pkgname=libkrunfw
_kver=6.12.68
pkgver=5.2.1
pkgrel=1
pkgdesc="A dynamic library bundling the guest payload consumed by libkrun (with 32-bit support)"
url="https://github.com/containers/libkrunfw"
arch=('x86_64')
license=('GPL-2.0-only' 'LGPL-2.1-only')
depends=('glibc')
makedepends=('bc' 'python-pyelftools' 'cpio')
source=("https://github.com/containers/libkrunfw/archive/refs/tags/v$pkgver/$pkgname-$pkgver.tar.gz"
        "https://cdn.kernel.org/pub/linux/kernel/v${_kver%%.*}.x/linux-${_kver}.tar.xz")
noextract=("linux-${_kver}.tar.xz")
options=(!debug)
sha256sums=('c7eebd7149b15e4d74d2dff9acd3137dc13eedf604adf1df2efa52d9f36fe0bb'
            'd367c7504bd4da520dd01eb08125d2d0ac088bc8af4cd56d236f2074dd4225b7')

build() {
  cd "$pkgname-$pkgver"

  mkdir -p tarballs
  cp -s "$srcdir/linux-${_kver}.tar.xz" tarballs/

  _config="config-libkrunfw_x86_64"

  # Enable IA32 (32-bit) emulation support
  sed -i 's/# CONFIG_IA32_EMULATION is not set/CONFIG_IA32_EMULATION=y/' "$_config"

  # Enable modify_ldt syscall (needed by many 32-bit apps including Steam)
  sed -i 's/# CONFIG_MODIFY_LDT_SYSCALL is not set/CONFIG_MODIFY_LDT_SYSCALL=y/' "$_config"

  # Enable 32-bit time compatibility
  sed -i 's/# CONFIG_COMPAT_32BIT_TIME is not set/CONFIG_COMPAT_32BIT_TIME=y/' "$_config"

  # Enable x32 ABI
  sed -i 's/# CONFIG_X86_X32_ABI is not set/CONFIG_X86_X32_ABI=y/' "$_config"

  # Increase max CPU count (default 16 is low for gaming)
  sed -i 's/CONFIG_NR_CPUS=16/CONFIG_NR_CPUS=128/' "$_config"

  make
}

package() {
  cd "$pkgname-$pkgver"

  make DESTDIR="$pkgdir" PREFIX=/usr LIBDIR_Linux=lib install

  install -Dm644 LICENSE-GPL-2.0-only "$pkgdir"/usr/share/licenses/$pkgname/LICENSE-GPL-2.0-only
  install -Dm644 LICENSE-LGPL-2.1-only "$pkgdir"/usr/share/licenses/$pkgname/LICENSE-LGPL-2.1-only
}