From 7009ec02d5fde2ee02fa9abd900278c215926a10 Mon Sep 17 00:00:00 2001
From: Alexey Skobkin <skobkin-ru@ya.ru>
Date: Mon, 20 Jun 2022 17:48:46 +0300
Subject: [PATCH] preparekern-desktop added.

---
 bin/preparekern-desktop | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100755 bin/preparekern-desktop

diff --git a/bin/preparekern-desktop b/bin/preparekern-desktop
new file mode 100755
index 0000000..3d32336
--- /dev/null
+++ b/bin/preparekern-desktop
@@ -0,0 +1,32 @@
+#!/usr/bin/env sh
+ESP_MOUNTPOINT=/boot/efi
+
+# Mounting EFI System Partition
+mount $ESP_MOUNTPOINT
+# Going to current Linux source directory
+cd /usr/src/linux
+# Removing verion record
+rm .version
+# Checking if we already have config or it's a new kernel
+[[ ! -f .config ]] && zcat /proc/config.gz > .config
+# Completing merging kernel config options with current version
+make -j32 oldconfig &&
+## Showing kernel configurations interface
+#make -j8 nconfig &&
+# Compiling kernel using -jN (where N is number of threads)
+# Common value is N = number of CPU cores
+make -j32 bzImage modules &&
+# Installing kernel modules
+make modules_install &&
+# Rebuilding 3rd party kernel modules
+emerge -vq @module-rebuild &&
+# Doing backup of current kernel version and copying new version to ESP partition
+(
+cd $ESP_MOUNTPOINT/EFI/gentoo
+mv -f kernel.old.efi kernel.old2.efi &>/dev/null;
+mv -f kernel.efi kernel.old.efi &>/dev/null;
+cp /usr/src/linux/arch/x86/boot/bzImage kernel.efi
+) &&
+# Showing current kernels
+echo "Current kernel files:" &&
+file /boot/efi/EFI/gentoo/*