sys-apps/corefreq: fix compilation

By adapting ebuild from https://bugs.gentoo.org/828443#c9

Signed-off-by: Vitaly Zdanevich <zdanevich.vitaly@ya.ru>

sys-apps/corefreq/corefreq-1.96.2.ebuild

@@ -3,47 +3,47 @@
 
 EAPI=8
 
-inherit linux-mod
+inherit linux-mod systemd
 
 DESCRIPTION="CPU monitoring software designed for the 64-bits Processors, like top"
 HOMEPAGE="https://www.cyring.fr/"
-SRC_URI="https://github.com/cyring/CoreFreq/archive/refs/tags/${PV}.tar.gz -> ${P}.tar.gz"
+SRC_URI="https://github.com/cyring/$PN/archive/$PV.tar.gz -> $P.tar.gz"
+S="${WORKDIR}/CoreFreq-${PV}"
 
 LICENSE="GPL-2"
 SLOT="0"
 KEYWORDS="-* ~amd64"
 
+IUSE="doc systemd"
+
+DEPEND="sys-devel/make
+	kernel_linux? ( virtual/linux-sources )"
+
 BDEPEND="sys-devel/gcc
-		sys-devel/make
-		dev-vcs/git"
+	sys-devel/make
+	dev-vcs/git"
+
 RDEPEND="sys-libs/glibc"
 
 CONFIG_CHECK="SMP X86_MSR ~HOTPLUG_CPU ~CPU_IDLE ~CPU_FREQ ~PM_SLEEP ~DMI ~XEN ~AMD_NB ~HAVE_PERF_EVENTS ~SCHED_MUQSS ~SCHED_BMQ ~SCHED_PDS"
 
-MODULE_NAMES="corefreqk()"
 BUILD_TARGETS="clean all"
 
+MODULE_NAMES="corefreqk(misc:${S})"
+MODULESD_COREFREQK_ENABLED="yes"
+
 pkg_setup() {
-	if kernel_is -lt 3 3 ; then
-		die "kernels < 3.3 are not supported"
-	fi
-
-	elog "Checking for kernel configurations..."
-	elog "Enable optional configurations only as you see fit."
-	elog "Not all optional configurations will be suitable for your system."
-	elog "Build will fail for required configs."
-	elog "The other configs are all optional configs."
-
-	linux-mod_pkg_setup
-}
-
-src_unpack() {
-	default
-	mv CoreFreq-${PV} ${P}
+		get_version
+		require_configured_kernel
+		BUILD_PARAMS="KERNELDIR=/lib/modules/${KV_FULL}/build"
+		linux-mod_pkg_setup
 }
 
 src_install() {
 	linux-mod_src_install
-	emake -j1 PREFIX="${D}/usr" install
-	newinitd "${FILESDIR}/corefreqd corefreqd"
+	dobin corefreqd corefreq-cli
+	newconfd "${FILESDIR}/${PN}.conf" "${PN}"
+	doinitd "${FILESDIR}/${PN}"
+	use systemd && systemd_dounit ${PN}.service
+	use doc && dodoc README.md
 }

sys-apps/corefreq/files/corefreq

@@ -0,0 +1,6 @@
+#!/sbin/openrc-run
+name=corefreq
+command=/usr/bin/corefreqd
+command_args=${COREFREQD_ARGS}
+command_background=1
+pidfile=/run/corefreqd.pid

sys-apps/corefreq/files/corefreq.conf

@@ -0,0 +1,4 @@
+# Default settings for /etc/init.d/corefreq.
+
+# Options to pass to corefreqd
+COREFREQD_ARGS="-q"