BuildRoot

 

• Buildroot is one of technique for automatic generation of 

• Bootloader

• Kernel Image

• Root file system

• But we will now generate only rootfs. It is mostly based on the Busybox installation but in a automated way and user friendly. And based on the Kconfig.

• For this download the buildroot from the git as

• git clone git://git.buildroot.net/buildroot

• In order to build the rootfs for bbb, make the config as

• make beaglebone_defconfig

• It selects the Processor as Arm and its variant as Cortex-A8.

Important configuration

• Filesystem Images, select the

• tar the root file system

• Compression method (gzip)

• So that it can be untared easily for the nfs booting.

• It also makes us to select the default file system skeleton and alter to our needs.

• Target Packages:

• It is important menu, where all the application are located.

• Busybox 

• And other like make, python, perl, and so on.

• System configuration

• It is the menu where

• Banner : 

• Root login password

• Toolchain

• It allows us to select the internel toolchain or external toolchain that is created using croos-tool-ng.

• After the necessary configuration, run the 

• make

• It takes the several minutes for compilation and generates the output in the folder

• output/images

• Buildroot once build the packages, it does not rebuild it. In order to rebuild the particular package, you have to remove the .stamp file. (I have not tried it).

• It also provides the Project specific package management. ( have to try).

• You can also use the local http server for downloading the packages. ( Have to try)

• Alternative to Buildroot are Open-embedded, Yocto.