Compilando pacotes com o arch linux, usando o AUR. Exemplo: compilar kernel

ilkyest · 14 de agosto de 2014

Pessoal, sou um dos integrantes do folding at home

http://forum.clubedohardware.com.br/forums/topic/1074921-seja-muito-bem-vindo-ao-maior-time-de-fh-da-am%C3%A9rica-latina-como-come%C3%A7ar-comece-por-aqui/

e tenho testado vários kerneis no arch. Uma pergunta muito interessante que tem vindo, é como compilar kerneis no arch.

Salvo outros pacotes, outras formulas, etc.... se algum pacote estiver disponível no AUR, ele é facilmente compilável.

Mas, vamos aos fatos. Eu compilei kerneis para o debian/ubuntu, o finado kurumin, e fedora, depois... migrei ao arch.

Vou recorrer ao tópico do @Hqxriven para tal

http://ubuntuforum-br.org/index.php/topic,29799.1620.html

exemplo para ubuntu/debian e derivados

Para o fedora

https://fedoraproject.org/wiki/Building_a_custom_kernel

buenas... e no arch? digo-vos... depende

Calma, eu explico.... o arch linux tem uma penca de kerneis a disposição, depende de qual "te gusta" mais... vamos conhecer? o AUR é uma suite mantida pela comunidade arch, donde os pacotes tem o padrão AUR

Formas de instalar:

1) tradicional e recomendavel. Procure o pacote no AUR, baixe o tarball, descompacte, edite, se necessário, o pkgbuild, e execute

makepkg

vamos com figuras agora...

https://aur.archlinux.org/

supomos que você quer compilar o kernel-pf

"em packages" à direita, digite linux-pf

abrirá esta página

https://aur.archlinux.org/packages/linux-pf/

Agora, à direita, clique em "download tarball"

o link direto está aqui

https://aur.archlinux.org/packages/li/linux-pf/linux-pf.tar.gz

Agora será baixado um arquivo, e dentro dele, após descompactar, teremos:

change-default-console-loglevel.patch  config  config.x86_64  linux.install  linux.preset  PKGBUILD

Todos estes arquivos são editáveis, com o kate, o nano, etc....

o pkgbuild é o que tem coisas interessantes... vamos editar? clique com o direito, e clique em abrir com..... no kde, pode ser o kate, no gnome o gedit, ou o nano em linha de comando, para kde, e gnome

# Maintainer: Christos Nouskas <nous at archlinux dot us>
# PKGBUILD assembled from kernel26
# Some lines from kernel26-bfs and kernel26-ck
# Credits to respective maintainers
_major=3
_minor=15
#_patchlevel=0
#_subversion=1
_basekernel=${_major}.${_minor}
_srcname=linux-${_major}.${_minor}
pkgbase=linux-pf
_pfrel=5
_kernelname=-pf
_pfpatchhome="http://pf.natalenko.name/sources/${_basekernel}/"
_pfpatchname="patch-${_basekernel}${_kernelname}${_pfrel}"

_CPUSUFFIXES_KBUILD=( CORE2 K7 K8 K10 BARCELONA BOBCAT BULLDOZER PILEDRIVER PSC ATOM PENTIUMII PENTIUMIII PENTIUMM PENTIUM4 COREI7 COREI7AVX COREAVXI COREAVX2 )
_CPUSUFFIXES=( core2 k7 k8 k10 barcelona bobcat bulldozer piledriver psc atom p2 p3 pm p4 nehalem sandybridge ivybridge haswell)

### PATCH AND BUILD OPTIONS
# taken from graysky linux-ck see: https://aur.archlinux.org/packages/linux-ck
# Set these variables to ANYTHING (yes or no or 1 or 0 or "I like icecream") to enable them
#

_NUMA_off=yes       # Disable NUMA in kernel config

### DOCS
# Starting with the 3.6.6-3 release, this package ships with the kernel-3x-gcc47-x.patch.
# This allows users an expanded scope of CPU specific options.
# Consult the following resources to understand which option is right for you application:
#
# http://en.gentoo-wiki.com/wiki/Safe_Cflags/Intel
# http://en.gentoo-wiki.com/wiki/Safe_Cflags/AMD
# http://www.linuxforge.net/docs/linux/linux-gcc.php
# http://gcc.gnu.org/onlinedocs/gcc/i386-and-x86_002d64-Options.html

