Genkernel Quick Start Tutorial - Revision history

Palica: /* Third step: Building and installing the kernel */

2012-11-18T13:12:37Z

‎Third step: Building and installing the kernel

91.66.191.35: /* Second step: Grabbing and tweaking a configuration file */ - corrected black value to blank value

2012-04-24T17:51:09Z

‎Second step: Grabbing and tweaking a configuration file: - corrected black value to blank value

Drobbins at 04:45, 9 June 2011

2011-06-09T04:45:45Z

404 Error: /* Use case #2: Recompiling the Gentoo kernel sources from a SystemRescue CD chroot */

2011-05-24T02:52:18Z

‎Use case #2: Recompiling the Gentoo kernel sources from a SystemRescue CD chroot

404 Error at 02:48, 24 May 2011

2011-05-24T02:48:52Z

404 Error: /* Third step: Building and installing the kernel */

2011-05-24T02:46:14Z

‎Third step: Building and installing the kernel

404 Error at 02:44, 24 May 2011

2011-05-24T02:44:37Z

Oleg at 21:25, 6 April 2011

2011-04-06T21:25:10Z

404 Error: /* Genkernel applied to the Debian sources */

2011-03-08T02:13:02Z

‎Genkernel applied to the Debian sources

Drobbins: /* Second step: Grabbing a configuration file */

2011-03-07T23:34:39Z

‎Second step: Grabbing a configuration file

← Older revision		Revision as of 13:12, 18 November 2012
Line 87:		Line 87:

	The same remarks written in the [[Genkernel_Quick_Start_Tutorial#Third_step:_Building_and_installing_the_kernel\|third paragraph]] of the first use case are still valid here.		The same remarks written in the [[Genkernel_Quick_Start_Tutorial#Third_step:_Building_and_installing_the_kernel\|third paragraph]] of the first use case are still valid here.
		+
		+	[[Category:Kernel]]

@@ Line 71: / Line 71: @@
 </pre>
-Next, tweak the kernel configuration in the way you prefer (manually edition of the .config file, make nconfig, make menuconfig....) if you wish. You are not ready yet! A final step is required: '''you ''must'' either set CONFIG_INITRAMFS_SOURCE to a black value (CONFIG_INITRAMFS_SOURCE="") either delete the statement in the .config file'''. Forgotting to do that will make Genkernel abort the compilation process with a message like:
+Next, tweak the kernel configuration in the way you prefer (manually edition of the .config file, make nconfig, make menuconfig....) if you wish. You are not ready yet! A final step is required: '''you ''must'' either set CONFIG_INITRAMFS_SOURCE to a blank value (CONFIG_INITRAMFS_SOURCE="") either delete the statement in the .config file'''. Forgotting to do that will make Genkernel abort the compilation process with a message like:
 <pre>

