manifest_aliases only make sense for sysupgrade images.

target_config.lua and target_config_check.lua don't pass a table of
callbacks anymore, so target_config_lib.lua can by simplified by moving
all the code that was in the returned function to the toplevel.

So far, we were using a sort operation on the generated .config to
implement precedence of =y packages over =m, and =m over unset.
Unfortunately, this sort not only used for packages, but for all config
lines. This made it impossible to override settings from targets/generic
in a target config when the new setting was sorted before the generic
setting.

To fix this, track configurations by their keys, so we can properly
override config keys that were set before. Value-based precedence is
only preserved for package configuration.

The config() and try_config() calls always take key and value as
separate arguments now. Strings are quoted automatically; the values
true, nil and false map to y, m and unset for tristate options. config()
can take an optional third argument to override the error message to
display when the setting fails to apply.

All existing target configs generate the same .config with the old and the
new code. The new code is also a bit faster on targets with many devices.

The OpenWrt feeds.conf.defaults contains some feeds that are commented out
and not active. Such feeds will be returned by the default_feeds.sh script
anyway and causing pseudo feeds. Limit the script to only return active
feeds, by filtering out lines starting with '#'.
This usually only applies to the OpenWrt master branch.

Signed-off-by: Sven Roederer <freifunk@it-solutions.geroedel.de>

change as per NeoRider

Certain error message (for example invalid package names) were emitted
once for each device.

The precedence of different package lists was broken since #1876,
disallowing removal of GLUON_FEATURES packages via GLUON_SITE_PACKAGES.

Including all package selections, both implicit defaults and explicit
handling in Gluon, the order of precedence is now the following:

1.  OpenWrt defaults (including target-specific defaults)
2.  Device-specific packages from OpenWrt
3.  Generic default packages (from target/generic)
4.  Target default packages (target/$(GLUON_TARGET))
5.  Removal of opkg for tiny targets
6.  Packages derived from GLUON_FEATURES + GLUON_FEATURES_$(class)
7.  GLUON_SITE_PACKAGES
8.  GLUON_SITE_PACKAGES_$(class)
9.  Device-specific packages from target/$(GLUON_TARGET)
10. Device-specific packages from GLUON_$(device)_SITE_PACKAGES

This also contains various pieces of cleanup:

- No hardcoded order of device classes for target_config.lua arguments
  anymore (in fact, the Makefile doesn't know anything about device
  classes now)
- target_conifg_lib.lua only hardcodes the fallback class for x86, no
  other occurences of specific class names
- Feature -> package list mapping is moved from Makefile to the Lua code
  as well (still implemented in Shell though)

Allows to append additional commands, for example using `||`.

We don't move the images directly, as multiple images of the same device
may have the same source image (on x86), but only delete them after a
whole device has been handled (multiple devices using the same images
must be handled using aliases or manifest aliases instead).

When adding device classes, targets without devices such as x86 were not
handled. As site and feature packages are included on such a per-device
decision, x86 images ended up without most packages.

Include a class setting for a target and include the class-packages
target-wide when this setting is configured.

Fixes 9c523650 ("build: introduce device classes")

This commit allows to define a device-class flag in the target
definitions. This way, it is possible to distinguish between groups
of devices in the build-process in terms of package or feature
selection.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>

[Matthias Schiffer: minor script improvements]

Fixes: 071cf7b2 ("Switch to Lua for target definitions")

This displays the branch, repo and commitID that was attempted to update to but
failed. Users then can compare this output to the configuration they meant to
activate in modules and hopefully better find their typos.

This is now much nicer to luacheck.

This new build flag is mandatory for now (it may default to 0 in a future
Gluon version). It may be set to the following values:

* 0 - Do not build any images for deprecated devices.
* upgrade - Only build sysupgrade images for deprecated devices.
* full - Build both sysupgrade and factory images for deprecated devices.

"Other" images are handled like factory images, as they are also used for
the initial installation of Gluon on a device.

The old bash-based parsing code was way too complex. Replace it with Lua.

Fixes need_one_of() with boolean elements.

Signed-off-by: Petr Štetiar <ynezz@true.cz>

This package allows to automatically switch to another domain, either
at a given point in time or after the node was offline long enough.

This commit allows for binary content in patches created via 'make
update-patches'.

Binary patches are needed for BDFs required for al boards on the new
ipq40xx target. Before this commit, binaries were omitted from the
generated patch which resulted in the patch not able to apply.

Patches without binary content do not differ in case they are created
with the '--binary' flag.

The new extra_image command allows to copy additional images that don't
fall into the sysupgrade or factory categories to the output directory.
These images will be placed in the "other" subdirectory.

The extra_image command takes 3 arguments: in_suffix (suffix in OpenWrt
bin directory), out_suffix (suffix in Gluon output directory) and ext (file
extension). Example:

  extra_image '-tftp' '-tftp' '.bin'

The ext argument can be omitted to control the whole filename suffix
including the extension from in_suffix and out_suffix. Multiple extra_image
commands can be used for a single device; aliases work as usual.

Based-on-patch-by: David Bauer <mail@david-bauer.net>

modules.sh can't depend on openwrt/feeds.conf.default, otherwise the
initial update will fail.

Using slashs instead of dots is a bit unexpected, and as long as we're not
going for full-blown JSONPath, neither is more correct than the other.