Talk:Building a Kernel from Source

I'm thinking we should include the option of not having a initrd, and just having a bzImage.

I like that idea too.

This guide directly starts with using dracut. I think it's better to rewrite it with generic ideas how to build custom kernel, without initrd, and then with different initramfs creation tools.

i propose we move this article to Kernel/Manual i propose we sign our discussion statements ala

~~~~

Threesixes (talk) 19:34, 23 September 2014 (UTC)

build useflag?

Why, in advanced section, is the "build" useflag set?

When I equery u vanilla-sources for instance, it is said:

   !!internal use only!! DO NOT SET THIS FLAG YOURSELF!, used for creating build images and the
   first half of bootstrapping [make stage1

listings of sys-kernel as of June 29, 2015

--Danielv (talk) 21:02, June 29, 2015 (UTC)

eix -A sys-kernel/alt-sources

• sys-kernel/alt-sources

    Available versions:  (3.18.10) (~)3.18.10^m
    Homepage:            http://kernel.sysresccd.org/
    Description:         Kernel Sources and Patches for the System Rescue CD Alternate Kernel

eix -A sys-kernel/aufs-sources

• sys-kernel/aufs-sources

    Available versions:
    (3.14.41) (~)3.14.41^bs
    (3.14.42) (~)3.14.42^bs
    (3.14.43) (~)3.14.43^bs
    (3.14.44) (~)3.14.44^bs
    (3.18.12) (~)3.18.12^bs
    (3.18.13) (~)3.18.13^bs
    (3.18.14) (~)3.18.14^bs
    (3.18.16) (~)3.18.16^bs
    (3.19.8) (~)3.19.8^bs
    (4.0.4) (~)4.0.4^bs
    (4.0.5) (~)4.0.5^bs
      {build deblob experimental module symlink vanilla}
    Homepage:            http://dev.gentoo.org/~mpagano/genpatches http://aufs.sourceforge.net/
    Description:         Full sources including the Gentoo patchset for the 4.0 kernel tree and aufs4 support

eix -A sys-kernel/better-initramfs-bin

• sys-kernel/better-initramfs-bin

    Available versions:  0.9.0.1^m {+gzip}
    Homepage:            https://github.com/piotrkarbowski/better-initramfs

eix -A sys-kernel/bliss-initramfs

• sys-kernel/bliss-initramfs

    Available versions:  6.5.0^ms {luks lvm raid +udev zfs}
    Homepage:            https://github.com/fearedbliss/bliss-initramfs
    Description:         Boot your system's rootfs from ZFS, LVM, RAID, or a variet

y of other configs.

eix -A sys-kernel/bliss-kernel

• sys-kernel/bliss-kernel

    Available versions:
    (3.14.43-FC.01) 3.14.43^ms
    (3.14.44-FC.01) (~)3.14.44^ms
    Homepage:            http://xyinn.org/
    Description:         Precompiled Vanilla Kernel (Kernel Ready-to-Eat [KRE])

eix -A sys-kernel/centos7plus-sources

• sys-kernel/centos7plus-sources

    Available versions:  3.10.0.123.13.2^m 3.10.0.123.20.1^m 3.10.0.229.4.2^m {buil

d symlink}

    Homepage:            http://www.redhat.com/
    Description:         Red Hat Enterprise Linux kernel sources

eix -A sys-kernel/ck-sources

• sys-kernel/ck-sources

    Available versions:
    (3.4.107) (~)3.4.107^bs
    (3.10.77) (~)3.10.77^bs
    (3.14.42) (~)3.14.42^bs
    (3.14.43) (~)3.14.43^bs
    (3.14.44) (~)3.14.44^bs
    (3.18.13) (~)3.18.13^bs
    (3.18.14) (~)3.18.14^bs
    (3.18.16) (~)3.18.16^bs
    (3.19.8) (~)3.19.8^bs
    (4.0.4-r1) (~)4.0.4-r1^bs
    (4.0.5) (~)4.0.5^bs
      {bfsonly build deblob experimental symlink urwlocks}
    Homepage:            http://www.kernel.org/ http://www.gentoo.org/ http://dev.gentoo.org/~mpagano/genpatches/ http://users.on.net/~ckolivas/kernel/ http://www.fsfla.org/svn/fsfla/software/linux-libre/releases/tags
    Description:         Full Linux 4.0 kernel sources with Con Kolivas' high performance patchset and Gentoo's genpatches

eix -A sys-kernel/cryptodev

• sys-kernel/cryptodev

    Available versions:  (~)1.7^t {examples KERNEL="linux"}
    Homepage:            http://cryptodev-linux.org/index.html
    Description:         device that allows access to Linux kernel cryptographic drivers

eix -A sys-kernel/debian-sources [I] sys-kernel/debian-sources

    Available versions:
    (3.2.57) **3.2.57^mbs
    (3.16.2) 3.16.2^mbs
    (3.16.7) 3.16.7^mbs
    (3.19.3) 3.19.3^mbs
    (4.0.4) [M]4.0.4^mbs
      {binary rt}
    Installed versions:  3.19.3(3.19.3)^mbs(04:27:35 PM 06/23/2015)(binary -rt)
    Homepage:            http://www.debian.org
    Description:         Debian Sources (and optional binary kernel)

eix -A sys-kernel/dkms

• sys-kernel/dkms

    Available versions:  2.2.0.0 {bash-completion}
    Homepage:            http://linux.dell.com/dkms
    Description:         Dynamic Kernel Module Support

eix -A sys-kernel/dracut

• sys-kernel/dracut

    Available versions:  (~)038-r2^t (~)040^t (~)041^t {debug selinux systemd}
    Homepage:            http://dracut.wiki.kernel.org
    Description:         Generic initramfs generation tool

eix -A sys-kernel/genkernel [I] sys-kernel/genkernel

    Available versions:  3.4.40.7-r6^m {+cryptsetup ibm selinux}
    Installed versions:  3.4.40.7-r6^m(07:07:48 PM 06/24/2015)(cryptsetup -ibm -selinux)
    Homepage:            http://www.gentoo.org
    Description:         Gentoo automatic kernel building scripts

• sys-kernel/genkernel-next

    Available versions:  35 55 (~)60 63 {cryptsetup dmraid gpg iscsi mdadm plymouth selinux}
    Homepage:            http://www.gentoo.org
    Description:         Gentoo automatic kernel building scripts, reloaded

eix -A sys-kernel/gentoo-sources [I] sys-kernel/gentoo-sources

    Available versions:
    (3.4.106) (~)3.4.106^bs
    (3.4.107) (~)3.4.107^bs
    (3.4.9999) **3.4.9999^bs
    (3.10.77) 3.10.77^bs
    (3.10.79) (~)3.10.79^bs
    (3.10.80) (~)3.10.80^bs
    (3.10.81) (~)3.10.81^bs
    (3.12.44) 3.12.44^bs
    (3.12.9999) **3.12.9999^bs
    (3.14.41) 3.14.41^bs
    (3.14.42) (~)3.14.42^bs
    (3.14.43) (~)3.14.43^bs
    (3.14.44) (~)3.14.44^bs
    (3.14.45) (~)3.14.45^bs
    (3.18.16) 3.18.16^bs
    (3.19.8) (~)3.19.8^bs
    (4.0.4) (~)4.0.4^bs
    (4.0.5) 4.0.5^bs
    (4.0.6) (~)4.0.6^bs
    (4.1.0) (~)4.1.0^bs
      {build deblob experimental symlink}
    Installed versions:  3.18.16(3.18.16)^bs(04:01:22 PM 06/24/2015)(-build -deblob -experimental -symlink) 4.1.0(4.1.0)^bs(07:15:20 AM 06/29/2015)(-build -deblob -experimental -symlink)
    Homepage:            http://dev.gentoo.org/~mpagano/genpatches
    Description:         Full sources including the Gentoo patchset for the 4.1 kernel tree

