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With the new 'buildx' command using 'BuildKit' since Docker 23.0 [1], it become easy to build the same image for several architectures [2]. The only requirement is to use a Dockerfile without any architecture specific definition. Since our current Dockefile contains already some i386 specific packages (g++-multilib,libc6:i386) to provide x86 32bits support, we have to install them conditionally. Update the build process described in the Dockerfile accordingly. For now, Aarch64 hosts can't be used by the Buildroot testsuite (yet) since the Bootlin external toolchain (used by default) currently only support x86_64 hosts. [1] https://docs.docker.com/engine/release-notes/23.0/ [2] https://www.docker.com/blog/multi-arch-build-and-images-the-simple-way/ [3] https://www.docker.com/blog/multi-arch-build-what-about-gitlab-ci/ Signed-off-by: Romain Naour <romain.naour@smile.fr> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches