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BusyBox for Embedded Linux
BusyBox is a compact suite of Unix utilities designed for embedded Linux, known as the 'Swiss Army knife' for its functionality. It allows users to configure, compile, and customize features for their specific needs, while maintaining a small footprint, typically under 500 KB. Installation is straightforward, and users can modify the installation path as required.
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BusyBox for Embedded Linux
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- 3. BusyBox Contents ● Introduction ● Building –Configuration – Compilation ● Installation
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- 5. BusyBox Introduction ● Often calledas the Swiss Army Knife of Embedded Linux ● BusyBox combines tiny versions of many common UNIX utilities into a single small executable ● It provides replacements for most of the utilities you usually find in GNU fileutils, shellutils, etc ● Written with size-optimization and limited resources in mind
- 6. BusyBox Introduction ● The utilitiesin BusyBox generally have fewer options than their full-featured GNU cousins; with expected functionality and behave very much like their GNU counterparts ● Provides a fairly complete environment for any small or embedded system ● Extremely modular so you can easily include or exclude commands (or features) at compile time ● This makes it easy to customize your embedded systems ● Sizes less than < 500 KB (statically compiled with uClibc) or less than 1 MB (statically compiled with glibc)
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- 8. BusyBox Building - Configuration ●Download the latest stable sources from http://busybox.net ● You may try the following targets for configuration make defconfig ● Configures all options for regular users. make allnoconfig ● Unselects all options. Good to configure only what you need. ● Linux kernel like configuration, make menuconfig or make xconfig also available
- 9. BusyBox Building - Compilation ●BusyBox, by specifying the cross compiler prefix. make CROSS_COMPILE=<cross_compile_path> ● cross_compile_path could be the command itself if already exported in PATH variable, else you can specify the installation path of command ● For example for arm platform it would look like make CROSS_COMPILE=arm-linux- ● The cross compiler prefix can be set in configuration interface if required BusyBox Setting Build Option Cross Compiler prefix→ →
- 10. BusyBox Installation ● To installBusyBox just type make install ● The default installation path would the current directory, will should see _install directory ● The installation path can be customized in configuration if required as mentioned below BusyBox Setting Installation Option BusyBox installation→ → prefixs ● The installation directory will contain Linux like directory structure with symbolic links to busybox executable
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