# DETAILS FOR using 'make localmodconfig'
# As of mainline 2.6.32, running with this option will only build the modules that you currently have
# probed in your system VASTLY reducing the number of modules built and the build time to do it.
#
# WARNING - make CERTAIN that all modules are modprobed BEFORE you begin making the pkg!
#
# To keep track of which modules are needed for your specific system/hardware, give my module_db script
# a try: http://aur.archlinux.org/packages.php?ID=41689 Note that if you use my script, this PKGBUILD
# will auto run the 'sudo modprobed_db reload' for you to probe all the modules you have logged!
#
# More at this wiki page ---> https://wiki.archlinux.org/index.php/Modprobed_db

# DETAILS FOR running kernel's config
# Enabling this option will use the .config of the RUNNING kernel rather than the ARCH defaults.
# Useful when the package gets updated and you already went through the trouble of customizing your
# config options. NOT recommended when a new kernel is released, but again, convenient for package bumps.

# DRTAILS FOR _NUMA_off=yes
# Since 99.9% of users do not have multiple CPUs but do have multiple cores in one CPU
# see, https://bugs.archlinux.org/task/31187

pkgname=('linux-pf')
true && pkgname=('linux-pf' 'linux-pf-headers')
pkgver=${_basekernel}.${_pfrel}
pkgrel=1
arch=('i686' 'x86_64')
url="http://pf.natalenko.name/"
license=('GPL2')
options=('!strip')
makedepends=('git' 'xmlto' 'docbook-xsl' 'xz' 'bc')
source=("ftp://www.kernel.org/pub/linux/kernel/v${_major}.x/linux-${_basekernel}.tar.xz"
   'config' 'config.x86_64'       # the main kernel config files
   'linux.preset'           # standard config files for mkinitcpio ramdisk
   'change-default-console-loglevel.patch'
   "${_pfpatchhome}${_pfpatchname}.xz"   # the -pf patchset
)

_aufs3git="http://git.code.sf.net/p/aufs/aufs3-standalone"
_aufs3name=aufs3-standalone
# '

prepare() {
cd "${srcdir}/linux-${_basekernel}"
# This is for me, to test the PKGBUILD
     msg "Applying pf-kernel patch"
     patch -Np1 < ${srcdir}/${_pfpatchname}
     msg "Fetching and applying aufs3 patches"
     git clone ${_aufs3git} ${_aufs3name}
     cd ${_aufs3name}
     git checkout origin/aufs${_basekernel} || _aufs3checkout=KRAKRA
     if [[ ${_aufs3checkout} = "KRAKRA" ]]; then
   echo
        msg "AUFS3 not yet ported to version ${_basekernel}!"
        msg "Skipping related patches."
   echo
   cd ..
     else
#        mkdir -p "${pkgdir}/usr/lib/modules/build/${_kernver}/include"
#        mv include/linux/Kbuild "${pkgdir}/usr/lib/modules/build/${_kernver}/include/"
   rm include/uapi/linux/Kbuild
   cd ..
   cp -a ${_aufs3name}/{Documentation,fs,include} ${srcdir}/linux-${_basekernel}/
   msg "Patching aufs3"
   for _patch in ${_aufs3name}/*.patch; do
        patch -Np1 -i ${_patch} || _aufs3fail=KRAKRA
        done
        if [[ ${_aufs3fail} = "KRAKRA" ]]; then
        echo
            msg "Not all aufs3 patches applied correctly. Ignore this if you won't use AUFS."
            msg "Otherwise, press CTRL-C now and fix manually"
            echo
        fi
    fi

# Interactive governor patch
# broken for now
#   msg "Interactice CPU governor patch"
#   mv ${srcdir}/gist*/gistfile1.diff ${srcdir}
#   patch -Np1 < ${srcdir}/gistfile1.diff

# linux-ARCH patches

# add latest fixes from stable queue, if needed
# http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git

# set DEFAULT_CONSOLE_LOGLEVEL to 4 (same value as the 'quiet' kernel param)
# remove this when a Kconfig knob is made available by upstream
# (relevant patch sent upstream: https://lkml.org/lkml/2011/7/26/227)
patch -Np1 -i "${srcdir}/change-default-console-loglevel.patch"

