From 9d73d30759ed24f86a26a9c8facbccadc5ccb832 Mon Sep 17 00:00:00 2001
From: YellowJacketLinux <anymouseprophet@gmail.com>
Date: Sat, 12 Oct 2024 19:23:21 -0700
Subject: [PATCH] ready to try a kernel build...

---
 CHROOT.sh                      |  4 ++
 KernelBuild/02-linux-kernel.sh | 77 ++++++++++++++++++++++++++++++++++
 2 files changed, 81 insertions(+)
 create mode 100644 KernelBuild/02-linux-kernel.sh

diff --git a/CHROOT.sh b/CHROOT.sh
index 9af4450..22ebd04 100644
--- a/CHROOT.sh
+++ b/CHROOT.sh
@@ -18,6 +18,10 @@ LFS="/mnt/newlfs"
 cp versions.sh ${LFS}/sources/CH7Build/
 cp versions.sh ${LFS}/sources/CH8Build/
 cp versions.sh ${LFS}/sources/KernelBuild/
+cp KernelBuild/lts-kernel-config ${LFS}/sources/
+
+# TEMPORARY, REMOVE BEFORE FINAL BUILD
+touch ${LFS}/sources/SKIPTESTS
 
 chown --from lfs -R root:root ${LFS}/{usr,lib,var,etc,bin,sbin,tools}
 
diff --git a/KernelBuild/02-linux-kernel.sh b/KernelBuild/02-linux-kernel.sh
new file mode 100644
index 0000000..000512d
--- /dev/null
+++ b/KernelBuild/02-linux-kernel.sh
@@ -0,0 +1,77 @@
+#!/bin/bash
+
+source versions.sh
+
+GLSOURCES="/sources"
+
+KVSTRING="${linux_lts_version}-lfs-12.2-systemd"
+
+pushd ${GLSOURCES} > /dev/null 2>&1 || myfail "Failed to move to ${GLSOURCES}"
+
+[ -d linux-${linux_lts_version} ] && rm -rf linux-${linux_lts_version}
+
+tar -Jxf ${linux_lts_tarball}
+
+cd linux-${linux_lts_version}
+
+make mrproper
+cp ../lts-kernel-config ./.config
+
+make oldconfig
+if [ $? -ne 0 ]; then
+  myfail "Failed building kernel"
+fi
+
+make modules_install
+if [ $? -ne 0 ]; then
+  myfail "Failed building kernel modules"
+fi
+
+rm -f /lib/modules/${linux_lts_version}/build
+rm -f /lib/modules/${linux_lts_version}/source
+install -D -m644 .config /boot/config-${KVSTRING}
+install -m644 System.map /boot/System.map-${KVSTRING}
+install -m644 arch/x86_64/boot/bzImage /boot/vmlinuz-${KVSTRING}
+
+cp -r Documentation /usr/share/doc/linux/linux-${linux_lts_version}
+
+popd
+
+# cleanup
+
+pushd ${GLSOURCES}
+
+rm -rf linux-${linux_lts_version}
+
+# only write grub configuration for USBFlash
+if [ ! -f /USBFlash ]; then
+  echo "Manually update the /boot/grub/grub.cfg file."
+  echo "In theory, you can shut down, remove the thumb drive, and boot!"
+  exit 0
+fi
+
+[ ! -d /boot/grub ] && mkdir /boot/grub
+
+cat > /boot/grub/grub.cfg << "EOF"
+# Begin /boot/grub/grub.cfg
+set default=0
+set timeout=5
+
+insmod part_gpt
+insmod ext2
+set root=(hd0,2)
+
+EOF
+
+echo "root=(hd0,2)" >> /boot/grub/grub.cfg
+echo "" >> /boot/grub/grub.cfg
+echo " menuentry \"GNU/Linux, Linux ${KVSTRING}\" {" \
+  >> /boot/grub/grub.cfg
+echo "        linux   /boot/vmlinuz-${KVSTRING} root=/dev/sda2 ro" \
+  >> /boot/grub/grub.cfg
+echo "}" >> /boot/grub/grub.cfg
+
+echo "Please verify /boot/grub/grub.cfg is correct."
+echo "If so, exit the chroot and run grub-install on USB Flash device"
+echo "and set device as bootable."
+