#!/bin/sh

MAKEDEPS="make bc linux-headers cpio toybox kmod pahole"

PKG_VER=6.1.4
#SOURCE=https://cdn.kernel.org/pub/linux/kernel/v${PKG_VER%%.*}.x/linux-$PKG_VER.tar.xz
SOURCE=https://linux-libre.fsfla.org/pub/linux-libre/releases/${PKG_VER}-gnu/linux-libre-${PKG_VER}-gnu.tar.xz
ADDITIONAL="
    config
"
    #https://linux-libre.fsfla.org/pub/linux-libre/releases/$PKG_VER-gnu/deblob-${PKG_VER}

prepare () {
    make mrproper
    apply_patches

    #sh deblob-${PKG_VER} --force

    cp config .config

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

    # toybox's dd does not have this option
    sed -i 's/status=\S*//g' scripts/link-vmlinux.sh
}

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
}