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+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+inherit eutils
+
+EXTRAVERSION="redcore-lts"
+KV_FULL="${PV}-${EXTRAVERSION}"
+
+DESCRIPTION="Official Redcore Linux LTS Kernel Image"
+HOMEPAGE="https://gitlab.com/redcore/kernel"
+SRC_URI="https://github.com/redcorelinux/kernel/archive/linux-${KV_FULL}.tar.gz"
+
+KEYWORDS="amd64"
+LICENSE="GPL-2"
+SLOT="${PV}"
+IUSE="+cryptsetup +dmraid +dracut +dkms +mdadm"
+
+RESTRICT="binchecks strip mirror"
+DEPEND="
+ app-arch/xz-utils
+ sys-devel/autoconf
+ sys-devel/bc
+ sys-devel/make
+ cryptsetup? ( sys-fs/cryptsetup )
+ dmraid? ( sys-fs/dmraid )
+ dracut? ( sys-kernel/dracut )
+ dkms? ( sys-kernel/dkms ~sys-kernel/linux-headers-lts-${PV} )
+ mdadm? ( sys-fs/mdadm )
+ >=sys-kernel/linux-firmware-20171206"
+RDEPEND="${DEPEND}"
+
+S="$WORKDIR/kernel-linux-${KV_FULL}"
+
+pkg_setup() {
+ export REAL_ARCH="$ARCH"
+ unset ARCH ; unset LDFLAGS #will interfere with Makefile if set
+}
+
+src_prepare() {
+ default
+ emake mrproper
+ sed -ri "s|^(EXTRAVERSION =).*|\1 -${EXTRAVERSION}|" Makefile
+ cp "redcore/config/"${EXTRAVERSION}"-4.9-amd64.config" .config
+}
+
+src_compile() {
+ emake prepare modules_prepare
+ emake bzImage modules
+}
+
+src_install() {
+ dodir boot
+ insinto boot
+ newins .config config-"${KV_FULL}"
+ newins System.map System.map-"${KV_FULL}"
+ newins arch/x86/boot/bzImage vmlinuz-"${KV_FULL}"
+
+ dodir usr/src/linux-"${KV_FULL}"
+ insinto usr/src/linux-"${KV_FULL}"
+ doins Module.symvers
+ doins System.map
+ exeinto usr/src/linux-"${KV_FULL}"
+ doexe vmlinux
+
+ emake INSTALL_MOD_PATH="${D}" modules_install
+
+ rm -f "${D}"lib/modules/"${KV_FULL}"/build
+ rm -f "${D}"lib/modules/"${KV_FULL}"/source
+ export local KSYMS
+ for KSYMS in build source ; do
+ dosym ../../../usr/src/linux-"${KV_FULL}" lib/modules/"${KV_FULL}"/"${KSYMS}"
+ done
+
+ # remove firmware files
+ rm -rf "${D}"lib/firmware
+}
+
+_grub2_update_grubcfg() {
+ if [[ -x $(which grub2-mkconfig) ]]; then
+ elog "Updating GRUB-2 bootloader configuration, please wait"
+ grub2-mkconfig -o "${ROOT}"boot/grub/grub.cfg
+ else
+ elog "It looks like you're not using GRUB-2, you must update bootloader configuration by hand"
+ fi
+}
+
+_dracut_initrd_create() {
+ if [[ -x $(which dracut) ]]; then
+ elog "Generating initrd for "${KV_FULL}", please wait"
+ addpredict /etc/ld.so.cache~
+ dracut -f --no-hostonly-cmdline --kver="${KV_FULL}" "${ROOT}"boot/initrd-"${KV_FULL}"
+ else
+ elog "It looks like you're not using dracut, you must generate an initrd by hand"
+ fi
+}
+
+_dracut_initrd_delete() {
+ rm -rf "${ROOT}"boot/initrd-"${KV_FULL}"
+}
+
+_dkms_modules_delete() {
+ if [[ -x $(which dkms) ]] ; then
+ export local DKMSMOD
+ for DKMSMOD in $(dkms status | cut -d " " -f1,2 | sed -e 's/,//g' | sed -e 's/ /\//g' | sed -e 's/://g') ; do
+ dkms remove "${DKMSMOD}" -k "${KV_FULL}"
+ done
+ fi
+}
+
+pkg_postinst() {
+ if use dracut; then
+ _dracut_initrd_create
+ fi
+ _grub2_update_grubcfg
+}
+
+pkg_postrm() {
+ if use dracut; then
+ _dracut_initrd_delete
+ fi
+ if use dkms; then
+ _dkms_modules_delete
+ fi
+ _grub2_update_grubcfg
+}