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# Maintainer: Jerry Xiao <aur@mail.jerryxiao.cc>
# Contributor: Piotr Gorski <lucjan.lucjanov@gmail.com>
# Contributor: Haruue Icymoon <haruue@caoyue.com.cn>

pkgname=linux-usermode-nokmod
_kernelname=-usermodelinux
_major=5.7
_minor=2
pkgver=${_major}.${_minor}
_srcname=linux-${pkgver}
pkgrel=1
pkgdesc="User mode Linux kernel, without modules"
arch=('x86_64')
license=('GPL2')
url="http://user-mode-linux.sourceforge.net/"
depends=('coreutils')
makedepends=('bc' 'inetutils')
source=("https://www.kernel.org/pub/linux/kernel/v5.x/linux-${pkgver}.tar.xz"
        "https://www.kernel.org/pub/linux/kernel/v5.x/linux-${pkgver}.tar.sign"
        'config'
        '70-uml.hook')

sha256sums=('6065ae820e2d52a77a549ef97444c36adf7ab2969b294460256f028b4eed7909'
            'SKIP'
            'bd6a8cbbc6ea207c0dcc979e2bb0cc431ae5c9172c7c8c513e2e49601bfbc5a7'
            '05ea4e00d1e99bf8140a21c94e3c42acf17b9debad9c6f5decbe1dd1fe04332c')

validpgpkeys=(
              'ABAF11C65A2970B130ABE3C479BE3E4300411886' # Linus Torvalds
              '647F28654894E3BD457199BE38DBBDC86092693E' # Greg Kroah-Hartman
             )

prepare() {
  cd ${_srcname}
  
  echo "Setting version..."
  sed -e "/^EXTRAVERSION =/s/=.*/=/" -i Makefile
  scripts/setlocalversion --save-scmversion
  echo "-$pkgrel" > localversion.10-pkgrel
  echo "$_kernelname" > 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
  yes "" | make ARCH=um config >/dev/null

  make ARCH=um kernelrelease > version
  echo "Prepared $pkgname version $(<version)"

  echo "Save configuration for later reuse"
  cat .config > "${startdir}/config.last"
}

build() {
  cd ${_srcname}
  unset LDFLAGS CFLAGS
  make ARCH=um vmlinux
}

package() {
  cd ${_srcname}
  mkdir -p "$pkgdir/usr/bin" "$pkgdir/usr/share/kernel-usermode"
  install -m 644 System.map ${pkgdir}/usr/share/kernel-usermode/System.map
  install -m 755 vmlinux ${pkgdir}/usr/bin/
}