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# Maintainer: Joan Figueras <ffigue at gmail dot com>
# Contributor: Torge Matthies <openglfreak at googlemail dot com>
# Contributor: Jan Alexander Steffens (heftig) <jan.steffens@gmail.com>
# Contributor: Yoshi2889 <rick.2889 at gmail dot com>
# Contributor: Tobias Powalowski <tpowa@archlinux.org>
# Contributor: Thomas Baechler <thomas@archlinux.org>
##
## The following variables can be customized at build time. Use env or export to change at your wish
##
## Example: env _microarchitecture=25 use_numa=n use_tracers=n use_pds=n makepkg -sc
##
## Look inside 'choose-gcc-optimization.sh' to choose your microarchitecture
## Valid numbers between: 0 to 25
## Default is: 0 => generic
## Good option if your package is for one machine: 25 => native
if [ -z ${_microarchitecture+x} ]; then
_microarchitecture=0
fi
##
## Disable NUMA since most users do not have multiple processors. Breaks CUDA/NvEnc.
## Archlinux and Xanmod enable it by default.
## Set variable "use_numa" to: n to disable (possibly increase performance)
## y to enable (stock default)
if [ -z ${use_numa+x} ]; then
use_numa=y
fi
##
## For performance you can disable FUNCTION_TRACER/GRAPH_TRACER. Limits debugging and analyzing of the kernel.
## Stock Archlinux and Xanmod have this enabled.
## Set variable "use_tracers" to: n to disable (possibly increase performance)
## y to enable (stock default)
if [ -z ${use_tracers+x} ]; then
use_tracers=y
fi
##
## Enable PDS CPU scheduler by default https://gitlab.com/alfredchen/linux-pds
## Set variable "use_pds" to: n to disable (stock Xanmod)
## y to enable
if [ -z ${use_pds+x} ]; then
use_pds=n
fi
pkgbase=linux-xanmod-lts
_srcname=linux
pkgver=4.19.40
xanmod=21
pkgrel=1
arch=(x86_64)
url="http://www.xanmod.org/"
license=(GPL2)
makedepends=(xmlto kmod inetutils bc libelf python-sphinx graphviz)
options=('!strip')
_srcname="linux-${pkgver}-xanmod${xanmod}"
source=(https://github.com/xanmod/linux/archive/${pkgver}-xanmod${xanmod}.tar.gz
60-linux.hook # pacman hook for depmod
90-linux.hook # pacman hook for initramfs regeneration
${pkgbase}.preset # standard config files for mkinitcpio ramdisk
choose-gcc-optimization.sh
0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch # Grabbed from linux-ck package
)
sha256sums=('9984510c23fbaab1ec08109fa4460f500cc3f155600b6845100172c5bb866bda'
'ae2e95db94ef7176207c690224169594d49445e04249d2499e9d2fbc117a0b21'
'75f99f5239e03238f88d1a834c50043ec32b1dc568f2cc291b07d04718483919'
'ad6344badc91ad0630caacde83f7f9b97276f80d26a20619a87952be65492c65'
'bae7b9253512ef5724629738bfd4460494a08566f8225b9d8ec544ea8cc2f3a5'
'36b1118c8dedadc4851150ddd4eb07b1c58ac5bbf3022cc2501a27c2b476da98')
_kernelname=${pkgbase#linux}
prepare() {
cd $_srcname
msg2 "Setting version..."
scripts/setlocalversion --save-scmversion
echo "-$pkgrel" > localversion.10-pkgrel
echo "$_kernelname" > localversion.20-pkgname
# Archlinux patches
local src
for src in "${source[@]}"; do
src="${src%%::*}"
src="${src##*/}"
[[ $src = *.patch ]] || continue
msg2 "Applying patch $src..."
patch -Np1 < "../$src"
done
# CONFIG_STACK_VALIDATION gives better stack traces. Also is enabled in all official kernel packages by Archlinux team
scripts/config --enable CONFIG_STACK_VALIDATION
# Enable IKCONFIG following Arch's philosophy
scripts/config --enable CONFIG_IKCONFIG \
--enable CONFIG_IKCONFIG_PROC
# User set. See at the top of this file
if [ "$use_tracers" = "n" ]; then
msg2 "Disabling FUNCTION_TRACER/GRAPH_TRACER..."
scripts/config --disable CONFIG_FUNCTION_TRACER \
--disable CONFIG_STACK_TRACER
fi
if [ "$use_numa" = "n" ]; then
msg2 "Disabling NUMA..."
scripts/config --disable CONFIG_NUMA
fi
if [ "$use_pds" = "y" ]; then
msg2 "Enabling PDS CPU scheduler by default..."
scripts/config --enable CONFIG_SCHED_PDS
fi
# Let's user choose microarchitecture optimization in GCC
${srcdir}/choose-gcc-optimization.sh $_microarchitecture
# This is intended for the people that want to build this package with their own config
# Put the file "myconfig" at the package folder to use this feature
if [ -f "${startdir}/myconfig" ]; then
msg2 "Using user CUSTOM config..."
cp -f "${startdir}"/myconfig .config
fi
make olddefconfig
make -s kernelrelease > ../version
msg2 "Prepared %s version %s" "$pkgbase" "$(<../version)"
}
build() {
cd $_srcname
make bzImage modules
}
_package() {
pkgdesc="The Linux kernel and modules with Xanmod patches"
depends=(coreutils linux-firmware kmod mkinitcpio)
optdepends=('crda: to set the correct wireless channels of your country')
backup=("etc/mkinitcpio.d/$pkgbase.preset")
install=linux.install
local kernver="$(<version)"
local modulesdir="$pkgdir/usr/lib/modules/$kernver"
cd $_srcname
msg2 "Installing boot image..."
