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buildroot-docker

A simple build environment for Buildroot by using Docker.

Usage

Use following command to build Docker image, volumes with volume only container, and run a shell for the Buildroot.

make image volumes run
  • The working directory is /buildroot, where the Buildroot is checked out.
  • The default output directory /output and download directory /buildroot/dl are in volume only container.
  • images is mounted /output/images to retrieve the images built.

NOTE: See Dockerfile why it is using /output instead of default /buildroot/output.

Example usage for Linux on LiteX VexRiscv

This is an example usage to build Linux image for Linux on LiteX VexRiscv.

Run Buildroot Docker container.

$ make run ARGS='-v /path/to/linux-on-litex-vexriscv:/linux-on-litex-vexriscv'

In Docker container, run Buildroot.

$ make BR2_EXTERNAL=/linux-on-litex-vexriscv/buildroot litex_vexriscv_defconfig
$ make

It builds fw_jump.bin, Images, and rootfs.cpio, places them in /output/images where is mounted from images also place symlinks in /linux-on-litex-vexriscv/images where is mounted from /path/to/linux-on-litex-vexriscv/images, but these are pointing the locaiton in container thus replace them with the one in images.