# end linux-ARCH patches

# added gcc 4.7.1 support for Kconfig and menuconfig
# now inclued in pf patchset
if [ "$CARCH" = "x86_64" ]; then
   cat "${startdir}/config.x86_64" >| .config
else
   cat "${startdir}/config" >| .config
fi

sed -ri "s|SUBLEVEL = 0|SUBLEVEL = $_pfrel|" Makefile

# Set EXTRAVERSION to -pf
sed -ri "s|^(EXTRAVERSION =).*|\1|" Makefile
_arch=$CARCH

# disable NUMA since 99.9% of users do not have multiple CPUs but do have multiple cores in one CPU
# see, https://bugs.archlinux.org/task/31187
if [ -n "$_NUMA_off" ] && [ "${CARCH}" = "x86_64" ]; then
     sed -i -e 's/CONFIG_NUMA=y/# CONFIG_NUMA is not set/' \
      -i -e '/CONFIG_AMD_NUMA=y/d' \
      -i -e '/CONFIG_X86_64_ACPI_NUMA=y/d' \
      -i -e '/CONFIG_NODES_SPAN_OTHER_NODES=y/d' \
      -i -e '/# CONFIG_NUMA_EMU is not set/d' \
      -i -e '/CONFIG_NODES_SHIFT=6/d' \
      -i -e '/CONFIG_NEED_MULTIPLE_NODES=y/d' \
      -i -e '/CONFIG_USE_PERCPU_NUMA_NODE_ID=y/d' \
      -i -e '/CONFIG_ACPI_NUMA=y/d' ./.config
fi

# Don't run depmod on 'make install'. We'll do this ourselves in packaging
sed -i '2iexit 0' scripts/depmod.sh

# If the following is set, stop right there. We only need the headers for
# dependent drivers' compiling (nvidia, virtualbox etc)

# get kernel version
#make prepare
}

build() {
cd "${srcdir}/linux-${_basekernel}"
#----------------------------------------
if [[ "$_BATCH" != "y" ]]; then       # for batch building
    echo
    echo "======================================================="
    msg "You might be prompted below for some config options"
    echo "======================================================="
    echo
    msg "Hit <Y> to use your running kernel's config"
    echo "    (needs IKCONFIG and IKCONFIG_PROC)"
    msg "Hit <L> to run 'make localmodconfig'"
    msg "Hit <N> (or just <ENTER>) to build an all-inclusive kernel like stock -ARCH"
    echo "    (warning: it can take a looong time)"
    echo
    read answer
    shopt -s nocasematch
    if [[ "$answer" = "y" ]]; then
      if [[ -s /proc/config.gz ]]; then
   msg "Extracting config from /proc/config.gz..."
   zcat /proc/config.gz >| ./.config
      else
   msg "running 'sudo modprobe configs'"
   sudo modprobe configs
        if [[ -s /proc/config.gz ]]; then
      msg "Extracting config from /proc/config.gz..."
      zcat /proc/config.gz >| ./.config
   else
      msg "You kernel was not compiled with IKCONFIG_PROC."
      msg "Attempting to run /usr/bin/modprobed_db recall from modprobe_db..."
      if [ -e /usr/bin/modprobed_db ]; then
        sudo /usr/bin/modprobed_db recall
      else
        msg "modprobed_db not installed, running make localmodconfig instead..."
        make localmodconfig
      fi
        fi
      fi
    elif [[ "$answer" = "l" ]]; then
      # Copied from kernel26-ck's PKGBUILD
      msg "Attempting to run /usr/bin/reload_database with sudo from modprobe_db..."
      if [ -e /usr/bin/modprobed_db ]; then
   sudo /usr/bin/modprobed_db recall
      fi
      msg "Running 'make localmodconfig'..."
      make localmodconfig
    else
      msg "Using stock ARCH kernel .config (with BFS, BFQ and TuxOnIce enabled)."
    fi

    # Make some good use of MAKEFLAGS
    # MAKEFLAGS=`grep -v '#' /etc/makepkg.conf | grep MAKEFLAGS= | sed s/MAKEFLAGS=// | sed s/\"//g`

