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Josef Schlehofer f1e1daa6e8 u-boot.mk: add LOCALVERSION (explicitly specify OpenWrt build)
For debugging purposes, we need to know if users are using modified
U-boot versions or not. Currently, the U-boot version is somehow
stripped. This is a little bit problematic when there are
backported/wip/to-upstream patches.

To make it more confusing, there was (before this commit) two U-boot
versioning. U-boot compiled by OpenWrt build bots are missing ``Build:``
This is also the case when the U-boot is compiled locally.

Example:
```
U-Boot SPL 2022.01 (Jan 27 2022 - 00:24:34 +0000)
U-Boot 2022.01 (Jan 27 2022 - 00:24:34 +0000)
```

On the other hand, if you run full build, you can at least see, where it
was compiled. Notice added ``Build:``.

Example:
```
U-Boot 2022.01 (Jan 27 2022 - 00:24:34 +0000), Build: jenkins-turris-os-packages-burstlab-omnia-216
```

In both cases, it is not clear to U-boot developers if it is an unmodified
build. This is also caused that there is a missing ``.git`` file from
U-boot folder, and so there is no history. It leads to that it can not
contain suffix ``-dirty`` (uncommitted modifications) or even something
else like number of commits, etc. [1]

When U-boot is compiled as it should be, the version should look like
this: ``U-Boot 2022.04-rc1-01173-g278195ea1f (Feb 11 2022 - 14:46:50 +0100)``
The date is not changed daily when there are new OpenWrt builds.

This commit adds OpenWrt specific version, which could be verified by
using strings.

```
$ strings bin/targets/mvebu/cortexa9/u-boot-omnia/u-boot-spl.kwb | grep -E "OpenWrt*"
U-Boot SPL 2022.01-OpenWrt-r18942+54-cbfce92367 (Feb 21 2022 - 13:17:34 +0000)
arm-openwrt-linux-muslgnueabi-gcc (OpenWrt GCC 11.2.0 r18942+54-cbfce92367) 11.2.0
2022.01-OpenWrt-r18942+54-cbfce92367
U-Boot 2022.01-OpenWrt-r18942+54-cbfce92367 (Feb 21 2022 - 13:17:34 +0000)
```

[1] https://u-boot.readthedocs.io/en/latest/develop/version.html

Reported-by: Pali Rohár <pali@kernel.org>
Suggested-by: Karel Kočí <karel.koci@nic.cz>
[rebased for OpenWrt 21.02]
Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>
(cherry picked from commit d6aa9d9e07)
2022-03-06 20:56:23 +01:00
.github build: Update README & github help 2018-07-08 09:41:53 +01:00
config build: Replace KERNEL_LOCKUP_DETECTOR with KERNEL_SOFTLOCKUP_DETECTOR 2021-09-13 18:48:55 +02:00
include u-boot.mk: add LOCALVERSION (explicitly specify OpenWrt build) 2022-03-06 20:56:23 +01:00
LICENSES LICENSES: include all used licenses in LICENSES directory 2021-02-14 19:21:38 +01:00
package uboot-envtools: mvebu: update uci defaults for Turris Omnia 2022-03-02 13:29:32 +01:00
scripts build,json: fix generation with empty profiles 2021-06-21 09:43:21 -10:00
target kernel: bump 5.4 to 5.4.182 2022-03-06 20:55:26 +01:00
toolchain glibc: update to latest 2.33 HEAD 2022-02-13 00:23:30 +01:00
tools tools/libressl: update to version 3.4.2 2022-03-06 20:56:23 +01:00
.gitattributes add .gitattributes to prevent the git autocrlf option from messing with CRLF/LF in files 2012-05-08 13:30:49 +00:00
.gitignore gitignore: add .vscode for VS Code users 2021-03-29 22:26:27 +02:00
BSDmakefile build: use SPDX license tags 2021-02-05 14:54:47 +01:00
Config.in build: use SPDX license tags 2021-02-05 14:54:47 +01:00
COPYING COPYING: add COPYING file to specify project licenses 2021-02-14 19:21:38 +01:00
feeds.conf.default OpenWrt v21.02.2: revert to branch defaults 2022-02-17 19:00:44 +01:00
Makefile Revert "build: replace which with Bash command built-in" 2021-03-03 23:02:30 +01:00
README.md README: switch from freenode to oftc 2021-06-12 12:41:29 -10:00
rules.mk build: make sure asm gets built with -DPIC 2021-04-10 15:05:18 +02:00

OpenWrt logo

OpenWrt Project is a Linux operating system targeting embedded devices. Instead of trying to create a single, static firmware, OpenWrt provides a fully writable filesystem with package management. This frees you from the application selection and configuration provided by the vendor and allows you to customize the device through the use of packages to suit any application. For developers, OpenWrt is the framework to build an application without having to build a complete firmware around it; for users this means the ability for full customization, to use the device in ways never envisioned.

Sunshine!

Development

To build your own firmware you need a GNU/Linux, BSD or MacOSX system (case sensitive filesystem required). Cygwin is unsupported because of the lack of a case sensitive file system.

Requirements

You need the following tools to compile OpenWrt, the package names vary between distributions. A complete list with distribution specific packages is found in the Build System Setup documentation.

gcc binutils bzip2 flex python3 perl make find grep diff unzip gawk getopt
subversion libz-dev libc-dev rsync which

Quickstart

  1. Run ./scripts/feeds update -a to obtain all the latest package definitions defined in feeds.conf / feeds.conf.default

  2. Run ./scripts/feeds install -a to install symlinks for all obtained packages into package/feeds/

  3. Run make menuconfig to select your preferred configuration for the toolchain, target system & firmware packages.

  4. Run make to build your firmware. This will download all sources, build the cross-compile toolchain and then cross-compile the GNU/Linux kernel & all chosen applications for your target system.

The main repository uses multiple sub-repositories to manage packages of different categories. All packages are installed via the OpenWrt package manager called opkg. If you're looking to develop the web interface or port packages to OpenWrt, please find the fitting repository below.

Support Information

For a list of supported devices see the OpenWrt Hardware Database

Documentation

Support Community

  • Forum: For usage, projects, discussions and hardware advise.
  • Support Chat: Channel #openwrt on oftc.net.

Developer Community

License

OpenWrt is licensed under GPL-2.0