# Maintainer: PktSurf <smlinux@pktsurf.in>
app=linux
version=5.15.193
build=1sml
homepage="https://kernel.org"
download="https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-$VERSION.tar.xz"
desc="Linux kernel for the x86_64 CPU architecture"
requires="musl ncurses perl mpc mpfr"
ignorebinlib=1

prepbuilddir() {
  mkandenterbuilddir
  rm -rf $app-$version

  tar xf $srcdir/$app-$version.tar.?z*
  cd $app-$version
  fixbuilddirpermissions

  export KBUILD_BUILD_VERSION="$build-smlinux"

  # Ensure build directory is clean
  make mrproper
  make clean

  cp $srcdir/linux.config .config
  make olddefconfig

  # Prevent inclusion of incompatible host linux headers in objtool build 
  cp arch/x86/include/uapi/asm/{byteorder.h,swab.h} tools/arch/x86/include/asm/

  ( 
    cd tools/objtool
    mv objtool.c objtool.c.orig
    cp $srcdir/objtool.c .
  
   cat objtool.c.orig >> objtool.c
  )
}
 
build() { 
  make bzImage
  make modules

  make INSTALL_MOD_PATH=$pkg modules_install

  install -Dm 0644 arch/x86/boot/bzImage "$pkg/boot/vmlinuz-$version"
  cp System.map "$pkg/boot/System.map-$version"
  cp .config $pkg/boot/config-$version
  rm -v $pkg/lib/modules/$version/{build,source}

  ( cd $pkg/boot ; ln -s vmlinuz-$version vmlinuz ) 
  ( cd $pkg/boot ; ln -s System.map-$version System.map )
  ( cd $pkg ; find . -name "*.cmd" -exec rm -fv "{}" \+ )
  ( cd $pkg ; mkdir -p usr ; mv lib usr/ )

mkfinalpkg
}

sha512sums="
5728422e0e93c5705c0c661d539a2e0a08e5f86cceb3bd389ae8f05d173f0564367f69010151b3a005804579f6a2f40a2e16e38a7fa113323a90bb337d32c8b2  linux-5.15.193.tar.lz
8a69568f1c690a9038b893f19267551f18b5af502f1e389d950c22792daa594e8606a165117d023584b9d279e917da56563c5c079c683148f54ec6a6b58217a9  objtool.c
"