    # make prepare

    # Options for additional configuration
    echo
    msg "Kernel configuration options before build:"
    echo "    <M> make menuconfig (console menu)"
    echo "    <N> make nconfig (newer alternative to menuconfig)"
    echo "    <G> make gconfig (needs gtk)"
    echo "    <X> make xconfig (needs qt)"
    echo "    <O> make oldconfig"
    echo "    <L> make localyesconfig"
    echo "    <ENTER> to skip configuration and use stock -ARCH defaults"
    read answer
    case "$answer" in
      m) make menuconfig
   ;;
      g) make gconfig
   ;;
      x) make xconfig
   ;;
      n) make nconfig
   ;;
      o) make oldconfig
      ;;
      l) make localyesconfig
   ;;
      default)
   ;;
    esac
    cp -v .config ${startdir}/config.local
    for _cpusuffix_kbuild in ${_CPUSUFFIXES_KBUILD[@]} ; do
   _egrepstring="${_egrepstring}M${_cpusuffix_kbuild}=y|"
    done
    CPU=$(egrep "${_egrepstring}CONFIG_GENERIC_CPU=y|M686=y|CONFIG_MNATIVE=y" ./.config)
    CPU=$(sed -e "s/CONFIG_M$.*$=y/\1/" <<<$CPU)
    CPU=$(sed -e "s/CONFIG_GENERIC_CPU=y/GENERIC/" <<<$CPU)
    CPU=$(sed -e "s/^686$/GENERIC/" <<<$CPU)
    cp -f .config ${startdir}/config.$CPU-$CARCH

# Give option to rename package according to CPU
    echo
    if [[ "$CPU" != "GENERIC" ]]; then
      lcpu=$(tr '[:upper:]' '[:lower:]' <<< $CPU)
      lcpu=$(sed -e "s/entium//" <<<$lcpu)
      echo "=============================================================="
      msg "An non-generic CPU was selected for this kernel."
      echo
      msg "Hit <G>     : to create a generic package named linux-pf"
      msg "Hit <ENTER> : to create a package named after the selected CPU"
      msg "               (linux-pf-${lcpu} - recommended default)"
      echo
      msg "This option affects ONLY the package name. Whether or not the"
      msg "kernel is optimized was determined at the previous config step."
      msg "Also note that CPUs newer than CORE2 or K8 will be replaced by"
      msg "by core2 or k8 respectively in the package name."
      echo "=============================================================="
      read answer
      shopt -s nocasematch
      if [[ "$answer" != "g" ]]; then
   export _PKGOPT=y
      fi
    fi
fi   # batch check ends here
export CPU
#----------------------------------------

# Strip config of uneeded localversion
if [ "${_kernelname}" != "" ]; then
    sed -i "s|CONFIG_LOCALVERSION=.*|CONFIG_LOCALVERSION=\"${_kernelname}\"|g" ./.config
    sed -i "s/CONFIG_LOCALVERSION_AUTO=.*/CONFIG_LOCALVERSION_AUTO=n/" ./.config
fi

# rewrite configuration
yes "" | make config >/dev/null

# Build
# Want extreme and non-sensical optimization? Uncomment the following line!
# export KCFLAGS="-march=native -Ofast"
make ${MAKEFLAGS} LOCALVERSION= bzImage modules
}

package_linux-pf() {
_pkgdesc="Linux kernel and modules with the pf-kernel patch [-ck patchset (BFS included), TuxOnIce, BFQ] and aufs3."
pkgdesc=${_pkgdesc}
groups=('base')
backup=(etc/mkinitcpio.d/${pkgbase}.preset)
depends=('coreutils' 'linux-firmware' 'kmod>=9-2' 'mkinitcpio>=0.7')
optdepends=('linux-docs: Kernel hackers manual - HTML documentation that comes with the Linux kernel.'
        'crda: to set the correct wireless channels of your country'
        'pm-utils: utilities and scripts for suspend and hibernate power management'
        'tuxonice-userui: TuxOnIce userspace user interface'
        'hibernate-script: set of scripts for managing TuxOnIce, hibernation and suspend to RAM'
        'nvidia-pf: NVIDIA drivers for linux-pf'
        'nvidia-beta-all: NVIDIA drivers for all installed kernels'
        'modprobed_db: Keeps track of EVERY kernel module that has ever been probed. Useful for make localmodconfig.')
#provides=(${pkgbase}=${_basekernel} 'aufs3')   # for $pkgname-optimized
provides=(${pkgbase}=${_basekernel} 'aufs3')
# below 'provides' is for when you have no other kernel (which is a bad idea anyway)
# provides=(${pkgbase}=${_basekernel} 'linux=${pkgver}' 'aufs3')
# If generic build, then conflict with all optimized ones
conflicts=()
for _cpusuffix in $_CPUSUFFIXES ; do
   conflicts+=${pkgbase}-${_cpusuffix}
done
replaces=('kernel26-pf' 'aufs3')
backup=("etc/mkinitcpio.d/${pkgbase}.preset")
install='linux.install'

