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155 lines
3.4 KiB
Bash
155 lines
3.4 KiB
Bash
# Copyright 2024-2025 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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EAPI=8
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LLVM_COMPAT=( {16..20} )
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RUST_MIN_VER="1.82.0"
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inherit eapi9-ver llvm-r2 linux-info cargo rust-toolchain toolchain-funcs meson
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DESCRIPTION="sched_ext schedulers and tools"
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HOMEPAGE="https://github.com/sched-ext/scx"
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SRC_URI="
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https://github.com/sched-ext/scx/archive/refs/tags/v${PV}.tar.gz -> ${P}.tar.gz
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${CARGO_CRATE_URIS}
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"
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if [[ ${PKGBUMPING} != ${PVR} ]]; then
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SRC_URI+="
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https://github.com/gentoo-crate-dist/scx/releases/download/v${PV}/scx-${PV}-crates.tar.xz
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"
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fi
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LICENSE="GPL-2"
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# Dependent crate licenses
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LICENSE+="
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Apache-2.0 BSD-2 BSD CC0-1.0 ISC MIT MPL-2.0 Unicode-3.0 ZLIB
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"
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SLOT="0"
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KEYWORDS="amd64"
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IUSE="systemd"
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DEPEND="
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virtual/libelf:=
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sys-libs/libseccomp
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virtual/zlib:=
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>=dev-libs/libbpf-1.6:=
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"
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RDEPEND="
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${DEPEND}
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"
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BDEPEND="
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app-misc/jq
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dev-libs/protobuf[protoc(+)]
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>=dev-util/bpftool-7.5.0
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$(llvm_gen_dep '
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llvm-core/clang:${LLVM_SLOT}=[llvm_targets_BPF(-)]
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')
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"
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CONFIG_CHECK="
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~BPF
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~BPF_EVENTS
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~BPF_JIT
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~BPF_SYSCALL
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~DEBUG_INFO_BTF
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~FTRACE
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~SCHED_CLASS_EXT
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"
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QA_PREBUILT="
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/usr/bin/scx_loader
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/usr/bin/vmlinux_docify
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/usr/bin/scxctl
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"
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pkg_setup() {
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linux-info_pkg_setup
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llvm-r2_pkg_setup
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rust_pkg_setup
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}
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src_prepare() {
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default
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if tc-is-cross-compiler; then
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# Inject the rust_abi value into install_rust_user_scheds
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sed -i "s;\${MESON_BUILD_ROOT};\${MESON_BUILD_ROOT}/$(rust_abi);" \
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meson-scripts/install_rust_user_scheds || die
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fi
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}
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src_configure() {
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BUILD_DIR="${BUILD_DIR:-${WORKDIR}/${P}-build}"
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local emesonargs=(
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-Dbpf_clang="$(get_llvm_prefix)/bin/clang"
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-Dbpftool=disabled
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-Dlibbpf_a=disabled
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-Dcargo="${EPREFIX}/usr/bin/cargo"
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-Dcargo_home="${ECARGO_HOME}"
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-Doffline=true
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-Denable_rust=true
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-Dopenrc=disabled
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$(meson_feature systemd)
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)
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cargo_env meson_src_configure
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}
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src_compile() {
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cargo_env meson_src_compile
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}
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src_test() {
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cargo_env meson_src_test
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}
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src_install() {
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cargo_env meson_src_install
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dodoc README.md
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local readme readme_name
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for readme in scheds/{rust,c}/*/README.md ./rust/*/README.md; do
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[[ -e ${readme} ]] || continue
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readme_name="${readme#*/rust/}"
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readme_name="${readme_name#*/c/}"
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readme_name="${readme_name%/README.md}"
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newdoc "${readme}" "${readme_name}.md"
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done
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newinitd services/openrc/scx.initrd scx
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insinto /etc/default
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doins services/scx
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dosym ../default/scx /etc/conf.d/scx
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newinitd "${FILESDIR}/scx_loader.initd" scx_loader
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insinto /etc/scx_loader/
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newins services/scx_loader.toml config.toml
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}
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pkg_postinst() {
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if ver_replacing -lt 1.0.16; then
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ewarn "Starting in 1.0.16, the scx service is being replaced with scx_loader."
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ewarn "To transition to the new service, first edit"
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ewarn "${EPREFIX}/etc/scx_loader/config.toml with your preferred"
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ewarn "configuration, then disable the legacy scx service and enable the new"
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ewarn "scx_loader service:"
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ewarn
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ewarn "For openrc users:"
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ewarn " rc-service scx stop"
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ewarn " rc-update del scx default"
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ewarn " rc-service scx_loader start"
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ewarn " rc-update add scx_loader default"
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ewarn
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ewarn "For systemd users:"
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ewarn " systemctl disable --now scx"
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ewarn " systemctl enable --now scx_loader"
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ewarn
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ewarn "For more info, see:"
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ewarn "https://wiki.cachyos.org/configuration/sched-ext/#transitioning-from-scxservice-to-scx_loader-a-comprehensive-guide"
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fi
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}
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