How to compile Busybox?

Question

(The i9100 and i9100p phones have Exynos 4210 SoC which includes Cortex A9 dual core 1.2Ghz processor which supports NEON.)

I will compile the latest busybox source

Answer 1

How to compile busybox?

1st download toolchain. You can refer to this: Advice regarding installing ARM toolchain on Ubuntu VM (64bit)

1. untar new source-code

2. create default config

make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- defconfig

A default configuration file is created.

3. update config to change it to our needs:

make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- menuconfig

The option to compile Busybox as a static executable, so that we don’t have to copy the dynamic libraries inside the root filesystem. The setting can be found in “Busybox Settings --> Build Options“. Also, select what utilities you want embedded in Busybox.

4. Then, the following command builds Busybox and creates a directory called _install containing the root filesystem tree:

   make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- install.

Compile statically. If you compile dynamically then you need to copy libraries to target.

For more details see this link: http://balau82.wordpress.com/2010/03/27/busybox-for-arm-on-qemu/

Answer 2

For Android you can use config android_defconfig and build with examples/android-build.

I successfully used busybox patched by sherpya: his config sherpya_android_defconfig and slightly modified build script examples/android-build.