# Copyright 1999-2017 Dustin C. Hatch
# Distributed under the terms of the GNU General Public License v2

# @ECLASS: dchkernel.eclass
# @MAINTAINER:
# Dustin C. Hatch <dustin@hatch.name>
# @AUTHOR:
# Dustin C. Hatch <dustin@hatch.name>
# @BLURB: Build dustin's kernels

inherit multilib

DEPEND="=sys-kernel/gentoo-sources-${PVR}"

EXPORT_FUNCTIONS src_unpack src_configure src_install


KSRC_DIR=/usr/src/linux-${PV}-gentoo
if [ ${PR} != r0 ]; then
	KSRC_DIR=${KSRC_DIR}-${PR}
fi

# @FUNCTION: dchkernel-src_unpack
# @USAGE:
# @DESCRIPTION:
# Creates ${S}
dchkernel_src_unpack() {
	mkdir -p "${S}" || die
}

# @FUNCTION: dchkernel-src_configure
# @USAGE:
# @DESCRIPTION:
# Copies the kernel configuration from ${FILESDIR} and runs make oldconfig
dchkernel_src_configure() {
	cp "${FILESDIR}"/${P}.kconfig .config || die
	unset ARCH
	make -C "${KSRC_DIR}" O="${S}" oldnoconfig || die
	make include/config/kernel.release || die
	export KERNELRELEASE=$(cat include/config/kernel.release)
}

# @FUNCTION: dchkernel-src_install
# @USAGE:
# @DESCRIPTION:
# Installs the kernel image, configuration file, and System.map into
# /usr/${libdir}/kernels/${PF}
dchkernel_src_install() {
	local installpath="/usr/$(get_libdir)"/kernels/"${PN}"
	dodir "${installpath}"
	make install INSTALL_PATH="${D%/}${installpath}" || die
	if in_iuse modules && use modules; then
		make modules_install INSTALL_MOD_PATH="${D%/}" || die
	fi
}