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#!/bin/sh

MAKEDEPS="make bc"
DEPS="sbase kmod"

PKG_VER=5.18.1
SOURCE=https://cdn.kernel.org/pub/linux/kernel/v${PKG_VER%%.*}.x/linux-$PKG_VER.tar.xz
ADDITIONAL="
    fix-sbase-coreutils.patch
    config
    https://linux-libre.fsfla.org/pub/linux-libre/releases/$PKG_VER-gnu/deblob-${PKG_VER%.*}
    https://linux-libre.fsfla.org/pub/linux-libre/releases/$PKG_VER-gnu/deblob-check
"

prepare () {
    sh deblob-${PKG_VER%.*} --force

    apply_patches
    cp config .config

    export GREP="ggrep"

    make olddefconfig
    make -s kernelrelease > version
    echo "Prepared linux version $(cat version)"
}

build () {
    make all 
}

package () {
    local kernver="$(cat version)"
    local modulesdir="$PKG_DEST/usr/lib/modules/$kernver"

    echo "Installing boot image..."
    mkdir -p $PKG_DEST/boot

    cp arch/x86/boot/bzImage $PKG_DEST/boot/vmlinuz-libre-$kernver
    cp System.map $PKG_DEST/boot/System.map-libre-$kernver
    cp .config $PKG_DEST/boot/config-libre-$kernver

    install -d $PKG_DEST/usr/share/doc/linux-libre-$kernver
    cp -r Documentation/* $PKG_DEST/usr/share/doc/linux-libre-$kernver

    install -m755 -d $PKG_DEST/etc/modprobe.d

    echo "Installing modules..."
    make INSTALL_MOD_PATH="$PKG_DEST/usr" INSTALL_MOD_STRIP=1 modules_install
    builddir=$modulesdir/build
    rm $modulesdir/source
    rm $builddir
    mkdir $builddir
    echo "Installing build files..."
    install -D -m644 .config "$builddir" 
    install -D -m644 Makefile "$builddir" 
    install -D -m644 Module.symvers "$builddir" 
    install -D -m644 System.map "$builddir" 
    install -D -m644 version "$builddir" 
    install -D -m644 vmlinux "$builddir" 
    install -D -m644 kernel/Makefile "$builddir/kernel/Makefile" 
    install -D -m644 arch/x86/Makefile "$builddir/arch/x86/Makefile" 
    cp -r scripts "$builddir"

    install -D tools/objtool/objtool "$builddir/tools/objtool"
    install -D tools/bpf/resolve_btfids/resolve_btfids "$builddir/tools/bpf/resolve_btfids" 
    ln -s /usr/src/linux $modulesdir/source
}