5.6. BusyBox-1.24.2

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. The utilities in BusyBox generally have fewer options than their full-featured GNU cousins; however, the options that are included provide the expected functionality and behave very much like their GNU counterparts. BusyBox provides a fairly complete environment for any small or embedded system.

5.6.1. Installation of BusyBox

First ensure the BusyBox source is completely clean:

make distclean


We tell BusyBox to use the generic defconfig. For those who are more adventurous, you can use make menuconfig, and create a custom or modified configuration for your build.

The following tells BusyBox to use the default configuration:

make ARCH="${CLFS_ARCH}" defconfig

Disable building both ifplugd and inetd as they both have issues building against musl:

sed -i 's/\(CONFIG_\)\(.*\)\(INETD\)\(.*\)=y/# \1\2\3\4 is not set/g' .config
sed -i 's/\(CONFIG_IFPLUGD\)=y/# \1 is not set/' .config

Disable the use of utmp/wtmp as musl does not support them:

sed -i 's/\(CONFIG_FEATURE_WTMP\)=y/# \1 is not set/' .config
sed -i 's/\(CONFIG_FEATURE_UTMP\)=y/# \1 is not set/' .config

Disable the use of ipsvd for both TCP and UDP as it has issues building against musl (similar to inetd's issues):

sed -i 's/\(CONFIG_UDPSVD\)=y/# \1 is not set/' .config
sed -i 's/\(CONFIG_TCPSVD\)=y/# \1 is not set/' .config

Compile the package:


Install the package:

  CONFIG_PREFIX="${CLFS}/targetfs" install

If you're going to build your kernel with modules, you will need to make sure depmod.pl is available for your host to execute:

cp -v examples/depmod.pl ${CLFS}/cross-tools/bin
chmod -v 755 ${CLFS}/cross-tools/bin/depmod.pl

5.6.2. Contents of BusyBox

Installed programs: To be Written