OpenWRT encapsulated build environment

build openwrt firmware images within podman container. based on debian bullseye

some specific build configurations are available in /home/build/conf

Current Snapshot

• Tag: v18.06.4
• Tag: v19.07.4
• Tag: v21.02.2

Usage

Step 1 - Build container image

# build container image using specific openwrt tag/branch
# the tag/branch name is also used as container image tag
# this will automatically checkout the git tag/branch and download the related feeds
./openwrtbuild init v21.02.2

Step 2 - Setup build configuration and run make

Note: building the specific toolchain will initially take some time depending on your cpu resources (+20min)

Example - Custom Build

# set target device
make menuconfig

# set defaults
make defconfig

# change config
make menuconfig

# fetch packages
make download

# build (n+1 core)
make -j5

Example - Load preconfiguration file

# copy diffconfig
cp ../conf/v19/wrtac.conf .config

# expand diffconfig
make defconfig

# fetch packages
make download

# build (n+1 core)
make -j5

Step 3 - Firnware Images

The firmware images are stored within the directory target/ of your current working dir via bind-mount (container /home/build/openwrt/bin/targets/<device>/<arch>).

References/Docs

• Quick Image Building Guide | openwrt.org
• Build system Usage | openwrt.org

Device References

• Linksys WRTxxxAC Series

Configuration Templats

A few configuration templates are available in conf/

Save Custom Configurations

You can dump your config changes by using he scripts/diffconfig.sh script

Example

./scripts/diffconfig.sh > myconfig

Prebuild Images

Some prebuild images (from configuration templates) are available on http://dl.a3non.org/openwrt/

License

The Dockerfile and configuration templates are OpenSource and licensed under the Terms of Mozilla Public License 2.0 - your're welcome to contribute