Configuring or Building Buildroot, U-Boot, Linux Kernel, and BusyBox

Configuring buildroot

Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross complication.

Use the following commands to configue Buildroot on your board.

$ make buildroot_initramfs-menuconfig # initramfs menuconfig

$ make buildroot_rootfs-menuconfig # rootfs menuconfig

Universal Boot Loader (U-Boot) is an open source, primary boot loader used in embedded devices.

Use the following command to configure U-Boot on your board.

$ make uboot-menuconfig # uboot menuconfig

The Linux kernel is the main component of a Linux Operating System (OS) and is the core interface between a computer's hardware and its processes.

Use the following command to build the Linux kernel.

$ make linux-menuconfig # Kernel menuconfig

BusyBox is a convenient tool-set containing stripped-down versions of many Linux utilities.

Use the following commands to build the BusyBox menu configuration.

To build menu configuration for BusyBox with the Initramfs file system:
```
$ make -C ./work/buildroot_initramfs/ O=./work/buildroot_initramfs busybox-menuconfig
```
Figure 5. Example Output
To build menu configuration for BusyBox with the Rootfs file system:
```
$ make -C ./work/buildroot_rootfs/ O=./work/buildroot_rootfs busybox-menuconfig
```
Figure 6. Example Output

If you want to build single package or module, perform the following commands according to your needs:

To build BusyBox:

make -C ./work/buildroot_rootfs/ O=./work/buildroot_rootfs busybox-rebuild # build
busybox package

To build FFmpeg package:

$ make -C ./work/buildroot_rootfs/ O=./work/buildroot_rootfs ffmpeg-rebuild