These are some of the tools that come with the klibc project (available
at https://git.kernel.org/pub/scm/libs/klibc/klibc.git) that are meant to
provide simplified versions of several util-linux tools. It explicitly
does not provide anything normally provided by coreutils, bsdutils and
the likes.
In Chimera, this is to be used together with bsdutils, which already
provides a reasonably small core userland, but not these.
The klibc project itself is provided under the terms of the MIT license.
This fork uses meson. Therefore, you will need that installed. You will
also need the Linux kernel headers installed.
Quick instructions:
$ mkdir build
$ cd build
$ meson .. --prefix=/usr
$ ninja all
$ ninja install