#'
cd "${srcdir}/linux-${_basekernel}"

# Remove undeeded aufs3 git tree
rm -fr aufs3 2>/dev/null

# work around the AUR parser
# This allows building cpu-optimized packages with according package names.
# Useful for repo maintainers.
headers="headers"
pkgnameopt="${pkgbase}"       # this MUST be outside the following 'if'
if [[ "$_PKGOPT" = "y" ]]; then   # package naming according to optimization
    case $CPU in
     CORE2)
         pkgname="${pkgbase}-core2"
         pkgdesc="${_pkgdesc} Intel Core2 optimized."
         ;;
     K7)
        pkgname="${pkgbase}-k7"
        pkgdesc="${_pkgdesc} AMD K7 optimized."
        ;;
     K8)
         pkgname="${pkgbase}-k8"
         pkgdesc="${_pkgdesc} AMD K8 optimized."
   ;;
     K10)
         pkgname="${pkgbase}-k10"
   pkgdesc="§{_pkgdesc} AMD K10 optimized"
         ;;
     BARCELONA)
         pkgname="${pkgbase}-barcelona"
         pkgdesc="${_pkgdesc} AMD Barcelona optimized."
   ;;
     BOBCAT)
   pkgname="${pkgbase}-bobcat"
   pkgdesc="${_pkgdesc} AMD Bobcat optimized."
   ;;
     BULLDOZER)
   pkgname="${pkgbase}-bulldozer"
   pkgdesc="${_pkgdesc} AMD Bulldozer optimized."
   ;;
     PILEDRIVER)
   pkgname="${pkgbase}-piledriver"
   pkgdesc="${_pkgdesc} AMD Piledriver optimized."
   ;;
     PSC)
         pkgname="${pkgbase}-psc"
         pkgdesc="${_pkgdesc} Intel Pentium4/D/Xeon optimized."
         ;;
     ATOM)
         pkgname="${pkgbase}-atom"
         pkgdesc="${_pkgdesc} Intel Atom optimized."
         ;;
     PENTIUMII)
         pkgname="${pkgbase}-p2"
         pkgdesc="${_pkgdesc} Intel Pentium2 optimized."
         ;;
     PENTIUMIII)
         pkgname="${pkgbase}-p3"
         pkgdesc="${_pkgdesc} Intel Pentium3 optimized."
         ;;
     PENTIUMM)
         pkgname="${pkgbase}-pm"
         pkgdesc="${_pkgdesc} Intel Pentium-M optimized."
         ;;
     PENTIUM4)
         pkgname="${pkgbase}-p4"
         pkgdesc="${_pkgdesc} Intel Pentium4 optimized."
         ;;
     COREI7)
   pkgname="${pkgbase}-nehalem"
         pkgdesc="${_pkgdesc} Intel Core Nehalem optimized."
   ;;
     COREI7AVX)
         pkgname="${pkgbase}-sandybridge"
         pkgdesc="${_pkgdesc} Intel 2nd Gen Core processors including Sandy Bridge."
   ;;
     COREAVXI)
         pkgname="${pkgbase}-ivybridge"
         pkgdesc="${_pkgdesc} Intel 3rd Gen Core processors including Ivy Bridge."
   ;;
     COREAVX2)
         pkgname="${pkgbase}-haswell"
         pkgdesc="${_pkgdesc} Intel AVX-2 processors including Haswell."
   ;;
     default)
# Note to me: DO NOT EVER REMOVE THIS. It's for the AUR PKGBUILD parser.
         pkgname="${pkgbase}"
         pkgdesc="Linux kernel and modules with the pf-kernel patch [-ck patchset (BFS included), TuxOnIce, BFQ] and aufs3"
         ;;
    esac

# If optimized build, conflict with generic and other optimized ones

if [[ "$pkgname" != "$pkgbase" ]]; then
   pkgnameopt="${pkgname}"       # this MUST be inside this if-fi
   pkgname="${pkgbase}"
   echo pkgname $pkgname
   cpuopt=`sed -e "s/linux-pf-//" <<<$pkgnameopt`       # get suffix
   cpuoptdesc=`sed -e "s/${_pkgdesc}//" <<<$pkgdesc`   # get description
   conflicts=(${conflicts[@]/linux-pf-${cpuopt}/})       # remove current
   conflicts=(${conflicts[@]/linux-pf-headers-${cpuopt}/})   # remove current's headers
   export cpuopt cpuoptdesc
fi

