210 lines
7.6 KiB
ReStructuredText
210 lines
7.6 KiB
ReStructuredText
Getting Started
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===============
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Selecting the right version
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---------------------------
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Gluon's releases are managed using `Git tags`_. If you are just getting
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started with Gluon we recommend to use the latest stable release of Gluon.
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Take a look at the `list of gluon releases`_ and notice the latest release,
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e.g. *v2017.1.3*. Always get Gluon using git and don't try to download it
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as a Zip archive as the archive will be missing version information.
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Please keep in mind that there is no "default Gluon" build; a site configuration
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is required to adjust Gluon to your needs. Due to new features being added (or
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sometimes being removed) the format of the site configuration changes slightly
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between releases. Please refer to our release notes for instructions to update
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an old site configuration to a newer release of Gluon.
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An example configuration can be found in the Gluon repository at *docs/site-example/*.
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.. _Git tags: http://git-scm.com/book/en/Git-Basics-Tagging
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.. _list of gluon releases: https://github.com/freifunk-gluon/gluon/releases
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Dependencies
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------------
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To build Gluon, several packages need to be installed on the system. On a
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freshly installed Debian Wheezy system the following packages are required:
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* `git` (to get Gluon and other dependencies)
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* `subversion`
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* `python` (Python 3 doesn't work)
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* `build-essential`
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* `gawk`
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* `unzip`
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* `libncurses-dev` (actually `libncurses5-dev`)
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* `libz-dev` (actually `zlib1g-dev`)
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* `libssl-dev`
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* `wget`
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Building the images
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-------------------
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To build Gluon, first check out the repository. Replace *RELEASE* with the
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version you'd like to checkout, e.g. *v2017.1.3*.
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::
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git clone https://github.com/freifunk-gluon/gluon.git gluon -b RELEASE
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This command will create a directory named *gluon/*.
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It might also tell a scary message about being in a *detached state*.
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**Don't panic!** Everything's fine.
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Now, enter the freshly created directory::
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cd gluon
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It's time to add (or create) your site configuration. If you already
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have a site repository, just clone it::
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git clone https://github.com/freifunk-alpha-centauri/site-ffac.git site
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If you want to build a new site, create a new git repository *site/*::
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mkdir site
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cd site
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git init
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Copy *site.conf*, *site.mk* and *i18n* from *docs/site-example*::
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cp ../docs/site-example/site.conf .
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cp ../docs/site-example/site.mk .
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cp -r ../docs/site-example/i18n .
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Edit these files as you see fit and commit them into the site repository.
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Extensive documentation about the site configuration can be found at:
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:doc:`site`. The
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site directory should always be a git repository by itself; committing site-specific files
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to the Gluon main repository should be avoided, as it will make updates more complicated.
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Next go back to the top-level Gluon directory and build Gluon::
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cd ..
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make update # Get other repositories used by Gluon
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make GLUON_TARGET=ar71xx-generic # Build Gluon
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In case of errors read the messages carefully and try to fix the stated issues (e.g. install tools not available yet).
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``ar71xx-generic`` is the most common target and will generate images for most of the supported hardware.
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To see a complete list of supported targets, call ``make`` without setting ``GLUON_TARGET``.
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You should reserve about 10GB of disk space for each `GLUON_TARGET`.
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The built images can be found in the directory `output/images`. Of these, the `factory`
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images are to be used when flashing from the original firmware a device came with,
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and `sysupgrade` is to upgrade from other versions of Gluon or any other OpenWrt/LEDE-based
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system.
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**Note:** The images for some models are identical; to save disk space, symlinks are generated instead
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of multiple copies of the same image. If your webserver's configuration prohibits following
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symlinks, you can use the following command to resolve these links while copying the images::
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cp -rL output/images /var/www
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Cleaning the build tree
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.......................
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There are two levels of `make clean`::
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make clean GLUON_TARGET=ar71xx-generic
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will ensure all packages are rebuilt for a single target. This normally not
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necessary, but may fix certain kinds of build failures.
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::
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make dirclean
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will clean the entire tree, so the toolchain will be rebuilt as well, which will take a while.
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opkg repositories
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-----------------
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Gluon is mostly compatible with LEDE, so the normal LEDE package repositories
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can be used for Gluon as well.
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This is not true for kernel modules; the Gluon kernel is incompatible with the
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kernel of the default LEDE images. Therefore, Gluon will not only generate images,
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but also an opkg repository containing all core packages provided by LEDE,
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including modules for the kernel of the generated images.
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Signing keys
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............
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Gluon does not support HTTPS for downloading packages; fortunately, opkg deploys
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public-key cryptography to ensure package integrity.
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The Gluon images will contain public keys from two sources: the official LEDE keyring
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(to allow installing userspace packages) and a Gluon-specific key (which is used
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to sign the generated package repository).
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LEDE will handle the generation and handling of the keys itself.
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When making firmware releases based on Gluon, it might make sense to store
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the keypair, so updating the module repository later is possible.
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.. _getting-started-make-variables:
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Make variables
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--------------
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Gluon's build process can be controlled by various variables. They can
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usually be set on the command line or in ``site.mk``.
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Common variables
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................
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GLUON_ATH10K_MESH
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While Gluon does support some hardware with ath10k-based 5GHz WLAN, these WLAN adapters don't work
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well for meshing at the moment, so building images for these models is disabled by default. In addition,
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ath10k can't support IBSS and 11s meshing in the same image due to WLAN firmware restrictions.
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Setting GLUON_ATH10K_MESH to ``11s`` or ``ibss`` will enable generation of images for ath10k devices
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and install the firmware for the corresponding WLAN mode.
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GLUON_BRANCH
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Sets the default branch of the autoupdater. If unset, the autoupdater is disabled
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by default. For the ``make manifest`` command, GLUON_BRANCH defines the branch to
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generate a manifest for.
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GLUON_LANGS
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Space-separated list of languages to include for the config mode/advanced settings. Defaults to ``en``.
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``en`` should always be included, other supported languages are ``de`` and ``fr``.
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GLUON_PRIORITY
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Defines the priority of an automatic update in ``make manifest``. See :doc:`../features/autoupdater` for
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a detailed description of this value.
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GLUON_REGION
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Some devices (at the moment the TP-Link Archer C7) contain a region code that restricts
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firmware installations. Set GLUON_REGION to ``eu`` or ``us`` to make the resulting
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images installable from the respective stock firmwares.
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GLUON_RELEASE
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Firmware release number: This string is displayed in the config mode, announced
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via respondd/alfred and used by the autoupdater to decide if a newer version
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is available. The same GLUON_RELEASE has to be passed to ``make`` and ``make manifest``
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to generate a correct manifest.
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GLUON_TARGET
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Target architecture to build.
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Special variables
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.................
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GLUON_BUILDDIR
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Working directory during build. Defaults to ``build``.
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GLUON_IMAGEDIR
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Path where images will be stored. Defaults to ``$(GLUON_OUTPUTDIR)/images``.
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GLUON_PACKAGEDIR
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Path where the opkg package repository will be stored. Defaults to ``$(GLUON_OUTPUTDIR)/packages``.
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GLUON_OUTPUTDIR
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Path where output files will be stored. Defaults to ``output``.
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GLUON_SITEDIR
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Path to the site configuration. Defaults to ``site``.
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