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Hauke Mehrtens cb1db708e1 build: do not set CCACHE_COMPILERCHECK
Stop overriding CCACHE_COMPILERCHECK from rules.mk and rely on
ccache's default, which hashes the compiler binary's mtime and
size.

For a local tree that is enough: the toolchain only changes when
it is rebuilt, and a rebuild updates mtime and size. Users who
want a stricter check can still set CCACHE_COMPILERCHECK in their
environment.

CI does not depend on this export either. The workflow writes a
secondary ccache.conf with

  compiler_check=string:<toolchain-commit-sha>

so the cache key is tied to the toolchain source revision. That
is both stricter than the previous "%compiler% -v -c" setting
and portable across runners, where compiler mtimes would not
match after restoring a cache archive.

Link: https://github.com/openwrt/openwrt/pull/22995
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
(cherry picked from commit 3956287514e5457723070f4b8bc7ed8084019d39)
(cherry picked from commit a6149ff867c92daa1aaa050b27ba8c6053d7cfe0)
2026-08-18 11:40:40 +01:00
.devcontainer/ci-env devcontainer: Add development environment for gihub codespace 2023-10-30 23:34:26 +01:00
.github formal: fix workflow permissions 2026-07-09 10:57:34 +01:00
.gitlab ci: build: generate release version files for tags 2026-08-18 09:06:22 +00:00
.testbed ci: testbed: labgrid: bump OSPv2 login_timeout for lcm_data reformat 2026-07-02 07:30:07 +02:00
.vscode meta: VS Code: add "Git: Always Sign Off" setting 2024-10-03 17:18:51 +02:00
config mold: dont allow on MacOS 2026-07-09 10:57:30 +01:00
include OpenWrt v24.10.6: revert to branch defaults 2026-08-18 11:40:40 +01:00
LICENSES
package wifi-scripts: fix macaddr check in mac80211.uc 2026-08-18 11:40:40 +01:00
profiles profiles: prpl_core.yml: feed_prplmesh: pwhm: fix setting fh ssid leads to disconnecting extender on bh BSS 2026-08-17 13:25:51 +01:00
scripts scripts/ext-tools.sh: set all prebuilt tool files to same timestamp 2026-08-18 11:40:40 +01:00
target bcm53xx: image: sync targets names with DT compatible 2026-08-18 11:40:40 +01:00
toolchain toolchain: glibc: Update glibc 2.38 to recent HEAD 2025-07-27 19:47:26 +02:00
tools tools/ccache: same behaviour for local and CI builds 2026-07-09 10:57:30 +01:00
.gitattributes
.gitignore ci: cram: add DHCPv4 Force option cram tests 2026-06-02 17:59:31 +01:00
.gitlab-ci.yml ci: docker: drop the in-tree testbed container 2026-07-28 10:14:51 +01:00
BSDmakefile
Config.in build: scripts/config - update to kconfig-v5.14 2022-02-19 13:10:01 +01:00
COPYING COPYING: add COPYING file to specify project licenses 2021-02-14 19:21:38 +01:00
feeds.conf.default OpenWrt v24.10.6: revert to branch defaults 2026-08-18 11:40:40 +01:00
Makefile build,base-files: propagate prplOS version into build artifacts 2025-07-31 15:18:10 +00:00
README.md README: replace "MacOSX" with "macOS" 2024-04-01 18:46:30 +02:00
rules.mk build: do not set CCACHE_COMPILERCHECK 2026-08-18 11:40:40 +01:00

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!

Download

Built firmware images are available for many architectures and come with a package selection to be used as WiFi home router. To quickly find a factory image usable to migrate from a vendor stock firmware to OpenWrt, try the Firmware Selector.

If your device is supported, please follow the Info link to see install instructions or consult the support resources listed below.

An advanced user may require additional or specific package. (Toolchain, SDK, ...) For everything else than simple firmware download, try the wiki download page:

Development

To build your own firmware you need a GNU/Linux, BSD or macOS 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.

binutils bzip2 diff find flex gawk gcc-6+ getopt grep install libc-dev libz-dev
make4.1+ perl python3.7+ rsync subversion unzip 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.

  • LuCI Web Interface: Modern and modular interface to control the device via a web browser.

  • OpenWrt Packages: Community repository of ported packages.

  • OpenWrt Routing: Packages specifically focused on (mesh) routing.

  • OpenWrt Video: Packages specifically focused on display servers and clients (Xorg and Wayland).

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