# systemd expects to find the kernel here to allow hibernation
# https://github.com/systemd/systemd/commit/edda44605f06a41fb86b7ab8128dcf99161d2344
install -Dm644 "$(make -s image_name)" "$modulesdir/vmlinuz"
install -Dm644 "$modulesdir/vmlinuz" "$pkgdir/boot/vmlinuz-$pkgbase"
msg2 "Installing modules..."
make INSTALL_MOD_PATH="$pkgdir/usr" modules_install
# a place for external modules,
# with version file for building modules and running depmod from hook
local extramodules="extramodules$_kernelname"
local extradir="$pkgdir/usr/lib/modules/$extramodules"
install -Dt "$extradir" -m644 ../version
ln -sr "$extradir" "$modulesdir/extramodules"
# remove build and source links
rm "$modulesdir"/{source,build}
msg2 "Installing hooks..."
# sed expression for following substitutions
local subst="
s|%PKGBASE%|$pkgbase|g
s|%KERNVER%|$kernver|g
s|%EXTRAMODULES%|$extramodules|g
"
# hack to allow specifying an initially nonexisting install file
sed "$subst" "$startdir/$install" > "$startdir/$install.pkg"
true && install=$install.pkg
# fill in mkinitcpio preset and pacman hooks
sed "$subst" ../$pkgbase.preset | install -Dm644 /dev/stdin \
"$pkgdir/etc/mkinitcpio.d/$pkgbase.preset"
sed "$subst" ../60-linux.hook | install -Dm644 /dev/stdin \
"$pkgdir/usr/share/libalpm/hooks/60-$pkgbase.hook"
sed "$subst" ../90-linux.hook | install -Dm644 /dev/stdin \
"$pkgdir/usr/share/libalpm/hooks/90-$pkgbase.hook"
msg2 "Fixing permissions..."
chmod -Rc u=rwX,go=rX "$pkgdir"
}
_package-headers() {
pkgdesc="Header files and scripts for building modules for Xanmod Linux kernel"
local builddir="$pkgdir/usr/lib/modules/$(<version)/build"
cd $_srcname
msg2 "Installing build files..."
install -Dt "$builddir" -m644 Makefile .config Module.symvers System.map vmlinux
install -Dt "$builddir/kernel" -m644 kernel/Makefile
install -Dt "$builddir/arch/x86" -m644 arch/x86/Makefile
cp -t "$builddir" -a scripts
# add objtool for external module building and enabled VALIDATION_STACK option
install -Dt "$builddir/tools/objtool" tools/objtool/objtool
# add xfs and shmem for aufs building
mkdir -p "$builddir"/{fs/xfs,mm}
# ???
mkdir "$builddir/.tmp_versions"
msg2 "Installing headers..."
cp -t "$builddir" -a include
cp -t "$builddir/arch/x86" -a arch/x86/include
install -Dt "$builddir/arch/x86/kernel" -m644 arch/x86/kernel/asm-offsets.s
install -Dt "$builddir/drivers/md" -m644 drivers/md/*.h
install -Dt "$builddir/net/mac80211" -m644 net/mac80211/*.h
# http://bugs.archlinux.org/task/13146
install -Dt "$builddir/drivers/media/i2c" -m644 drivers/media/i2c/msp3400-driver.h
# http://bugs.archlinux.org/task/20402
install -Dt "$builddir/drivers/media/usb/dvb-usb" -m644 drivers/media/usb/dvb-usb/*.h
install -Dt "$builddir/drivers/media/dvb-frontends" -m644 drivers/media/dvb-frontends/*.h
install -Dt "$builddir/drivers/media/tuners" -m644 drivers/media/tuners/*.h
msg2 "Installing KConfig files..."
find . -name 'Kconfig*' -exec install -Dm644 {} "$builddir/{}" \;
msg2 "Removing unneeded architectures..."
local arch
for arch in "$builddir"/arch/*/; do
[[ $arch = */x86/ ]] && continue
echo "Removing $(basename "$arch")"
rm -r "$arch"
done
msg2 "Removing documentation..."
rm -r "$builddir/Documentation"
msg2 "Removing broken symlinks..."
find -L "$builddir" -type l -printf 'Removing %P\n' -delete
msg2 "Removing loose objects..."
find "$builddir" -type f -name '*.o' -printf 'Removing %P\n' -delete
msg2 "Stripping build tools..."
local file
while read -rd '' file; do
case "$(file -bi "$file")" in
application/x-sharedlib\;*) # Libraries (.so)
strip -v $STRIP_SHARED "$file" ;;
application/x-archive\;*) # Libraries (.a)
strip -v $STRIP_STATIC "$file" ;;
application/x-executable\;*) # Binaries
strip -v $STRIP_BINARIES "$file" ;;
application/x-pie-executable\;*) # Relocatable binaries
strip -v $STRIP_SHARED "$file" ;;
esac
done < <(find "$builddir" -type f -perm -u+x ! -name vmlinux -print0)
msg2 "Adding symlink..."
mkdir -p "$pkgdir/usr/src"
ln -sr "$builddir" "$pkgdir/usr/src/$pkgbase-$pkgver"
msg2 "Fixing permissions..."
chmod -Rc u=rwX,go=rX "$pkgdir"
}
pkgname=("${pkgbase}" "${pkgbase}-headers")
for _p in "${pkgname[@]}"; do
eval "package_$_p() {
$(declare -f "_package${_p#$pkgbase}")
_package${_p#$pkgbase}
}"
done
# vim:set ts=8 sts=2 sw=2 et:
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