# Maintainer: Yardena Cohen <yardenack at gmail dot com>
# tracks: https://projects.archlinux.org/svntogit/packages.git/log/trunk?h=packages/linux

pkgname=linux-linode
_basekernel=3.17
_kernelname=${pkgname#linux}
_srcname=linux-${_basekernel}
pkgver=${_basekernel}.1
pkgrel=1
arch=('i686' 'x86_64')
url="https://github.com/yardenac/linux-linode"
license=(GPL2)
makedepends=(xmlto docbook-xsl kmod inetutils bc 'gcc>=4.9.0')
options=('!strip')
source=("https://www.kernel.org/pub/linux/kernel/v3.x/${_srcname}.tar.xz"
        "https://www.kernel.org/pub/linux/kernel/v3.x/patch-${pkgver}.xz"
        'config'
        'config.x86_64'
        'menu.lst'
        'preset')
sha512sums=('29c99764e371f7005dbbe2bbe4458b4deeae5297da7e5b719b0f29f6f018629338b608369162ae6bd76bec4d8719cf491257ac57fdd5277cce8941b7f90246a0'
            '16eeb62b894cd0bb9467df93d1c4603efadc402810d14eab005fce7f77d6879d5ce4c3972cfe194693edeec7c771db89eaeb5b56bf306c6ab465a4783f4165da'
            '56fa3467a686309eb41a0132e215cd211a2932ba07fc35d35405f95b93dc147540e5d3b9c4ec5d6e77bba396851c275da68a37c5c8ae973149c5dc16ac623145'
            '62763219bd6e96c50e7099c7ee7f838bb6691614b77e38f9f5a9f2b270648c73627ab24408a65ac7d0755b3da63bb8bb58781d71f4742a78d6075ee1f5d56668'
            '0ddff435474213f6c6e62576b6b3042aeffd1df84c47ca6195714a92c2655c33c56ce211c14934f4268afdf246077e1ea04e0958efc263c71aabfb497481022c'
            'a0a78831075336edef0a8faa34fa550986c3c4d89a89f4f39d798da0211129dc90257d162bec2cdefabef2eb5886a710e70c72074b2f3016788861d05d1e2a1f')
pkgdesc="Kernel for Linode servers"
depends=('coreutils' 'linux-firmware' 'kmod' 'mkinitcpio>=0.7')
provides=(linux)
conflicts=(grub grub-legacy)
backup=(etc/mkinitcpio.d/${pkgname}.preset boot/grub/menu.lst)
install=install

prepare() {
  cd "${srcdir}/${_srcname}"
  patch -p1 -i "${srcdir}/patch-${pkgver}"
  if [ "${CARCH}" = "x86_64" ]; then
    cat "${srcdir}/config.x86_64" > ./.config
  else
    cat "${srcdir}/config" > ./.config
  fi
  sed -i '2iexit 0' scripts/depmod.sh
  sed -i "s|CONFIG_LOCALVERSION=.*|CONFIG_LOCALVERSION=\"${_kernelname}\"|g" ./.config
  sed -i "s|CONFIG_LOCALVERSION_AUTO=.*|CONFIG_LOCALVERSION_AUTO=n|g" ./.config
  sed -ri "s|^(EXTRAVERSION =).*|\1 -${pkgrel}|" Makefile
  make prepare
}

build() {
  cd "${srcdir}/${_srcname}"
  CFLAGS=${CFLAGS}" -march=corei7 -mtune=corei7 -mcpu=corei7 "
  CXXFLAGS=${CXXFLAGS}" -march=corei7 -mtune=corei7 -mcpu=corei7 "
  [[ "$MAKEFLAGS" =~ -j[0-9]* ]] || MAKEFLAGS+=" -j$(nproc)"
  ionice -c 3 nice -n 16 make ${MAKEFLAGS} LOCALVERSION= bzImage modules
}

package_linux-linode() {
  KARCH=x86
  cd "${srcdir}/${_srcname}"
  _kernver="$(make LOCALVERSION= kernelrelease)"
  mkdir -p "${pkgdir}"/{lib/{modules,firmware},boot}
  make LOCALVERSION= INSTALL_MOD_PATH="${pkgdir}" modules_install
  rm -rf "${pkgdir}"/lib/{firmware,modules/${_kernver}/{source,build}}
  cp arch/$KARCH/boot/bzImage "${pkgdir}/boot/vmlinuz-${pkgname}"
  install -D -m644 vmlinux "${pkgdir}/lib/modules/${_kernver}/build/vmlinux"
  install -D -m644 "${srcdir}/preset" "${pkgdir}/etc/mkinitcpio.d/${pkgname}.preset"
  sed \
    -e  "s/KERNEL_NAME=.*/KERNEL_NAME=${_kernelname}/" \
    -i "${startdir}/install"
  sed \
    -e "s|ALL_kver=.*|ALL_kver=\"/boot/vmlinuz-${pkgname}\"|" \
    -e "s|default_image=.*|default_image=\"/boot/initramfs-${pkgname}.img\"|" \
    -e "s|fallback_image=.*|fallback_image=\"/boot/initramfs-${pkgname}-fallback.img\"|" \
    -i "${pkgdir}/etc/mkinitcpio.d/${pkgname}.preset"
  find "${pkgdir}" -name '*.ko' -exec gzip -9 {} \;

  emdir="extramodules-${_basekernel}${_kernelname:--ARCH}"
  mkdir -p "${pkgdir}/lib/modules/${emdir}"
  ln -s "../${emdir}" "${pkgdir}/lib/modules/${_kernver}/extramodules"
  echo "${_kernver}" >| "${pkgdir}/lib/modules/${emdir}/version"
  depmod -b "${pkgdir}" -F System.map "${_kernver}"
  mkdir -p "${pkgdir}/usr"
  mv "${pkgdir}/"{lib,usr/}

  mkdir -p ${pkgdir}/boot/grub
  sed "s/%VER%/${pkgver}-${pkgrel}/ig" ${srcdir}/menu.lst > ${pkgdir}/boot/grub/menu.lst
}