@@ Line 5: / Line 5: @@
 TBC
-= Use case #1: Genkernel applied to the Debian sources =
+= Recompiling the Gentoo kernel sources from a SystemRescue CD chroot =
-−
-A good candidate to quickly start with Genkernel is the Debian kernel (sys-kernel/debian-sources) mainly because:
-# Configuration files are available for the various platforms supported by the Debian project
-# The configuration makes an intensive use of putting features in modules
-−
-== First step: emerging the required packages ==
-−
-The first step is to emerge:
-−
-# The Debian sources
-# Genkernel itself
-−
-This is achieved with:
-−
-<pre>
-# emerge sys-kernel/debian-sources sys-kernel/genkernel
-</pre>
-−
-Once the Debian kernel sources are deployed, you should find a directory named '''linux-debian-''version''''' (e.g. linux-debian-2.6.32.30) under '''/usr/src'''. Update your the '''linux''' symlink to point on this directory:
-<pre>
-# cd /usr/src
-# rm linux
-# ln -s linux-debian-2.6.32.30 linux
-</pre>
-Alternatively, emerge the debian-sources with USE="symlink"
-== Second step: Grabbing a configuration file ==
-−
-If is now time to download the kernel configuration file. For this tutorial we will use a configuration file for AMD64 (several others architectures like MIPS or SPARC64 are available)  [http://merkel.debian.org/~jurij as published by the Debian project], if you plan to use the Debian kernel you are advised to review it adjust it to your needs although it is tailored for a vast range of machines.
-−
-<pre>
-# cd linux
-# wget http://merkel.debian.org/~jurij/2.6.32-30/amd64/config-2.6.32-5-amd64.gz
-# gunzip config-2.6.32-5-amd64.gz
-</pre>
-−
-Alternatively, you can use Funtoo's <tt>config-extract</tt> tool to generate an official Debian kernel configuration. Use it as follows:
-−
-<pre>
-# cd linux
-# ./config-extract amd64
-Wrote amd64_none_amd64 kernel configuration to /usr/src/linux-debian-2.6.32.30/.config.
-</pre>
-−
-<tt>config-extract</tt> also allows you to extract special Debian featuresets, such as settings for Xen and [[OpenVZ]] kernels:
-−
-<pre>
-# ./config-extract amd64 openvz
-Wrote amd64_openvz_amd64 kernel configuration to /usr/src/linux-debian-2.6.32.30/.config.
-</pre>
-−
-To see a full list of available Debian kernel configurations, type <tt>./config-extract --list</tt> from within the root kernel source tree.
-−
-After using <tt>config-extract</tt>, run <tt>make oldconfig</tt> and accept all default options by hitting Enter at all prompts.
-−
-== Third step: Building and installing the kernel ==
-−
-This is simply achieved by:
-−
-<pre>
-# genkernel --kernel-config=config-2.6.32-5-amd64 all
-</pre>
-−
-* --kernel-config: use the given name located in the kernel source tree (/usr/src/linux by default is taken unless overridden by --kerndir)
-* all: rebuild the kernel image and the initramfs ramdisk image (aside of kernel modules, the ramdisk image contains tools such as BusyBox and some generic startup scripts, depending on options you use on the command line several additional tools like lvm or raid volume management can be incorporated as well).
-−
-{{ fancyimportant|Unless explicitly stated via ''--no-clean'' or ''no-mrproper'', Genkernel will do a '''make mroprer''' in the kernel source tree, thus cleaning a previous build '''and removing the previous kernel configuration file''' in it.
-}}
-−
-If you use Genkernel to rebuild a Linux kernel on SPARC64, remember to either:
-* Set '''sparc64-unknown-linux-gnu-''' in ''General setup --> Cross-compiler tool prefix''
-* Put '''--kernel-cross-compile=sparc64-unknown-linux-gnu-''' on the Genkernel command line
-−
-One the kernel has been compiled and the ram disk has been generated, the kernel image plus its companion files (initramfs image and System.map) are placed in the /boot directory, You can use your favourite tool to update your bootloader configuration files.
-−
-= Use case #2: Recompiling the Gentoo kernel sources from a SystemRescue CD chroot =
 A second case that many Funtoo users will face to is to compile their own kernel when installing a brand new Funtoo instance from a stage 3 archive (the most common scenario is to boot the machine with SystemRescue CD).

@@ Line 82: / Line 82: @@
 = Use case #2: Recompiling the Gentoo kernel sources from a SystemRescue CD chroot =
 A second case that many Funtoo users will face to is to compile their own kernel when installing a brand new Funtoo instance from a stage 3 archive (the most common scenario is to boot the machine with SystemRescue CD).
 == First step emerging the required packages ==

@@ Line 5: / Line 5: @@
 TBC
-= Business case #1: Genkernel applied to the Debian sources =
+= Use case #1: Genkernel applied to the Debian sources =
 A good candidate to quickly start with Genkernel is the Debian kernel (sys-kernel/debian-sources) mainly because:
@@ Line 80: / Line 80: @@
 One the kernel has been compiled and the ram disk has been generated, the kernel image plus its companion files (initramfs image and System.map) are placed in the /boot directory, You can use your favourite tool to update your bootloader configuration files.
-= Business case #2: Recompiling the Gentoo kernel sources from a SystemRescue CD chroot =
+= Use case #2: Recompiling the Gentoo kernel sources from a SystemRescue CD chroot =
 A second case that many Funtoo users will face to is to compile their own kernel when installing a brand new Funtoo instance from a stage 3 archive (the most common scenario is to boot the machine with SystemRescue CD).
@@ Line 159: / Line 159: @@
 </pre>
-The same remarks written in the third paragraph of the first use case are still valid here.
+The same remarks written in the [[Genkernel_Quick_Start_Tutorial#Third_step:_Building_and_installing_the_kernel|third paragraph]] of the first use case are still valid here.

← Older revision		Revision as of 02:46, 24 May 2011
Line 158:		Line 158:
	# genkernel --no-mrproper all		# genkernel --no-mrproper all
	</pre>		</pre>
		+
		+	The same remarks written in the third paragraph of the first use case are still valid here.