Now that all the packages which are required to build the rest of the
needed tools are on the system, it is time to enter the chroot
environment and finish installing the temporary tools. This
environment will also be used to install the final system. As user
root
, run the following command to
enter the environment that is, at the moment, populated with nothing
but temporary tools:
chroot "$LFS" /usr/bin/env -i \ HOME=/root \ TERM="$TERM" \ PS1='(lfs chroot) \u:\w\$ ' \ PATH=/usr/bin:/usr/sbin \ /bin/bash --login
The -i
option given to the
env command will clear
all the variables in the chroot environment. After that, only the
HOME
, TERM
,
PS1
, and PATH
variables are set again. The TERM=$TERM
construct sets the
TERM
variable inside chroot to the same
value as outside chroot. This variable is needed so programs like
vim and less can operate properly. If other
variables are desired, such as CFLAGS
or
CXXFLAGS
, this is a good place to set
them.
From this point on, there is no need to use the LFS
variable any more because all work will be
restricted to the LFS file system; the chroot command runs the Bash shell
with the root (/
) directory set to
$LFS
.
Notice that /tools/bin
is not in the
PATH
. This means that the cross toolchain
will no longer be used.
Note that the bash
prompt will say I have no name!
This is normal because the /etc/passwd
file has not been created yet.
It is important that all the commands throughout the remainder of this chapter and the following chapters are run from within the chroot environment. If you leave this environment for any reason (rebooting for example), ensure that the virtual kernel filesystems are mounted as explained in Section 7.3.1, “Mounting and Populating /dev” and Section 7.3.2, “Mounting Virtual Kernel File Systems” and enter chroot again before continuing with the installation.