project-lakitu/sys-kernel/dump-capture-kernel/dump-capture-kernel-5.10.ebuild

# Copyright 2020 The Chromium OS Authors. All rights reserved.
# Distributed under the terms of the GNU General Public License v2

EAPI=6

CROS_WORKON_MANUAL_UPREV="1"
CROS_WORKON_COMMIT="6cb4ec9321cece8e53bcc46c2e18340da7f0d72f"
CROS_WORKON_TREE="511c9657681a9bf604d7aedc26ccf85c43da6ac0"
CROS_WORKON_REPO="https://cos.googlesource.com"
CROS_WORKON_PROJECT="third_party/kernel"
CROS_WORKON_LOCALNAME="kernel/v5.10"

# This must be inherited *after* EGIT/CROS_WORKON variables defined
inherit cros-workon cros-kernel2

DESCRIPTION="A dump capture kernel for kdump functionality"
HOMEPAGE="https://cloud.google.com/container-optimized-os"
KEYWORDS="*"
CHROMEOS_KERNEL_CONFIG="${FILESDIR}/${CHROMEOS_KERNEL_CONFIG_FILE}"

STRIP_MASK+=" /usr/src/${P}/build/vmlinux"
STRIP_MASK+=" *.ko"

DEPEND="
	!sys-kernel/lakitu-kernel
"
RDEPEND="${DEPEND}"

src_prepare() {
	default
	cros-kernel2_src_prepare
}

# Use stripped-down version of cros-kernel2 configure routine
# to avoid dragging in all fragments enabled by USE flags
src_configure() {
	local build_cfg="$(get_build_cfg)"
	local old_defconfig="$(cros-workon_get_build_dir)/cros-old-defconfig"

	elog "Using kernel config: ${CHROMEOS_KERNEL_CONFIG}"

	cp -f "${CHROMEOS_KERNEL_CONFIG}" "${build_cfg}" || die
	kmake olddefconfig

	cp -a "${build_cfg}" "${old_defconfig}" || die
}

src_install() {
	dodir /boot/kdump
	kmake INSTALL_PATH="${D}/boot/kdump" INSTALL_MOD_PATH="${D}" \
		INSTALL_MOD_STRIP=1 install
	local version
	version=$(kmake -s --no-print-directory kernelrelease)
	ln -sf "vmlinuz-${version}" "${D}/boot/kdump/vmlinuz" || die

	# We also strips the symbol table /boot/kdump/System.map-* at:
	# overlay-lakitu/scripts/board_specific_setup.sh
}