eix -A sys-kernel/git-sources

• sys-kernel/git-sources

    Available versions:
    (4.1_rc1) (~)4.1_rc1^bs
    (4.1_rc2) (~)4.1_rc2^bs
    (4.1_rc3) (~)4.1_rc3^bs
    (4.1_rc4) (~)4.1_rc4^bs
    (4.1_rc5) (~)4.1_rc5^bs
    (4.1_rc6) (~)4.1_rc6^bs
    (4.1_rc7) (~)4.1_rc7^bs
    (4.1_rc8) (~)4.1_rc8^bs
      {build symlink}
    Homepage:            http://www.kernel.org
    Description:         The very latest -git version of the Linux kernel

eix -A sys-kernel/hardened-sources

• sys-kernel/hardened-sources

    Available versions:
    (3.2.68) 3.2.68^bs
    (3.2.69-r4) 3.2.69-r4^bs
    (3.2.69-r5) (~)3.2.69-r5^bs
    (3.2.69-r6) (~)3.2.69-r6^bs
    (3.2.69-r7) (~)3.2.69-r7^bs
    (3.14.35) 3.14.35^bs
    (3.14.43-r3) 3.14.43-r3^bs
    (3.14.43-r4) (~)3.14.43-r4^bs
    (3.14.44) (~)3.14.44^bs
    (3.14.45) (~)3.14.45^bs
    (3.18.9) 3.18.9^bs
    (4.0.4-r3) (~)4.0.4-r3^bs
    (4.0.4-r4) (~)4.0.4-r4^bs
    (4.0.5) (~)4.0.5^bs
    (4.0.5-r1) (~)4.0.5-r1^bs
    (4.0.6) (~)4.0.6^bs
      {build deblob symlink}
    Homepage:            http://www.gentoo.org/proj/en/hardened/
    Description:         Hardened kernel sources (kernel series 4.0)

eix -A sys-kernel/kccmp

• sys-kernel/kccmp

    Available versions:  0.3
    Homepage:            http://stoopidsimple.com/kccmp/
    Description:         A simple tool for comparing two linux kernel .config files

eix -A sys-kernel/kergen

• sys-kernel/kergen

    Available versions:  (~)0.1.1 {PYTHON_TARGETS="python3_3 python3_4"}
    Homepage:            https://github.com/nichoski/kergen
    Description:         Kernel config generator

eix -A sys-kernel/linux-docs

• sys-kernel/linux-docs

    Available versions:  (~)3.4.104 (~)3.10.58 (~)3.12.30 (~)3.14.22 (~)3.16.6 (~)3

.17.1 {html}

    Homepage:            http://www.kernel.org/
    Description:         Developer documentation generated from the Linux kernel

eix -A sys-kernel/linux-firmware

• sys-kernel/linux-firmware

    Available versions:  20140603 (~)20140809 20140902 (~)20141009 20150206 (~)2015

0320 **99999999 {savedconfig}

    Homepage:            http://git.kernel.org/?p=linux/kernel/git/firmware/linux-firmware.git
    Description:         Linux firmware files

eix -A sys-kernel/linux-headers [I] sys-kernel/linux-headers

    Available versions:  3.17-r1^bs 4.0^bs
    Installed versions:  4.0^bs(12:01:47 AM 05/18/2015)
    Homepage:            http://www.kernel.org/ http://www.gentoo.org/
    Description:         Linux system headers

eix -A sys-kernel/mips-sources

• sys-kernel/mips-sources

    Available versions:
    (3.19.6) ~*3.19.6^bs
    (4.0.1) ~*4.0.1^bs
      {build cobalt ip27 ip28 ip30 ip32r10k symlink}
    Homepage:            http://www.linux-mips.org/ http://www.gentoo.org/
    Description:         Linux-Mips GIT sources for MIPS-based machines, dated 20150418

eix -A sys-kernel/openvz-rhel6-stable

• sys-kernel/openvz-rhel6-stable

    Available versions:
    (2.6.32.042.106.4) 2.6.32.042.106.4^mbs
    (2.6.32.042.108.2) [M]2.6.32.042.108.2^mbs
      {binary}
    Homepage:            http://www.openvz.org
    Description:         Full Linux kernel sources - RHEL6 kernel with OpenVZ patchset

eix -A sys-kernel/openvz-sources

• sys-kernel/openvz-sources

    Available versions:
    (2.6.32.106.4) 2.6.32.106.4^bs
    (2.6.32.108.5) 2.6.32.108.5^bs
      {build symlink}
    Homepage:            http://www.openvz.org
    Description:         Kernel sources with OpenVZ patchset

eix -A sys-kernel/pf-sources

• sys-kernel/pf-sources

    Available versions:
    (2.6.31_p9) (~)2.6.31_p9^bs
    (2.6.32_p16) (~)2.6.32_p16^bs
    (2.6.33_p4) (~)2.6.33_p4^bs
    (2.6.34_p7) (~)2.6.34_p7^bs
    (2.6.35_p11) (~)2.6.35_p11^bs
    (2.6.36_p6) (~)2.6.36_p6^bs
    (2.6.37_p6) (~)2.6.37_p6^bs
    (2.6.38_p8) (~)2.6.38_p8^bs
    (2.6.39_p4) (~)2.6.39_p4^bs
    (3.0.7-r2) (~)3.0.7-r2^bs
    (3.1.6-r2) (~)3.1.6-r2^bs
    (3.2.7) (~)3.2.7^bs
    (3.3.6) (~)3.3.6^bs
    (3.4.6) (~)3.4.6^bs
    (3.5.4) (~)3.5.4^bs
    (3.6.12) (~)3.6.12^bs
    (3.7.5) (~)3.7.5^bs
    (3.8.2) (~)3.8.2^bs
    (3.9.5) (~)3.9.5^bs
    (3.10.1) (~)3.10.1^bs
    (3.11.4) (~)3.11.4^bs
    (3.12.4) (~)3.12.4^bs
    (3.13.3) (~)3.13.3^bs
    (3.14_p4) (~)3.14_p4^bs
    (3.15_p5) (~)3.15_p5^bs
    (3.16_p4) (~)3.16_p4^bs
    (3.17_p4) (~)3.17_p4^bs
    (3.19_p1) (~)3.19_p1^bs
    (4.0_p6) (~)4.0_p6^bs
      {build deblob experimental symlink}
    Homepage:            http://pf.natalenko.name/
    Description:         Linux kernel fork with new features, including the -ck patchset (BFS), BFQ, TuxOnIce and UKSM

eix -A sys-kernel/raspberrypi-image

• sys-kernel/raspberrypi-image

    Available versions:  ~*3.18.9_pre-r20150307^mbs ~*3.18.11_pre-r20150415^mbs ~*3

.18.13_pre-r20150510^mbs {doc dtb +firmware rpi1 rpi1b rpi1bplus +rpi2}

    Homepage:            https://github.com/raspberrypi/firmware
    Description:         Raspberry PI binary kernel, modules, dtb and firmware

eix -A sys-kernel/raspberrypi-sources

• sys-kernel/raspberrypi-sources

    Available versions:
    (3.10.1_pre-r20130719) ~*3.10.1_pre-r20130719^bs
    (3.10.9999) **3.10.9999^bs
    (3.12.9999) **3.12.9999^bs
    (3.14.9999) **3.14.9999^bs
    (3.18.9999) **3.18.9999^bs
    (3.19.9999) **3.19.9999^bs
      {build symlink}
    Homepage:            https://github.com/raspberrypi/linux
    Description:         Raspberry PI kernel sources

eix -A sys-kernel/rhel7-sources

• sys-kernel/rhel7-sources

    Available versions:  3.10.0.123.13.2^m 3.10.0.123.20.1^m 3.10.0.229.1.2^m 3.10.0.229.4.2^m {build symlink}
    Homepage:            http://www.redhat.com/
    Description:         Red Hat Enterprise Linux kernel sources

eix -A sys-kernel/rsbac-sources

• sys-kernel/rsbac-sources

    Available versions:  (3.10.7) (~)3.10.7^bs
      {build symlink}
    Homepage:            http://www.gentoo.org/proj/en/hardened/
    Description:         RSBAC kernel sources (kernel series 3.10)

eix -A sys-kernel/rt-sources

• sys-kernel/rt-sources

    Available versions:
    (3.14.36_p34) (~)3.14.36_p34^bs
    (3.18.11_p7) (~)3.18.11_p7^bs
      {build deblob symlink}
    Homepage:            http://www.kernel.org/ http://www.gentoo.org/ http://www.kernel.org/pub/linux/kernel/projects/rt/ http://www.fsfla.org/svn/fsfla/software/linux-libre/releases/tags
