path: root/PKGBUILD

# Maintainer: dangersalad <paul@dangersalad.com>
# Kernel Maintainer: Jan Alexander Steffens (heftig) <jan.steffens@gmail.com>

pkgbase=linux-openrgb
pkgver=5.6.13.arch1
pkgrel=1
pkgdesc='Linux with OpenRGB patches'
_srctag=v${pkgver%.*}-${pkgver##*.}
url="https://git.archlinux.org/linux.git/log/?h=$_srctag"
arch=(x86_64)
license=(GPL2)
makedepends=(
    bc kmod libelf
    xmlto python-sphinx python-sphinx_rtd_theme graphviz imagemagick
    git
)
options=('!strip')
_srcname=archlinux-linux
source=(
    "$_srcname::git+https://git.archlinux.org/linux.git?signed#tag=$_srctag"
    "https://gitlab.com/CalcProgrammer1/OpenRGB/-/raw/master/OpenRGB.patch"
    config         # the main kernel config file
    sphinx-workaround.patch
)
validpgpkeys=(
    'ABAF11C65A2970B130ABE3C479BE3E4300411886'  # Linus Torvalds
    '647F28654894E3BD457199BE38DBBDC86092693E'  # Greg Kroah-Hartman
    '8218F88849AAC522E94CF470A5E9288C4FA415FA'  # Jan Alexander Steffens (heftig)
)
sha256sums=('SKIP'
            'e7d724ac15daf428aa1e6a03737e5c1d040892d55fda8a66897fcac9323f285c'
            '011be0a07376f10b1420a435099ad1463a5bf26cd190ee21d7d2701187ee31bf'
            '8cb21e0b3411327b627a9dd15b8eb773295a0d2782b1a41b2a8839d1b2f5778c')

export KBUILD_BUILD_HOST=archlinux
export KBUILD_BUILD_USER=$pkgbase
export KBUILD_BUILD_TIMESTAMP="$(date -Ru${SOURCE_DATE_EPOCH:+d @$SOURCE_DATE_EPOCH})"

prepare() {
    cd $_srcname

    echo "Setting version..."
    scripts/setlocalversion --save-scmversion
    echo "-$pkgrel" > localversion.10-pkgrel
    echo "${pkgbase#linux}" > localversion.20-pkgname

    local src
    for src in "${source[@]}"; do
        src="${src%%::*}"
        src="${src##*/}"
        [[ $src = *.patch ]] || continue
        echo "Applying patch $src..."
        patch -Np1 < "../$src"
    done

    echo "Setting config..."
    cp ../config .config
    make olddefconfig

    make -s kernelrelease > version
    echo "Prepared $pkgbase version $(<version)"
}

build() {
    cd $_srcname
    make -j15 all
    make htmldocs
}

_package() {
    pkgdesc="The $pkgdesc kernel and modules"
    depends=(coreutils kmod initramfs)
    optdepends=('crda: to set the correct wireless channels of your country'
                'linux-firmware: firmware images needed for some devices')
    provides=(VIRTUALBOX-GUEST-MODULES WIREGUARD-MODULE)
    replaces=(virtualbox-guest-modules-arch wireguard-arch)

    cd $_srcname
    local kernver="$(<version)"
    local modulesdir="$pkgdir/usr/lib/modules/$kernver"

    echo "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"

    # Used by mkinitcpio to name the kernel
    echo "$pkgbase" | install -Dm644 /dev/stdin "$modulesdir/pkgbase"

    echo "Installing modules..."
    make INSTALL_MOD_PATH="$pkgdir/usr" modules_install

    # remove build and source links
    rm "$modulesdir"/{source,build}
}

_package-headers() {
    pkgdesc="Headers and scripts for building modules for the $pkgdesc kernel"

    cd $_srcname
    local builddir="$pkgdir/usr/lib/modules/$(<version)/build"

    echo "Installing build files..."
    install -Dt "$builddir" -m644 .config Makefile Module.symvers System.map \
            localversion.* version vmlinux
    install -Dt "$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}

    echo "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

    echo "Installing KConfig files..."
    find . -name 'Kconfig*' -exec install -Dm644 {} "$builddir/{}" \;

    echo "Removing unneeded architectures..."
    local arch
    for arch in "$builddir"/arch/*/; do
        [[ $arch = */x86/ ]] && continue
        echo "Removing $(basename "$arch")"
        rm -r "$arch"
    done

    echo "Removing documentation..."
    rm -r "$builddir/Documentation"

    echo "Removing broken symlinks..."
    find -L "$builddir" -type l -printf 'Removing %P\n' -delete

    echo "Removing loose objects..."
    find "$builddir" -type f -name '*.o' -printf 'Removing %P\n' -delete

    echo "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)

    echo "Adding symlink..."
    mkdir -p "$pkgdir/usr/src"
    ln -sr "$builddir" "$pkgdir/usr/src/$pkgbase"
}

_package-docs() {
    pkgdesc="Documentation for the $pkgdesc kernel"

    cd $_srcname
    local builddir="$pkgdir/usr/lib/modules/$(<version)/build"

    echo "Installing documentation..."
    local src dst
    while read -rd '' src; do
        dst="${src#Documentation/}"
        dst="$builddir/Documentation/${dst#output/}"
        install -Dm644 "$src" "$dst"
    done < <(find Documentation -name '.*' -prune -o ! -type d -print0)

    echo "Adding symlink..."
    mkdir -p "$pkgdir/usr/share/doc"
    ln -sr "$builddir/Documentation" "$pkgdir/usr/share/doc/$pkgbase"
}

pkgname=("$pkgbase" "$pkgbase-headers" "$pkgbase-docs")
for _p in "${pkgname[@]}"; do
    eval "package_$_p() {
    $(declare -f "_package${_p#$pkgbase}")
    _package${_p#$pkgbase}
  }"
done

# vim:set ts=8 sts=2 sw=2 et: