00-Quick-Start

# Quick Start
# This is handy for experienced users that have done LFS builds already.

# If building on a seperate partition, create the file system and mount it.
# Set $LFS to the mount point. Example:
# Perform as root:
mkfs.etx4 /dev/sdXY
mkdir -pv /mnt/lfs
mount /dev/sdXY /mnt/lfs
export LFS=/mnt/lfs

# Downloaded packages and patches will need to be stored somewhere that is 
# conveniently available throughout the entire build. A working directory 
# is also required to unpack the sources and build them. $LFS/sources can 
# be used both as the place to store the tarballs and patches and as a 
# working directory. By using this directory, the required elements will 
# be located on the LFS partition and will be available during all stages 
# of the building process.

# To create this directory, execute the following command, as user root, 
# before starting the download session:
mkdir -pv $LFS/sources

# Keep the directory neat:
mkdir -pv $LFS/sources/{pkgs,patches,files}

# Make this directory writable and sticky:
chmod -v a+wt $LFS/sources

# Download the packages via a list (provided in this repo) with wget:
wget --input-file=wget-list --continue --directory-prefix=$LFS/sources/pkgs

# Copy the patches from this repo:
cp -r patches/* $LFS/sources/patches/

# There is a separate file, md5sums, which can be used to verify that 
# all the correct packages are available before proceeding. Place that 
# file in $LFS/sources and run:
pushd $LFS/sources/pkgs
md5sum -c md5sums
popd

# Copy the patches from this repo:
cp -r patches/* $LFS/sources/patches/

# Create the required directory by running the following as root:
mkdir -v $LFS/tools

# Create a /tools symlink on the host system. This will point to the 
# newly-created directory on the LFS partition. Run this command as root 
# as well:
ln -sv $LFS/tools /

# As root, issue the following commands to add the new LFS user:
groupadd lfs
useradd -s /bin/bash -g lfs -m -k /dev/null lfs

# Set password for user
passwd lfs

# Grant lfs full access to $LFS/tools by making lfs the directory owner:
chown -v lfs $LFS/tools

# If a separate working directory was created as suggested, give user 
# lfs ownership of this directory:
chown -v lfs $LFS/sources

# Next, login as user lfs. This can be done via a virtual console, 
# through a display manager, or with the following substitute user command:
su - lfs

# Set up the environment:
cat > ~/.bash_profile << "EOF"
exec env -i HOME=$HOME TERM=$TERM PS1='\u:\w\$ ' /bin/bash
EOF

cat > ~/.bashrc << "EOF"
set +h
umask 022
LFS=/mnt/lfs
LC_ALL=POSIX
LFS_TGT=$(uname -m)-lfs-linux-gnu
PATH=/tools/bin:/bin:/usr/bin
export LFS LC_ALL LFS_TGT PATH
EOF

# Source the just-created user profile
source ~/.bash_profile