    Description:         Full Linux 3.18 kernel sources with the CONFIG_PREEMPT_RTpatch

eix -A sys-kernel/spl

• sys-kernel/spl

    Available versions:  (~)0.6.0_rc13-r2^t (~)0.6.0_rc14-r3^t (~)0.6.1-r3^t (~)0.6

.2^t (~)0.6.2-r1^t (~)0.6.2-r2^t (~)0.6.2-r3^t (~)0.6.2-r4^t (~)0.6.2-r5^t (~)0.6.3^ st (~)0.6.3-r1^st (~)0.6.4^st **9999^st {custom-cflags debug debug-log KERNEL="linux "}

    Homepage:            http://zfsonlinux.org/
    Description:         The Solaris Porting Layer is a Linux kernel module which provides many of the Solaris kernel APIs

eix -A sys-kernel/std-sources

• sys-kernel/std-sources

    Available versions:  (3.14.35) (~)3.14.35^m
    Homepage:            http://kernel.sysresccd.org/
    Description:         Kernel Sources and Patches for the System Rescue CD Standard Kernel

eix -A sys-kernel/tuxonice-sources

• sys-kernel/tuxonice-sources

    Available versions:
    (3.4.107) (~)3.4.107^bs
    (3.10.79) (~)3.10.79^bs
    (3.10.80) (~)3.10.80^bs
    (3.10.81) (~)3.10.81^bs
    (3.12.43) (~)3.12.43^bs
    (3.12.44) (~)3.12.44^bs
    (3.14.43) (~)3.14.43^bs
    (3.14.44) (~)3.14.44^bs
    (3.14.45) (~)3.14.45^bs
    (3.18.14) (~)3.18.14^bs
    (3.18.16) (~)3.18.16^bs
    (3.19.8) (~)3.19.8^bs
    (4.0.4) (~)4.0.4^bs
    (4.0.5) (~)4.0.5^bs
    (4.0.6) (~)4.0.6^bs
      {build experimental symlink}
    Homepage:            http://dev.gentoo.org/~mpagano/genpatches/ http://tuxonice.nigelcunningham.com.au/ https://github.com/NigelCunningham/tuxonice-kernel
    Description:         TuxOnIce + Gentoo patchset sources

eix -A sys-kernel/vanilla-sources

• sys-kernel/vanilla-sources

    Available versions:
    (3.2.69) (~)3.2.69^bs
    (3.4.108) (~)3.4.108^bs
    (3.10.81) (~)3.10.81^bs
    (3.12.44) (~)3.12.44^bs
    (3.14.45) (~)3.14.45^bs
    (3.18.16) (~)3.18.16^bs
    (4.0.6) (~)4.0.6^bs
    (4.1.0) (~)4.1.0^bs
      {build deblob symlink}
    Homepage:            http://www.kernel.org
    Description:         Full sources for the Linux kernel

eix -A sys-kernel/vserver-sources

• sys-kernel/vserver-sources

    Available versions:
    (2.3.0.36.32) 2.3.0.36.32^bs
    (2.3.6.5) (~)2.3.6.5^bs
    (2.3.6.8) (~)2.3.6.8^bs
    (2.3.6.11) (~)2.3.6.11^bs
    (2.3.6.14) (~)2.3.6.14^bs
    (2.3.7.3) (~)2.3.7.3^bs
    (2.3.7.4) (~)2.3.7.4^bs
      {build deblob symlink}
    Homepage:            http://www.gentoo.org/proj/en/vps/
    Description:         Full sources including Linux-VServer patchsets for the 3.18 kernel tree

eix -A sys-kernel/xbox-sources

• sys-kernel/xbox-sources

    Available versions:  (2.6.16.26) ~*2.6.16.26^bs
      {build symlink}
    Homepage:            http://www.kernel.org/ http://www.gentoo.org/
    Description:         Full sources for the Xbox Linux kernel

eix -A sys-kernel/zen-sources

• sys-kernel/zen-sources

    Available versions:
    (3.8.9999) **3.8.9999^bs
    (3.9.9999) **3.9.9999^bs
    (3.10.9999) **3.10.9999^bs
    (3.11.9999) **3.11.9999^bs
    (3.12.9999) **3.12.9999^bs
    (3.13.9999) **3.13.9999^bs
      {build symlink}
    Homepage:            http://zen-kernel.org
    Description:         The Zen Kernel Live Sources