# second batch check ends here
fi

# Pass conflicts array to linux-pf-headers() BEFORE adding generic linux-pf or headers will conflict
export _conflicts=${conflicts[@]}
conflicts=('linux-pf' 'kernel26-pf' ${conflicts[@]})   # add generic packages

echo
echo "    ========================================"
msg "The packages will be named ${pkgnameopt} and"
if [[ "$cpuopt" ]]; then
       msg "and ${pkgbase}-${headers}-${cpuopt}"
else
       msg "and ${pkgbase}-${headers}"
fi
msg "${pkgdesc}"
echo "    ========================================"
echo

### package_linux-pf

cd "${srcdir}/linux-${_basekernel}"

KARCH=x86

echo # get kernel version
   _kernver="$(make LOCALVERSION= kernelrelease)"

### c/p from linux-ARCH

mkdir -p "${pkgdir}"/{lib/modules,lib/firmware,boot}
make LOCALVERSION= INSTALL_MOD_PATH="${pkgdir}" modules_install
cp arch/$KARCH/boot/bzImage "${pkgdir}/boot/vmlinuz-${pkgbase}"

# install fallback mkinitcpio.conf file and preset file for kernel
install -D -m644 "${srcdir}/linux.preset" "${pkgdir}/etc/mkinitcpio.d/${pkgbase}.preset"

# set correct depmod command for install
#sed \
# -e "s/KERNEL_NAME=.*/KERNEL_NAME=${_kernelname}/" \
# -e "s/KERNEL_VERSION=.*/KERNEL_VERSION=${_kernver}/" \
# -i "${startdir}/linux.install"
   sed \
    -e "1s|'linux.*'|'${pkgbase}'|" \
    -e "s|ALL_kver=.*|ALL_kver=\"/boot/vmlinuz-${pkgbase}\"|" \
    -e "s|default_image=.*|default_image=\"/boot/initramfs-${pkgbase}.img\"|" \
    -e "s|fallback_image=.*|fallback_image=\"/boot/initramfs-${pkgbase}-fallback.img\"|" \
    -i "${pkgdir}/etc/mkinitcpio.d/${pkgbase}.preset"

# remove build and source links
rm -f "${pkgdir}"/lib/modules/${_kernver}/{source,build}
# remove the firmware
rm -rf "${pkgdir}/lib/firmware"
# gzip -9 all modules to save 100MB of space
find "${pkgdir}" -name '*.ko' -exec gzip -9 {} \;
# make room for external modules
ln -s "../extramodules-${_basekernel}${_kernelname:--ARCH}" "${pkgdir}/lib/modules/${_kernver}/extramodules"
# add real version for building modules and running depmod from post_install/upgrade
mkdir -p "${pkgdir}/lib/modules/extramodules-${_basekernel}${_kernelname:--ARCH}"
echo "${_kernver}" > "${pkgdir}/lib/modules/extramodules-${_basekernel}${_kernelname:--ARCH}/version"

# Now we call depmod...
depmod -b "$pkgdir" -F System.map "$_kernver"
# move module tree /lib -> /usr/lib
mkdir -p "${pkgdir}/usr"
mv "$pkgdir/lib" "$pkgdir/usr"
# add vmlinux
install -D -m644 vmlinux "${pkgdir}/usr/lib/modules/build/${_kernver}/vmlinux"

# end c/p

###
# Trick the AUR parser to accept split PKGBUILD
true && pkgname="${pkgnameopt}"
}

### package_linux-pf-headers
package_linux-pf-headers() {
pkgdesc="Header files and scripts for building modules for linux-pf kernel."
depends=('linux-pf')
conflicts=( ${_conflicts[@]} )
for _cpusuffix in $_CPUSUFFIXES ; do
    conflicts+=linux-pf-headers-$_cpusuffix
done
[[ ${cpuopt} ]] && pkgname=${pkgname}-${cpuopt} && depends=${depends}-${cpuopt}
[[ ${cpuoptdesc} ]] && pkgdesc=${pkgdesc}${cpuoptdesc}
provides=('linux-pf-headers')
cd "${srcdir}/linux-${_basekernel}"
# c/p from linux-ARCH

install -dm755 "${pkgdir}/usr/lib/modules/${_kernver}"

