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Debugging binaries in images that are built with sstrip is extremely
annoying, as not even objdump will work on them.

Switching from sstrip to standard strip increases the ath79 image size
(for some usual Archer C7 v2 configuration I used for testing) by ~70KiB,
or 1.3% of the rootfs size (~1% of the total image size), which is
rarely worth the decreased debuggability.

Extend GLUON_DEBUG to not only distinguish 0 and 1, such that:

- 0 uses sstrip same as before
- 1 switches to regular strip; this is the new default
- 2 includes all debug info, like GLUON_DEBUG=1 did before

Signed-off-by: David Bauer <mail@david-bauer.net>
(cherry picked from commit 9adddafc)

Signed-off-by: David Bauer <mail@david-bauer.net>
(cherry picked from commit a2ed18c5)

Signed-off-by: David Bauer <mail@david-bauer.net>
(cherry picked from commit 3c3a6a92)

Signed-off-by: David Bauer <mail@david-bauer.net>

In case a community does not use Git for versioning it's site or using a
different versioning scheme that do not have annotated tags on the
master branch.

Signed-off-by: David Bauer <mail@david-bauer.net>

(cherry picked from commit b313a631)

The build process fails without that.

Co-authored-by: Tom Herbers <mail@tomherbers.de>

* add missing libelf-dev dependency (to build x86-64)
* remove subversion dependency
* add rsync dependency
* add ecdsautils to docs

Signed-off-by: David Bauer <mail@david-bauer.net>

We currently don't have any deprecated devices, so it doesn't make much
sense to force every site to specify this variable. Make it default to 0
instead.

Add some explanation when `make update` needs to be run again.

2 spaces is the most common indentation width used in the docs; adjust
the rest for consistency.

Also change .editorconfig accordingly.

Using `make container` or, if you don't have automake/gmake on your host
system, `./scripts/container.sh` will build an image for the current
branch your are on and drop you into a shell running inside a container
using that image.

From there all tooling required to work on Gluon is available.

Supports both podman (preferred) and docker.

This has become possible with OpenWrt 21.02 and while the Dockerfile
already received that updated, we forgot to update the CI and the
documentation.

Replace occurences of ar71xx with ath79. Remove references of ar71xx
targets which are not relevant anymore.

Co-Authored-By: Martin Weinelt <martin@darmstadt.freifunk.net>

(cherry picked from commit bf8c3bab)

This change stores a Kernel with Debug-Symbols for the current
architecture in a new output directory '<outputdir>/debug'.
This allows a developer or operator of a network to store the kernel
along with the actual images. In case of a kernel oops the debug
information can be used with the script
'scripts/decode_stacktrace.sh' in the kernel source tree to get the
names to the symbols of the stack trace.

OpenWRT already provides the CONFIG_COLLECT_KERNEL_DEBUG -option that
creates a kernel with debug-symbols in the OpenWRT output directory.
This change enables this option and copies the generated kernel to the
gluon output directory.

Signed-off-by: Chrissi^ <chris@tinyhost.de>

Signed-off-by: David Bauer <mail@david-bauer.net>

(cherry picked from commit 7f3a3042)

(cherry picked from commit 447595f0)

fixes #1935
found by @lrnzo

(cherry picked from commit 63ebeb25)

(cherry picked from commit 239c379d)