The Bootstrapping Process¶
The purpose of the bootstrapping process is to use the host system to build a Linux/GNU system we can boot into.
A toolchain is the set of tools needed to build an executable program from C source file(s).
The KaarPux toolchain consists of
- gcc C compiler
- linker from binutils
- glibc (including linux headers)
chroot changes the apparent root directory,
so we are running inside a jail, where the root is
bounded by the directory specified when entering the
This is used to build KaarPux on the host system.
Bootstrap step 1 and 2 use the host system to create a new toolchain.
This toolchain is found in the
which is linked as
/tools in both the host
environment and the chroot environment. Bootstrap step 3 to 7 use the
Bootstrap step 3 uses the new toolchain to compile a number of utilities needed in the chroot.
Bootstrap step 4 compiles a new glibc (including linux headers) in a chroot,
Bootstrap step 5 now compiles a new gcc after building a handfull of dependencies.
Bootstrap step 6 builds bash after building a handfull of dependencies.
With the new toolchain under dash, bootstrap step 7 now builds
a lot of useful GNU/Linux packages into the chroot.
After bootstrap step 7 we do not need the
anymore, as everything needed is now installed in the main chroot.
In the main chroot, bootstrap step 8 now builds the rest of the packages needed to build the bootable GNU/Linux system, in particular the Linux kernel and grub.