cd "${srcdir}/${_srcname}"
install -D -m644 Makefile \
    "${pkgdir}/usr/lib/modules/${_kernver}/build/Makefile"
install -D -m644 kernel/Makefile \
    "${pkgdir}/usr/lib/modules/${_kernver}/build/kernel/Makefile"
install -D -m644 .config \
    "${pkgdir}/usr/lib/modules/${_kernver}/build/.config"

mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/include"

for i in acpi asm-generic config crypto drm generated keys linux math-emu \
    media net pcmcia scsi sound trace uapi video xen; do
    cp -a include/${i} "${pkgdir}/usr/lib/modules/${_kernver}/build/include/"
done

# copy arch includes for external modules
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/x86"
cp -a arch/x86/include "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/x86/"

# copy files necessary for later builds, like nvidia and vmware
cp Module.symvers "${pkgdir}/usr/lib/modules/${_kernver}/build"
cp -a scripts "${pkgdir}/usr/lib/modules/${_kernver}/build"

# fix permissions on scripts dir
chmod og-w -R "${pkgdir}/usr/lib/modules/${_kernver}/build/scripts"
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/.tmp_versions"

mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/kernel"

cp arch/${KARCH}/Makefile "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/"

if [ "${CARCH}" = "i686" ]; then
    cp arch/${KARCH}/Makefile_32.cpu "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/"
fi

cp arch/${KARCH}/kernel/asm-offsets.s "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/kernel/"

# add docbook makefile
install -D -m644 Documentation/DocBook/Makefile \
    "${pkgdir}/usr/lib/modules/${_kernver}/build/Documentation/DocBook/Makefile"

# add dm headers
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/md"
cp drivers/md/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/md"

# add inotify.h
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/include/linux"
cp include/linux/inotify.h "${pkgdir}/usr/lib/modules/${_kernver}/build/include/linux/"

# add wireless headers
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/net/mac80211/"
cp net/mac80211/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/net/mac80211/"

# add dvb headers for external modules
# in reference to:
# http://bugs.archlinux.org/task/9912
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-core"
cp drivers/media/dvb-core/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-core/"
# and...
# http://bugs.archlinux.org/task/11194
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/include/config/dvb/"
cp include/config/dvb/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/include/config/dvb/"

# add dvb headers for http://mcentral.de/hg/~mrec/em28xx-new
# in reference to:
# http://bugs.archlinux.org/task/13146
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-frontends/"
cp drivers/media/dvb-frontends/lgdt330x.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-frontends/"
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/i2c/"
cp drivers/media/i2c/msp3400-driver.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/i2c/"

# add dvb headers
# in reference to:
# http://bugs.archlinux.org/task/20402
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/usb/dvb-usb"
cp drivers/media/usb/dvb-usb/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/usb/dvb-usb/"
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-frontends"
cp drivers/media/dvb-frontends/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-frontends/"
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/tuners"
cp drivers/media/tuners/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/tuners/"

# add xfs and shmem for aufs building
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/fs/xfs"
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/mm"
cp fs/xfs/xfs_sb.h "${pkgdir}/usr/lib/modules/${_kernver}/build/fs/xfs/xfs_sb.h"

# copy in Kconfig files
for i in $(find . -name "Kconfig*"); do
    mkdir -p "${pkgdir}"/usr/lib/modules/${_kernver}/build/`echo ${i} | sed 's|/Kconfig.*||'`
    cp ${i} "${pkgdir}/usr/lib/modules/${_kernver}/build/${i}"
done

chown -R root.root "${pkgdir}/usr/lib/modules/${_kernver}/build"
find "${pkgdir}/usr/lib/modules/${_kernver}/build" -type d -exec chmod 755 {} \;

# strip scripts directory
find "${pkgdir}/usr/lib/modules/${_kernver}/build/scripts" -type f -perm -u+w 2>/dev/null | while read binary ; do
    case "$(file -bi "${binary}")" in
      *application/x-sharedlib*) # Libraries (.so)
        /usr/bin/strip ${STRIP_SHARED} "${binary}";;
      *application/x-archive*) # Libraries (.a)
        /usr/bin/strip ${STRIP_STATIC} "${binary}";;
      *application/x-executable*) # Binaries
        /usr/bin/strip ${STRIP_BINARIES} "${binary}";;
    esac
done

