Trying to build a minimal buildroot for using as the root in a container image.

Just using the default setup from buildroot, but without bootloader and kernel.

2022.02.x:

• GCC 10 (BR2_GCC_VERSION_10_X=y)
• Linux 5.15 (BR2_KERNEL_HEADERS_5_15=y)

BR2_TOOLCHAIN_BUILDROOT_UCLIBC=y
# BR2_TOOLCHAIN_BUILDROOT_MUSL is not set
# BR2_TOOLCHAIN_BUILDROOT_GLIBC is not set

BR2_TARGET_ROOTFS_TAR=y
# BR2_TARGET_ROOTFS_CPIO is not set
# BR2_TARGET_ROOTFS_EXT2 is not set

# BR2_LINUX_KERNEL is not set
# BR2_TARGET_SYSLINUX is not set
# BR2_TARGET_GRUB2 is not set

• board/

• configs/

This is where the distribution targets are defined, with helper files and defconfig.

• buildroot/

• output/

This is where the sources and build happens, and where the output ends up afterwards.

• support/

Support files for building, such as a container image with all required build tools.

• container/

Contains helper files for constructing the container image from the rootfs archive.

Toolchains:

i586-buildroot-linux-uclibc

61M	i586-buildroot-linux-uclibc_sdk-buildroot.tar.gz
36M	i586-buildroot-linux-uclibc_sdk-buildroot.tar.xz

Reference board:

i586 (386)

2.0M	rootfs.tar
1.6M	root.tar