBDIR'
|
||
Parent directory path of pkgconfig file search path. e.g.,
|
||
'gpgrt-config --libdir=/usr/lib --exists gpgme' will parse
|
||
'/usr/lib/pkgconfig/gpgme.pc'.
|
||
|
||
'--exists'
|
||
Test whether the pkg-config file 'module.pc' exist and exits with
|
||
success or error accordingly.
|
||
|
||
'--modversion'
|
||
Print the currently installed version of 'module' on the standard
|
||
output.
|
||
|
||
'--libs'
|
||
Print the linker flags that are necessary to link a program using
|
||
the 'module'.
|
||
|
||
'--cflags'
|
||
Print the compiler flags that are necessary to compile a program
|
||
using the 'module'.
|
||
|
||
'--static'
|
||
Modifies output if linking statically instead of dynamically.
|
||
|
||
'--variable=VARNAME'
|
||
Output variable VARNAME from the module's pkg-config file.
|
||
|
||
'gpgrt-config' is tried to be compatible to pkg-config, and to support
|
||
cross build well, but it is not intended to be a replacement.
|
||
|
||
|
||
File: gpgrt.info, Node: Library Copying, Next: Copying, Prev: Tools, Up: Top
|
||
|
||
GNU Lesser General Public License
|
||
*********************************
|
||
|
||
Version 2.1, February 1999
|
||
|
||
Copyright (C) 1991, 1999 Free Software Foundation, Inc.
|
||
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
|
||
|
||
Everyone is permitted to copy and distribute verbatim copies
|
||
of this license document, but changing it is not allowed.
|
||
|
||
[This is the first released version of the Lesser GPL. It also counts
|
||
as the successor of the GNU Library Public License, version 2, hence the
|
||
version number 2.1.]
|
||
|
||
Preamble
|
||
========
|
||
|
||
The licenses for most software are designed to take away your freedom to
|
||
share and change it. By contrast, the GNU General Public Licenses are
|
||
intended to guarantee your freedom to share and change free software--to
|
||
make sure the software is free for all its users.
|
||
|
||
This license, the Lesser General Public License, applies to some
|
||
specially designated software--typically libraries--of the Free Software
|
||
Foundation and other authors who decide to use it. You can use it too,
|
||
but we suggest you first think carefully about whether this license or
|
||
the ordinary General Public License is the better strategy to use in any
|
||
particular case, based on the explanations below.
|
||
|
||
When we speak of free software, we are referring to freedom of use,
|
||
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 and use pieces of it
|
||
in new free programs; and that you are informed that you can do these
|
||
things.
|
||
|
||
To protect your rights, we need to make restrictions that forbid
|
||
distributors to deny you these rights or to ask you to surrender these
|
||
rights. These restrictions translate to certain responsibilities for
|
||
you if you distribute copies of the library or if you modify it.
|
||
|
||
For example, if you distribute copies of the library, whether gratis
|
||
or for a fee, you must give the recipients all the rights that we gave
|
||
you. You must make sure that they, too, receive or can get the source
|
||
code. If you link other code with the library, you must provide
|
||
complete object files to the recipients, so that they can relink them
|
||
with the library after making changes to the library and recompiling it.
|
||
And you must show them these terms so they know their rights.
|
||
|
||
We protect your rights with a two-step method: (1) we copyright the
|
||
library, and (2) we offer you this license, which gives you legal
|
||
permission to copy, distribute and/or modify the library.
|
||
|
||
To protect each distributor, we want to make it very clear that there
|
||
is no warranty for the free library. Also, if the library is modified
|
||
by someone else and passed on, the recipients should know that what they
|
||
have is not the original version, so that the original author's
|
||
reputation will not be affected by problems that might be introduced by
|
||
others.
|
||
|
||
Finally, software patents pose a constant threat to the existence of
|
||
any free program. We wish to make sure that a company cannot
|
||
effectively restrict the users of a free program by obtaining a
|
||
restrictive license from a patent holder. Therefore, we insist that any
|
||
patent license obtained for a version of the library must be consistent
|
||
with the full freedom of use specified in this license.
|
||
|
||
Most GNU software, including some libraries, is covered by the
|
||
ordinary GNU General Public License. This license, the GNU Lesser
|
||
General Public License, applies to certain designated libraries, and is
|
||
quite different from the ordinary General Public License. We use this
|
||
license for certain libraries in order to permit linking those libraries
|
||
into non-free programs.
|
||
|
||
When a program is linked with a library, whether statically or using
|
||
a shared library, the combination of the two is legally speaking a
|
||
combined work, a derivative of the original library. The ordinary
|
||
General Public License therefore permits such linking only if the entire
|
||
combination fits its criteria of freedom. The Lesser General Public
|
||
License permits more lax criteria for linking other code with the
|
||
library.
|
||
|
||
We call this license the "Lesser" General Public License because it
|
||
does _Less_ to protect the user's freedom than the ordinary General
|
||
Public License. It also provides other free software developers Less of
|
||
an advantage over competing non-free programs. These disadvantages are
|
||
the reason we use the ordinary General Public License for many
|
||
libraries. However, the Lesser license provides advantages in certain
|
||
special circumstances.