# remove unneeded architectures
rm -rf "${pkgdir}"/usr/lib/modules/${_kernver}/build/arch/{alpha,arc,arm,arm26,arm64,avr32,blackfin,c6x,cris,frv,h8300,hexagon,ia64,m32r,m68k,m68knommu,metag,mips,microblaze,mn10300,openrisc,parisc,powerpc,ppc,s390,score,sh,sh64,sparc,sparc64,tile,unicore32,um,v850,xtensa}
# end c/p

# Add version.h for dumb binary blob installers which aren't
cd "${pkgdir}/usr/lib/modules/${_kernver}/build/include/linux/"
[[ -e version.h ]] || ln -s ../generated/uapi/linux/version.h

}

# Work around the AUR parser
pkgdesc="Linux kernel and modules with the pf-kernel patch [-ck patchset (BFS included), TuxOnIce, BFQ] and aufs3"

# makepkg -g >>PKGBUILD
sha256sums=('c3927e87be4040fa8aca1b58663dc0776aaf00485604ff88a623be2f3fb07794'
            '592cc3fc28e365f0d1913a10a4db36b4754a8014bcfcb688cdba94a316214b91'
            'b3f432143bee1f21af69e211b6a20724211e6101af9c2f91eb1191c3cf196963'
            '82d660caa11db0cd34fd550a049d7296b4a9dcd28f2a50c81418066d6e598864'
            'faced4eb4c47c4eb1a9ee8a5bf8a7c4b49d6b4d78efbe426e410730e6267d182'
            '4f625dc39c23bedf5e8a484704175ec0dec59d2703f674d236acda8102d686cc')

não é minha função aqui dizer o que significa cada opção... apenas dar um briefing de como se faz no jeitão arch de ser. Geralmente quem se aventura em kérneis, é porque conhece o que significa isso... então as opções acima são alteráveis, e após, salve... e execute o "makepkg"

nunca execute o makepkg como root... não é recomendável, e nem vai sem a opção "-as root"

Outro exemplo... o pacote fahcontrol, que controla o folding no linux

página no AUR

https://aur.archlinux.org/packages/fahcontrol/

tarball aqui:

https://aur.archlinux.org/packages/fa/fahcontrol/fahcontrol.tar.gz

ao ser baixado, o único arquivo dentro do tarball é o pkgbuild... que contem

pkgname=fahcontrol
pkgver=7.4.4
pkgrel=2
pkgdesc='A Graphical User Interface (GUI)for Folding@Home'
url="http://folding.stanford.edu/English/HomePage"
arch=('i686' 'x86_64')
license=('GPL3')
depends=('gtk2' 'python2' 'pygtk' 'glib2' 'pango')
options=('!docs' '!libtool')
source=(https://fah-web.stanford.edu/file-releases/public/release/fahcontrol/debian-testing-64bit/v7.4/fahcontrol_7.4.4-1_all.deb)
md5sums=('f8278d80824d7da65c5b34136a18a0de')

# Moronic server
DLAGENTS=("https::/usr/bin/curl -k -o %o %u")

package() {
cd ${srcdir}
tar -xf data.tar.gz

# python2 fixes
cd ${srcdir}/usr/bin/
for _file in $(find . -name 'FAHControl' -print); do
    sed -i 's_^#!.*/usr/bin/python_#!/usr/bin/python2_' "${_file}"
    sed -i 's_^#!.*/usr/bin/env.*python_#!/usr/bin/env python2_' "${_file}"
   done

cd ${srcdir}
install -dm755 ${pkgdir}/usr/lib/python2.7/site-packages/fah
cp -R ${srcdir}/usr/share/pyshared/fah/ ${pkgdir}/usr/lib/python2.7/site-packages/
install -D -m0755 ${srcdir}/usr/bin/FAHControl ${pkgdir}/usr/bin/FAHControl
install -D -m0644 ${srcdir}/usr/share/pixmaps/FAHControl.png ${pkgdir}/usr/share/pixmaps/FAHControl.png
install -D -m0644 ${srcdir}/usr/share/applications/FAHControl.desktop ${pkgdir}/usr/share/applications/FAHControl.desktop
}

# vim:set ts=2 sw=2 et:

md5sum, que tem no kernel, e tem neste pacote, é a certeza de que o pacote foi baixado corretamente, sem falhas... o pkgbuild informa, e o makepkg verificará... se der erro... será acusado e o pacote não segue adiante.

Perguntas bem vindas... por enquanto é só um briefing, como vos falei