Add README and COPYING

Julien LepillerSun Mar 14 18:41:46+0100 2021

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Add README and COPYING

COPYING unknown status 1

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                    GNU GENERAL PUBLIC LICENSE
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                       Version 3, 29 June 2007
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 Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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 Everyone is permitted to copy and distribute verbatim copies
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 of this license document, but changing it is not allowed.
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                            Preamble
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  The GNU General Public License is a free, copyleft license for
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software and other kinds of works.
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  The licenses for most software and other practical works are designed
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the GNU General Public License is intended to guarantee your freedom to
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share and change all versions of a program--to make sure it remains free
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software for all its users.  We, the Free Software Foundation, use the
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GNU General Public License for most of our software; it applies also to
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any other work released this way by its authors.  You can apply it to
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your programs, too.
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  When we speak of free software, we are referring to freedom, not
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README.md unknown status 1

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Guile Netlink
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=============
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Guile Netlink is a [GNU Guile](https://gnu.org/software/guile) library
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providing an implementation of the netlink protocol.
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It currently provides a generic library for writing implementations of a
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netlink protocol, a low-level rtnetlink implementation that uses that
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library and a high-level API for network management that uses rtnetlink.
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Installation
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------------
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### Manually, from source
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Guile Netlink is a pure Guile library and does not require any library except
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for a libc.
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Guile Netlink uses the autotools to manage the build and installation scripts.
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From a checkout, you can run the following commands to build and install
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in the default prefix, `/usr/local`.
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```bash
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./bootstrap
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./configure
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make
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sudo make install
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```
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To use the result, you can extend the following environment variables.
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```bash
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export GUILE_LOAD_PATH="/usr/local/share/guile/site/3.0${GUILE_LOAD_PATH:+:}$GUILE_LOAD_PATH"
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export GUILE_LOAD_COMPILED_PATH="/usr/local/lib/guile/3.0/site-ccache${GUILE_LOAD_COMPILED_PATH:+:}$GUILE_COMPILED_LOAD_PATH"
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```
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Alternatively, you can skip the `make install` phase and use the result
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directly from this checkout, with the `pre-inst-env` script.
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```bash
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./bootstrap
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./configure
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make
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./pre-inst-env guile
45+
```
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### With Guix
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For convenience, we provide a guix.scm file that defines a package
50+
you can use with [GNU Guix](https://guix.gnu.org).  If you have Guix installed,
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run:
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```bash
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guix install -f guix.scm
55+
```
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License
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-------
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Guile Netlink is licenced under GPLv3 or later. See COPYING file for details.