|
||
|
||
For example, on rare occasions, there may be a special need to
|
||
encourage the widest possible use of a certain library, so that it
|
||
becomes a de-facto standard. To achieve this, non-free programs must be
|
||
allowed to use the library. A more frequent case is that a free library
|
||
does the same job as widely used non-free libraries. In this case,
|
||
there is little to gain by limiting the free library to free software
|
||
only, so we use the Lesser General Public License.
|
||
|
||
In other cases, permission to use a particular library in non-free
|
||
programs enables a greater number of people to use a large body of free
|
||
software. For example, permission to use the GNU C Library in non-free
|
||
programs enables many more people to use the whole GNU operating system,
|
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as well as its variant, the GNU/Linux operating system.
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How to Apply These Terms to Your New Libraries
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==============================================
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Yoyodyne, Inc., hereby disclaims all copyright interest in the library
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`Frob' (a library for tweaking knobs) written by James Random Hacker.
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SIGNATURE OF TY COON, 1 April 1990
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Ty Coon, President of Vice
|
||
|
||
That's all there is to it!
|
||
|
||
|
||
File: gpgrt.info, Node: Copying, Next: Concept Index, Prev: Library Copying, Up: Top
|
||
|
||
GNU General Public License
|
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**************************
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|
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Version 2, June 1991
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Copyright (C) 1989, 1991 Free Software Foundation, Inc.
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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Everyone is permitted to copy and distribute verbatim copies
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Preamble
|
||
========
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The licenses for most software are designed to take away your freedom to
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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.
|
||
|
||
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
|
||
|
||
1. 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.
|
||
|
||
2. 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.
|
||
|
||
3. 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.
|
||
|
||
4. 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. (This alternative is
|
||
allowed only for noncommercial distribution and only if you
|
||
received the program in object code or executable form with
|
||
such an offer, in accord with Subsection b above.)
|
||
|
||
The source code for a work means the preferred form of the work for
|
||
making modifications to it. For an executable work, complete
|
||
source code means all the source code for all modules it contains,
|
||
plus any associated interface definition files, plus the scripts
|
||
used to control compilation and installation of the executable.
|
||
However, as a special exception, the source code distributed need
|
||
not include anything that is normally distributed (in either source
|
||
or binary form) with the major components (compiler, kernel, and so
|
||
on) of the operating system on which the executable runs, unless
|
||
that component itself accompanies the executable.
|
||
|
||
If distribution of executable or object code is made by offering
|
||
access to copy from a designated place, then offering equivalent
|
||
access to copy the source code from the same place counts as
|
||
distribution of the source code, even though third parties are not
|
||
compelled to copy the source along with the object code.
|
||
|
||
5. You may not copy, modify, sublicense, or distribute the Program
|
||
except as expressly provided under this License. Any attempt
|
||
otherwise to copy, modify, sublicense or distribute the Program is
|
||
void, and will automatically terminate your rights under this
|
||
License. However, parties who have received copies, or rights,
|
||
from you under this License will not have their licenses terminated
|
||
so long as such parties remain in full compliance.
|
||
|
||
6. You are not required to accept this License, since you have not
|
||
signed it. However, nothing else grants you permission to modify
|
||
or distribute the Program or its derivative works. 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.
|
||
|
||
7. 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.
|
||
|
||
8. 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.
|
||
|
||
If any portion of this section is held invalid or unenforceable
|
||
under any particular circumstance, the balance of the section is
|
||
intended to apply and the section as a whole is intended to apply
|
||
in other circumstances.
|
||
|
||
It is not the purpose of this section to induce you to infringe any
|
||
patents or other property right claims or to contest validity of
|
||
any such claims; this section has the sole purpose of protecting
|
||
the integrity of the free software distribution system, which is
|
||
implemented by public license practices. Many people have made
|
||
generous contributions to the wide range of software distributed
|
||
through that system in reliance on consistent application of that
|
||
system; it is up to the author/donor to decide if he or she is
|
||
willing to distribute software through any other system and a
|
||
licensee cannot impose that choice.
|
||
|
||
This section is intended to make thoroughly clear what is believed
|
||
to be a consequence of the rest of this License.
|
||
|
||
9. 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.
|
||
|
||
10. 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.
|
||
|
||
11. 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
|
||
|
||
12. 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.
|
||
|
||
13. 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.
|
||
|
||
ONE LINE TO GIVE THE PROGRAM'S NAME AND AN IDEA OF WHAT IT DOES.
|
||
Copyright (C) 19YY 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 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.,
|
||
59 Temple Place, Suite 330, Boston, MA 02111-1307, 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) 19YY 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.
|
||
|
||
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 Library General Public License instead of this License.
|
||
|
||
|
||
File: gpgrt.info, Node: Concept Index, Next: Function and Data Index, Prev: Copying, Up: Top
|
||
|
||
Concept Index
|
||
*************
|
||
|
||
|